tbye - plan9port - [fork] Plan 9 from user space
 (HTM) git clone git://src.adamsgaard.dk/plan9port
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       ---
 (DIR) commit 74dc60da74c62e07f0d63179da9724d705794a6d
 (DIR) parent 324891a5579d6f504201a6107369c64dab245a98
 (HTM) Author: rsc <devnull@localhost>
       Date:   Sun, 25 Jun 2006 18:59:29 +0000
       
       bye
       
       Diffstat:
         M src/libdraw/alloc.c                 |       2 +-
         M src/libdraw/event.c                 |      18 +-----------------
         M src/libdraw/init.c                  |     196 +++++++++++++++++++++++++++----
         M src/libdraw/keyboard.c              |      73 +++++--------------------------
         D src/libdraw/md-alloc.c              |     204 -------------------------------
         D src/libdraw/md-arc.c                |     116 ------------------------------
         D src/libdraw/md-arctest.c            |      61 -------------------------------
         D src/libdraw/md-cload.c              |      68 -------------------------------
         D src/libdraw/md-cmap.c               |     320 -------------------------------
         D src/libdraw/md-cread.c              |      96 -------------------------------
         D src/libdraw/md-defont.c             |      68 -------------------------------
         D src/libdraw/md-draw.c               |    2489 -------------------------------
         D src/libdraw/md-drawtest.c           |    1004 -------------------------------
         D src/libdraw/md-ellipse.c            |     247 -------------------------------
         D src/libdraw/md-fillpoly.c           |     524 -------------------------------
         D src/libdraw/md-hwdraw.c             |      12 ------------
         D src/libdraw/md-iprint.c             |      12 ------------
         D src/libdraw/md-line.c               |     486 -------------------------------
         D src/libdraw/md-load.c               |      72 -------------------------------
         D src/libdraw/md-mkcmap.c             |      79 -------------------------------
         D src/libdraw/md-openmemsubfont.c     |      53 ------------------------------
         D src/libdraw/md-poly.c               |      23 -----------------------
         D src/libdraw/md-read.c               |     111 ------------------------------
         D src/libdraw/md-string.c             |      66 -------------------------------
         D src/libdraw/md-subfont.c            |      34 -------------------------------
         D src/libdraw/md-unload.c             |      25 -------------------------
         D src/libdraw/md-write.c              |     183 -------------------------------
         M src/libdraw/mkfile                  |      74 ++++---------------------------
         D src/libdraw/ml-draw.c               |     192 -------------------------------
         D src/libdraw/ml-lalloc.c             |      79 -------------------------------
         D src/libdraw/ml-layerop.c            |     112 -------------------------------
         D src/libdraw/ml-ldelete.c            |      67 -------------------------------
         D src/libdraw/ml-lhide.c              |      67 -------------------------------
         D src/libdraw/ml-line.c               |     122 -------------------------------
         D src/libdraw/ml-load.c               |      55 -------------------------------
         D src/libdraw/ml-lorigin.c            |     107 -------------------------------
         D src/libdraw/ml-lsetrefresh.c        |      35 -------------------------------
         D src/libdraw/ml-ltofront.c           |      80 -------------------------------
         D src/libdraw/ml-ltorear.c            |      69 ------------------------------
         D src/libdraw/ml-unload.c             |      52 -------------------------------
         M src/libdraw/mouse.c                 |     107 ++++++++-----------------------
         D src/libdraw/nowsys-alloc.c          |      17 -----------------
         D src/libdraw/nowsys-cload.c          |      11 -----------
         D src/libdraw/nowsys-draw.c           |      15 ---------------
         D src/libdraw/nowsys-event.c          |      83 -------------------------------
         D src/libdraw/nowsys-fill.c           |      11 -----------
         D src/libdraw/nowsys-get.c            |       3 ---
         D src/libdraw/nowsys-init.c           |      47 -------------------------------
         D src/libdraw/nowsys-itrans.c         |      23 -----------------------
         D src/libdraw/nowsys-keyboard.c       |      28 ----------------------------
         D src/libdraw/nowsys-keysym2ucs.c     |       2 --
         D src/libdraw/nowsys-load.c           |      11 -----------
         D src/libdraw/nowsys-mouse.c          |      61 -------------------------------
         D src/libdraw/nowsys-pixelbits.c      |      12 ------------
         D src/libdraw/nowsys-unload.c         |      11 -----------
         D src/libdraw/nowsys-wsys.c           |      22 ----------------------
         M src/libdraw/unloadimage.c           |       2 +-
         D src/libdraw/x11-alloc.c             |     122 -------------------------------
         D src/libdraw/x11-cload.c             |      18 ------------------
         D src/libdraw/x11-draw.c              |     144 -------------------------------
         D src/libdraw/x11-event.c             |     187 -------------------------------
         D src/libdraw/x11-fill.c              |      56 -------------------------------
         D src/libdraw/x11-get.c               |     112 -------------------------------
         D src/libdraw/x11-inc.h               |      31 -------------------------------
         D src/libdraw/x11-init.c              |     940 -------------------------------
         D src/libdraw/x11-itrans.c            |     675 -------------------------------
         D src/libdraw/x11-keyboard.c          |      78 -------------------------------
         D src/libdraw/x11-keysym2ucs.c        |     857 -------------------------------
         D src/libdraw/x11-keysym2ucs.h        |       9 ---------
         D src/libdraw/x11-load.c              |      18 ------------------
         D src/libdraw/x11-memdraw.h           |     108 -------------------------------
         D src/libdraw/x11-mouse.c             |     221 -------------------------------
         D src/libdraw/x11-pixelbits.c         |      16 ----------------
         D src/libdraw/x11-unload.c            |      15 ---------------
         D src/libdraw/x11-wsys.c              |      41 -------------------------------
       
       75 files changed, 226 insertions(+), 11641 deletions(-)
       ---
 (DIR) diff --git a/src/libdraw/alloc.c b/src/libdraw/alloc.c
       t@@ -132,7 +132,7 @@ namedimage(Display *d, char *name)
                a[6+n] = 'I';
                if(flushimage(d, 0) < 0)
                        goto Error;
       -        if(_drawmsgread(d, buf, sizeof buf) < 12*12)
       +        if(_displayrddraw(d, buf, sizeof buf) < 12*12)
                        goto Error;
                buf[12*12] = '\0';
        
 (DIR) diff --git a/src/libdraw/event.c b/src/libdraw/event.c
       t@@ -1,28 +1,12 @@
        #include <u.h>
       +#include <sys/select.h>
        #include <libc.h>
        #include <draw.h>
        #include <cursor.h>
        #include <event.h>
        
       -typedef struct        Slave Slave;
       -typedef struct        Ebuf Ebuf;
        
       -struct Slave
       -{
       -        int        pid;
       -        Ebuf        *head;                /* ueue of messages for this descriptor */
       -        Ebuf        *tail;
       -        int        (*fn)(int, Event*, uchar*, int);
       -};
       -
       -struct Ebuf
       -{
       -        Ebuf        *next;
       -        int        n;                /* number of bytes in buf */
       -        uchar        buf[EMAXMSG];
       -};
        
       -static        Slave        eslave[MAXSLAVE];
        static        int        Skeyboard = -1;
        static        int        Smouse = -1;
        static        int        Stimer = -1;
 (DIR) diff --git a/src/libdraw/init.c b/src/libdraw/init.c
       t@@ -11,6 +11,7 @@ static char deffontname[] = "*default*";
        Screen        *_screen;
        
        int                debuglockdisplay = 1;
       +char        *winsize;
        
        /*
        static void
       t@@ -27,19 +28,17 @@ drawshutdown(void)
        */
        
        int
       -initdraw(void (*error)(Display*, char*), char *fontname, char *label)
       +geninitdraw(char *devdir, void(*error)(Display*, char*), char *fontname, char *label, char *windir, int ref)
        {
                Subfont *df;
                char buf[128];
        
       -        rfork(RFNOTEG);        /* x11-event.c will postnote hangup */
       -        display = _initdisplay(error, label); /* sets screen too */
       +        if(label == nil)
       +                label = argv0;
       +        display = _initdisplay(error, label);
                if(display == nil)
                        return -1;
        
       -        lockdisplay(display);
       -        display->screenimage = display->image;
       -
                /*
                 * Set up default font
                 */
       t@@ -53,7 +52,7 @@ initdraw(void (*error)(Display*, char*), char *fontname, char *label)
                        return -1;
                }
                if(fontname == nil)
       -                fontname = getenv("font");        /* leak */
       +                fontname = getenv("font");
        
                /*
                 * Build fonts with caches==depth of screen, for speed.
       t@@ -62,32 +61,28 @@ initdraw(void (*error)(Display*, char*), char *fontname, char *label)
                if(fontname == nil){
                        snprint(buf, sizeof buf, "%d %d\n0 %d\t%s\n", df->height, df->ascent,
                                df->n-1, deffontname);
       -/*BUG: Need something better for this        installsubfont("*default*", df); */
       +//BUG: Need something better for this        installsubfont("*default*", df);
                        font = buildfont(display, buf, deffontname);
                        if(font == nil){
       -                        fprint(2, "initdraw: can't open default font: %r\n");
       +                        fprint(2, "imageinit: can't open default font: %r\n");
                                goto Error;
                        }
                }else{
                        font = openfont(display, fontname);        /* BUG: grey fonts */
                        if(font == nil){
       -                        fprint(2, "initdraw: can't open font %s: %r\n", fontname);
       +                        fprint(2, "imageinit: can't open font %s: %r\n", fontname);
                                goto Error;
                        }
                }
                display->defaultfont = font;
        
       -        display->white = allocimage(display, Rect(0,0,1,1), GREY1, 1, DWhite);
       -        display->black = allocimage(display, Rect(0,0,1,1), GREY1, 1, DBlack);
       -        if(display->white == nil || display->black == nil){
       -                fprint(2, "initdraw: can't allocate white and black");
       -                goto Error;
       -        }
       -        display->opaque = display->white;
       -        display->transparent = display->black;
       -
                _screen = allocscreen(display->image, display->white, 0);
       +        display->screenimage = display->image;        /* _allocwindow wants screenimage->chan */
                screen = _allocwindow(nil, _screen, display->image->r, Refnone, DWhite);
       +        if(screen == nil){
       +                fprint(2, "_allocwindow: %r\n");
       +                goto Error;
       +        }
                display->screenimage = screen;
                draw(screen, screen->r, display->white, nil, ZP);
                flushimage(display, 1);
       t@@ -102,6 +97,165 @@ initdraw(void (*error)(Display*, char*), char *fontname, char *label)
                return 1;
        }
        
       +int
       +initdraw(void (*error)(Display*, char*), char *fontname, char *label)
       +{
       +        return geninitdraw("/dev", error, fontname, label, "/dev", Refnone);
       +}
       +
       +extern int _freeimage1(Image*);
       +
       +static Image*
       +getimage0(Display *d, Image *image)
       +{
       +        char info[12*12+1];
       +        uchar *a;
       +        int n;
       +
       +        /*
       +         * If there's an old screen, it has id 0.  The 'J' request below
       +         * will try to install the new screen as id 0, so the old one 
       +         * must be freed first.
       +         */
       +        if(image){
       +                _freeimage1(image);
       +                memset(image, 0, sizeof(Image));
       +        }
       +
       +        a = bufimage(d, 2);
       +        a[0] = 'J';
       +        a[1] = 'I';
       +        if(flushimage(d, 0) < 0){
       +                fprint(2, "cannot read screen info: %r\n");
       +                return nil;
       +        }
       +
       +        n = _displayrddraw(d, info, sizeof info);
       +        if(n != 12*12){
       +                fprint(2, "short screen info\n");
       +                return nil;
       +        }
       +
       +        if(image == nil){
       +                image = mallocz(sizeof(Image), 1);
       +                if(image == nil){
       +                        fprint(2, "cannot allocate image: %r\n");
       +                        return nil;
       +                }
       +        }
       +
       +        image->display = d;
       +        image->id = 0;
       +        image->chan = strtochan(info+2*12);
       +        image->depth = chantodepth(image->chan);
       +        image->repl = atoi(info+3*12);
       +        image->r.min.x = atoi(info+4*12);
       +        image->r.min.y = atoi(info+5*12);
       +        image->r.max.x = atoi(info+6*12);
       +        image->r.max.y = atoi(info+7*12);
       +        image->clipr.min.x = atoi(info+8*12);
       +        image->clipr.min.y = atoi(info+9*12);
       +        image->clipr.max.x = atoi(info+10*12);
       +        image->clipr.max.y = atoi(info+11*12);
       +        return image;
       +}
       +
       +/*
       + * Attach, or possibly reattach, to window.
       + * If reattaching, maintain value of screen pointer.
       + */
       +int
       +getwindow(Display *d, int ref)
       +{
       +        Image *i, *oi;
       +        
       +        /* XXX check for destroyed? */
       +        
       +        /*
       +         * Libdraw promises not to change the value of "screen",
       +         * so we have to reuse the image structure
       +         * memory we already have.
       +         */
       +        oi = d->image;
       +        i = getimage0(d, oi);
       +        if(i == nil)
       +                sysfatal("getwindow failed");
       +        d->image = i;
       +        /* fprint(2, "getwindow %p -> %p\n", oi, i); */
       +
       +        freescreen(_screen);
       +        _screen = allocscreen(i, d->white, 0);
       +        _freeimage1(screen);
       +        screen = _allocwindow(screen, _screen, i->r, ref, DWhite);
       +        d->screenimage = screen;
       +        return 0;
       +}
       +
       +Display*
       +_initdisplay(void (*error)(Display*, char*), char *label)
       +{
       +        Display *disp;
       +        Image *image;
       +
       +        fmtinstall('P', Pfmt);
       +        fmtinstall('R', Rfmt);
       +
       +        disp = mallocz(sizeof(Display), 1);
       +        if(disp == nil){
       +    Error1:
       +                return nil;
       +        }
       +        disp->srvfd = -1;
       +        image = nil;
       +        if(0){
       +    Error2:
       +                free(image);
       +                free(disp);
       +                goto Error1;
       +        }
       +        disp->bufsize = 65500;
       +        disp->buf = malloc(disp->bufsize+5);        /* +5 for flush message */
       +        disp->bufp = disp->buf;
       +        disp->error = error;
       +        qlock(&disp->qlock);
       +
       +        if(disp->buf == nil)
       +                goto Error2;
       +        if(0){
       +    Error3:
       +                free(disp->buf);
       +                goto Error2;
       +        }
       +        
       +        if(_displaymux(disp) < 0
       +        || _displayconnect(disp) < 0
       +        || _displayinit(disp, label, winsize) < 0)
       +                goto Error3;
       +        if(0){
       +    Error4:
       +                close(disp->srvfd);
       +                goto Error3;
       +        }
       +
       +        image = getimage0(disp, nil);
       +        if(image == nil)
       +                goto Error4;
       +        
       +        disp->image = image;
       +        disp->white = allocimage(disp, Rect(0, 0, 1, 1), GREY1, 1, DWhite);
       +        disp->black = allocimage(disp, Rect(0, 0, 1, 1), GREY1, 1, DBlack);
       +        if(disp->white == nil || disp->black == nil){
       +                free(disp->white);
       +                free(disp->black);
       +                goto Error4;
       +        }
       +        
       +        disp->opaque = disp->white;
       +        disp->transparent = disp->black;
       +
       +        return disp;
       +}
       +
        /*
         * Call with d unlocked.
         * Note that disp->defaultfont and defaultsubfont are not freed here.
       t@@ -131,6 +285,8 @@ closedisplay(Display *disp)
                        freeimage(disp->white);
                if(disp->black)
                        freeimage(disp->black);
       +        if(disp->srvfd >= 0)
       +                close(disp->srvfd);
                free(disp);
        }
        
       t@@ -177,7 +333,7 @@ doflush(Display *d)
                if(n <= 0)
                        return 1;
        
       -        if(_drawmsgwrite(d, d->buf, n) != n){
       +        if(_displaywrdraw(d, d->buf, n) != n){
                        if(_drawdebug)
                                fprint(2, "flushimage fail: d=%p: %r\n", d); /**/
                        d->bufp = d->buf;        /* might as well; chance of continuing */
 (DIR) diff --git a/src/libdraw/keyboard.c b/src/libdraw/keyboard.c
       t@@ -4,25 +4,18 @@
        #include <thread.h>
        #include <keyboard.h>
        
       -
        void
        closekeyboard(Keyboardctl *kc)
        {
       +        Rune r;
       +
                if(kc == nil)
                        return;
        
       -        postnote(PNPROC, kc->pid, "kill");
       +/*        postnote(PNPROC, kc->pid, "kill"); */
        
       -#ifdef BUG
       -        /* Drain the channel */
       -        while(?kc->c)
       -                <-kc->c;
       -#endif
       -
       -        close(kc->ctlfd);
       -        close(kc->consfd);
       -        free(kc->file);
       -        free(kc->c);
       +        do; while(nbrecv(kc->c, &r) > 0);
       +        chanfree(kc->c);
                free(kc);
        }
        
       t@@ -30,29 +23,15 @@ static
        void
        _ioproc(void *arg)
        {
       -        int m, n;
       -        char buf[20];
                Rune r;
                Keyboardctl *kc;
       -
       +        
                kc = arg;
                threadsetname("kbdproc");
       -        kc->pid = getpid();
       -        n = 0;
                for(;;){
       -                while(n>0 && fullrune(buf, n)){
       -                        m = chartorune(&r, buf);
       -                        n -= m;
       -                        memmove(buf, buf+m, n);
       -                        send(kc->c, &r);
       -                }
       -                m = read(kc->consfd, buf+n, sizeof buf-n);
       -                if(m <= 0){
       -                        yield();        /* if error is due to exiting, we'll exit here */
       -                        fprint(2, "keyboard read error: %r\n");
       -                        threadexits("error");
       -                }
       -                n += m;
       +                if(_displayrdkbd(display, &r) < 0)
       +                        threadexits("read error");
       +                send(kc->c, &r);
                }
        }
        
       t@@ -60,44 +39,14 @@ Keyboardctl*
        initkeyboard(char *file)
        {
                Keyboardctl *kc;
       -        char *t;
        
                kc = mallocz(sizeof(Keyboardctl), 1);
                if(kc == nil)
                        return nil;
       -        if(file == nil)
       -                file = "/dev/cons";
       -        kc->file = strdup(file);
       -        kc->consfd = open(file, ORDWR|OCEXEC);
       -        t = malloc(strlen(file)+16);
       -        if(kc->consfd<0 || t==nil){
       -Error1:
       -                free(kc);
       -                return nil;
       -        }
       -        sprint(t, "%sctl", file);
       -        kc->ctlfd = open(t, OWRITE|OCEXEC);
       -        if(kc->ctlfd < 0){
       -                fprint(2, "initkeyboard: can't open %s: %r\n", t);
       -Error2:
       -                close(kc->consfd);
       -                free(t);
       -                goto Error1;
       -        }
       -        if(ctlkeyboard(kc, "rawon") < 0){
       -                fprint(2, "initkeyboard: can't turn on raw mode on %s: %r\n", t);
       -                close(kc->ctlfd);
       -                goto Error2;
       -        }
       -        free(t);
       +        USED(file);
                kc->c = chancreate(sizeof(Rune), 20);
                chansetname(kc->c, "kbdc");
       -        proccreate(_ioproc, kc, 4096);
       +        proccreate(_ioproc, kc, 32*1024);
                return kc;
        }
        
       -int
       -ctlkeyboard(Keyboardctl *kc, char *m)
       -{
       -        return write(kc->ctlfd, m, strlen(m));
       -}
 (DIR) diff --git a/src/libdraw/md-alloc.c b/src/libdraw/md-alloc.c
       t@@ -1,204 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -
       -#define poolalloc(a, b) malloc(b)
       -#define poolfree(a, b) free(b)
       -
       -void
       -memimagemove(void *from, void *to)
       -{
       -        Memdata *md;
       -
       -        md = *(Memdata**)to;
       -        if(md->base != from){
       -                print("compacted data not right: #%p\n", md->base);
       -                abort();
       -        }
       -        md->base = to;
       -
       -        /* if allocmemimage changes this must change too */
       -        md->bdata = (uchar*)md->base+sizeof(Memdata*)+sizeof(ulong);
       -}
       -
       -Memimage*
       -allocmemimaged(Rectangle r, u32int chan, Memdata *md, void *X)
       -{
       -        int d;
       -        u32int l;
       -        Memimage *i;
       -
       -        if(Dx(r) <= 0 || Dy(r) <= 0){
       -                werrstr("bad rectangle %R", r);
       -                return nil;
       -        }
       -        if((d = chantodepth(chan)) == 0) {
       -                werrstr("bad channel descriptor %.8lux", chan);
       -                return nil;
       -        }
       -
       -        l = wordsperline(r, d);
       -
       -        i = mallocz(sizeof(Memimage), 1);
       -        if(i == nil)
       -                return nil;
       -
       -        i->X = X;
       -        i->data = md;
       -        i->zero = sizeof(u32int)*l*r.min.y;
       -        
       -        if(r.min.x >= 0)
       -                i->zero += (r.min.x*d)/8;
       -        else
       -                i->zero -= (-r.min.x*d+7)/8;
       -        i->zero = -i->zero;
       -        i->width = l;
       -        i->r = r;
       -        i->clipr = r;
       -        i->flags = 0;
       -        i->layer = nil;
       -        i->cmap = memdefcmap;
       -        if(memsetchan(i, chan) < 0){
       -                free(i);
       -                return nil;
       -        }
       -        return i;
       -}
       -
       -Memimage*
       -_allocmemimage(Rectangle r, u32int chan)
       -{
       -        int d;
       -        u32int l, nw;
       -        uchar *p;
       -        Memdata *md;
       -        Memimage *i;
       -
       -        if((d = chantodepth(chan)) == 0) {
       -                werrstr("bad channel descriptor %.8lux", chan);
       -                return nil;
       -        }
       -
       -        l = wordsperline(r, d);
       -        nw = l*Dy(r);
       -        md = malloc(sizeof(Memdata));
       -        if(md == nil)
       -                return nil;
       -
       -        md->ref = 1;
       -        md->base = poolalloc(imagmem, sizeof(Memdata*)+(1+nw)*sizeof(ulong));
       -        if(md->base == nil){
       -                free(md);
       -                return nil;
       -        }
       -
       -        p = (uchar*)md->base;
       -        *(Memdata**)p = md;
       -        p += sizeof(Memdata*);
       -
       -        *(ulong*)p = getcallerpc(&r);
       -        p += sizeof(ulong);
       -
       -        /* if this changes, memimagemove must change too */
       -        md->bdata = p;
       -        md->allocd = 1;
       -
       -        i = allocmemimaged(r, chan, md, nil);
       -        if(i == nil){
       -                poolfree(imagmem, md->base);
       -                free(md);
       -                return nil;
       -        }
       -        md->imref = i;
       -        return i;
       -}
       -
       -void
       -_freememimage(Memimage *i)
       -{
       -        if(i == nil)
       -                return;
       -        if(i->data->ref-- == 1 && i->data->allocd){
       -                if(i->data->base)
       -                        poolfree(imagmem, i->data->base);
       -                free(i->data);
       -        }
       -        free(i);
       -}
       -
       -/*
       - * Wordaddr is deprecated.
       - */
       -u32int*
       -wordaddr(Memimage *i, Point p)
       -{
       -        return (u32int*) ((ulong)byteaddr(i, p) & ~(sizeof(u32int)-1));
       -}
       -
       -uchar*
       -byteaddr(Memimage *i, Point p)
       -{
       -        uchar *a;
       -
       -        a = i->data->bdata+i->zero+sizeof(u32int)*p.y*i->width;
       -
       -        if(i->depth < 8){
       -                /*
       -                 * We need to always round down,
       -                 * but C rounds toward zero.
       -                 */
       -                int np;
       -                np = 8/i->depth;
       -                if(p.x < 0)
       -                        return a+(p.x-np+1)/np;
       -                else
       -                        return a+p.x/np;
       -        }
       -        else
       -                return a+p.x*(i->depth/8);
       -}
       -
       -int
       -memsetchan(Memimage *i, u32int chan)
       -{
       -        int d;
       -        int t, j, k;
       -        u32int cc;
       -        int bytes;
       -
       -        if((d = chantodepth(chan)) == 0) {
       -                werrstr("bad channel descriptor");
       -                return -1;
       -        }
       -
       -        i->depth = d;
       -        i->chan = chan;
       -        i->flags &= ~(Fgrey|Falpha|Fcmap|Fbytes);
       -        bytes = 1;
       -        for(cc=chan, j=0, k=0; cc; j+=NBITS(cc), cc>>=8, k++){
       -                t=TYPE(cc);
       -                if(t < 0 || t >= NChan){
       -                        werrstr("bad channel string");
       -                        return -1;
       -                }
       -                if(t == CGrey)
       -                        i->flags |= Fgrey;
       -                if(t == CAlpha)
       -                        i->flags |= Falpha;
       -                if(t == CMap && i->cmap == nil){
       -                        i->cmap = memdefcmap;
       -                        i->flags |= Fcmap;
       -                }
       -
       -                i->shift[t] = j;
       -                i->mask[t] = (1<<NBITS(cc))-1;
       -                i->nbits[t] = NBITS(cc);
       -                if(NBITS(cc) != 8)
       -                        bytes = 0;
       -        }
       -        i->nchan = k;
       -        if(bytes)
       -                i->flags |= Fbytes;
       -        return 0;
       -}
 (DIR) diff --git a/src/libdraw/md-arc.c b/src/libdraw/md-arc.c
       t@@ -1,116 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -
       -/*
       - * elarc(dst,c,a,b,t,src,sp,alpha,phi)
       - *   draws the part of an ellipse between rays at angles alpha and alpha+phi
       - *   measured counterclockwise from the positive x axis. other
       - *   arguments are as for ellipse(dst,c,a,b,t,src,sp)
       - */
       -
       -enum
       -{
       -        R, T, L, B        /* right, top, left, bottom */
       -};
       -
       -static
       -Point corners[] = {
       -        {1,1},
       -        {-1,1},
       -        {-1,-1},
       -        {1,-1}
       -};
       -
       -static
       -Point p00;
       -
       -/*
       - * make a "wedge" mask covering the desired angle and contained in
       - * a surrounding square; draw a full ellipse; intersect that with the
       - * wedge to make a mask through which to copy src to dst.
       - */
       -void
       -memarc(Memimage *dst, Point c, int a, int b, int t, Memimage *src, Point sp, int alpha, int phi, int op)
       -{
       -        int i, w, beta, tmp, c1, c2, m, m1;
       -        Rectangle rect;
       -        Point p,        bnd[8];
       -        Memimage *wedge, *figure, *mask;
       -
       -        if(a < 0)
       -                a = -a;
       -        if(b < 0)
       -                b = -b;
       -        w = t;
       -        if(w < 0)
       -                w = 0;
       -        alpha = -alpha;                /* compensate for upside-down coords */
       -        phi = -phi;
       -        beta = alpha + phi;
       -        if(phi < 0){
       -                tmp = alpha;
       -                alpha = beta;
       -                beta = tmp;
       -                phi = -phi;
       -        }
       -        if(phi >= 360){
       -                memellipse(dst, c, a, b, t, src, sp, op);
       -                return;
       -        }
       -        while(alpha < 0)
       -                alpha += 360;
       -        while(beta < 0)
       -                beta += 360;
       -        c1 = alpha/90 & 3;        /* number of nearest corner */
       -        c2 = beta/90 & 3;
       -                /*
       -                 * icossin returns point at radius ICOSSCALE.
       -                 * multiplying by m1 moves it outside the ellipse
       -                */
       -        rect = Rect(-a-w, -b-w, a+w+1, b+w+1);
       -        m = rect.max.x;        /* inradius of bounding square */
       -        if(m < rect.max.y)
       -                m = rect.max.y;
       -        m1 = (m+ICOSSCALE-1) >> 10;
       -        m = m1 << 10;                /* assure m1*cossin is inside */
       -        i = 0;
       -        bnd[i++] = Pt(0,0);
       -        icossin(alpha, &p.x, &p.y);
       -        bnd[i++] = mulpt(p, m1);
       -        for(;;) {
       -                bnd[i++] = mulpt(corners[c1], m);
       -                if(c1==c2 && phi<180)
       -                        break;
       -                c1 = (c1+1) & 3;
       -                phi -= 90;
       -        }
       -        icossin(beta, &p.x, &p.y);
       -        bnd[i++] = mulpt(p, m1);
       -
       -        figure = nil;
       -        mask = nil;
       -        wedge = allocmemimage(rect, GREY1);
       -        if(wedge == nil)
       -                goto Return;
       -        memfillcolor(wedge, DTransparent);
       -        memfillpoly(wedge, bnd, i, ~0, memopaque, p00, S);
       -        figure = allocmemimage(rect, GREY1);
       -        if(figure == nil)
       -                goto Return;
       -        memfillcolor(figure, DTransparent);
       -        memellipse(figure, p00, a, b, t, memopaque, p00, S);
       -        mask = allocmemimage(rect, GREY1);
       -        if(mask == nil)
       -                goto Return;
       -        memfillcolor(mask, DTransparent);
       -        memimagedraw(mask, rect, figure, rect.min, wedge, rect.min, S);
       -        c = subpt(c, dst->r.min);
       -        memdraw(dst, dst->r, src, subpt(sp, c), mask, subpt(p00, c), op);
       -
       -    Return:
       -        freememimage(wedge);
       -        freememimage(figure);
       -        freememimage(mask);
       -}
 (DIR) diff --git a/src/libdraw/md-arctest.c b/src/libdraw/md-arctest.c
       t@@ -1,61 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -
       -extern int drawdebug;
       -void
       -main(int argc, char **argv)
       -{
       -        char cc;
       -        Memimage *x;
       -        Point c = {208,871};
       -        int a = 441;
       -        int b = 441;
       -        int thick = 0;
       -        Point sp = {0,0};
       -        int alpha = 51;
       -        int phi = 3;
       -        vlong t0, t1;
       -        int i, n;
       -        vlong del;
       -
       -        memimageinit();
       -
       -        x = allocmemimage(Rect(0,0,1000,1000), CMAP8);
       -        n = atoi(argv[1]);
       -
       -        t0 = nsec();
       -        t0 = nsec();
       -        t0 = nsec();
       -        t1 = nsec();
       -        del = t1-t0;
       -        t0 = nsec();
       -        for(i=0; i<n; i++)
       -                memarc(x, c, a, b, thick, memblack, sp, alpha, phi, SoverD);
       -        t1 = nsec();
       -        print("%lld %lld\n", t1-t0-del, del);
       -}
       -
       -int drawdebug = 0;
       -
       -void
       -rdb(void)
       -{
       -}
       -
       -int
       -iprint(char *fmt, ...)
       -{
       -        int n;        
       -        va_list va;
       -        char buf[1024];
       -
       -        va_start(va, fmt);
       -        n = doprint(buf, buf+sizeof buf, fmt, va) - buf;
       -        va_end(va);
       -
       -        write(1,buf,n);
       -        return 1;
       -}
       -
 (DIR) diff --git a/src/libdraw/md-cload.c b/src/libdraw/md-cload.c
       t@@ -1,68 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -
       -int
       -_cloadmemimage(Memimage *i, Rectangle r, uchar *data, int ndata)
       -{
       -        int y, bpl, c, cnt, offs;
       -        uchar mem[NMEM], *memp, *omemp, *emem, *linep, *elinep, *u, *eu;
       -
       -        if(!rectinrect(r, i->r))
       -                return -1;
       -        bpl = bytesperline(r, i->depth);
       -        u = data;
       -        eu = data+ndata;
       -        memp = mem;
       -        emem = mem+NMEM;
       -        y = r.min.y;
       -        linep = byteaddr(i, Pt(r.min.x, y));
       -        elinep = linep+bpl;
       -        for(;;){
       -                if(linep == elinep){
       -                        if(++y == r.max.y)
       -                                break;
       -                        linep = byteaddr(i, Pt(r.min.x, y));
       -                        elinep = linep+bpl;
       -                }
       -                if(u == eu){        /* buffer too small */
       -                        return -1;
       -                }
       -                c = *u++;
       -                if(c >= 128){
       -                        for(cnt=c-128+1; cnt!=0 ;--cnt){
       -                                if(u == eu){                /* buffer too small */
       -                                        return -1;
       -                                }
       -                                if(linep == elinep){        /* phase error */
       -                                        return -1;
       -                                }
       -                                *linep++ = *u;
       -                                *memp++ = *u++;
       -                                if(memp == emem)
       -                                        memp = mem;
       -                        }
       -                }
       -                else{
       -                        if(u == eu)        /* short buffer */
       -                                return -1;
       -                        offs = *u++ + ((c&3)<<8)+1;
       -                        if(memp-mem < offs)
       -                                omemp = memp+(NMEM-offs);
       -                        else
       -                                omemp = memp-offs;
       -                        for(cnt=(c>>2)+NMATCH; cnt!=0; --cnt){
       -                                if(linep == elinep)        /* phase error */
       -                                        return -1;
       -                                *linep++ = *omemp;
       -                                *memp++ = *omemp++;
       -                                if(omemp == emem)
       -                                        omemp = mem;
       -                                if(memp == emem)
       -                                        memp = mem;
       -                        }
       -                }
       -        }
       -        return u-data;
       -}
 (DIR) diff --git a/src/libdraw/md-cmap.c b/src/libdraw/md-cmap.c
       t@@ -1,320 +0,0 @@
       -/*
       - * generated by mkcmap.c
       - */
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -
       -static Memcmap def = {
       -/* cmap2rgb */ {
       -        0x00,0x00,0x00,0x00,0x00,0x44,0x00,0x00,0x88,0x00,0x00,0xcc,0x00,0x44,0x00,0x00,
       -        0x44,0x44,0x00,0x44,0x88,0x00,0x44,0xcc,0x00,0x88,0x00,0x00,0x88,0x44,0x00,0x88,
       -        0x88,0x00,0x88,0xcc,0x00,0xcc,0x00,0x00,0xcc,0x44,0x00,0xcc,0x88,0x00,0xcc,0xcc,
       -        0x00,0xdd,0xdd,0x11,0x11,0x11,0x00,0x00,0x55,0x00,0x00,0x99,0x00,0x00,0xdd,0x00,
       -        0x55,0x00,0x00,0x55,0x55,0x00,0x4c,0x99,0x00,0x49,0xdd,0x00,0x99,0x00,0x00,0x99,
       -        0x4c,0x00,0x99,0x99,0x00,0x93,0xdd,0x00,0xdd,0x00,0x00,0xdd,0x49,0x00,0xdd,0x93,
       -        0x00,0xee,0x9e,0x00,0xee,0xee,0x22,0x22,0x22,0x00,0x00,0x66,0x00,0x00,0xaa,0x00,
       -        0x00,0xee,0x00,0x66,0x00,0x00,0x66,0x66,0x00,0x55,0xaa,0x00,0x4f,0xee,0x00,0xaa,
       -        0x00,0x00,0xaa,0x55,0x00,0xaa,0xaa,0x00,0x9e,0xee,0x00,0xee,0x00,0x00,0xee,0x4f,
       -        0x00,0xff,0x55,0x00,0xff,0xaa,0x00,0xff,0xff,0x33,0x33,0x33,0x00,0x00,0x77,0x00,
       -        0x00,0xbb,0x00,0x00,0xff,0x00,0x77,0x00,0x00,0x77,0x77,0x00,0x5d,0xbb,0x00,0x55,
       -        0xff,0x00,0xbb,0x00,0x00,0xbb,0x5d,0x00,0xbb,0xbb,0x00,0xaa,0xff,0x00,0xff,0x00,
       -        0x44,0x00,0x44,0x44,0x00,0x88,0x44,0x00,0xcc,0x44,0x44,0x00,0x44,0x44,0x44,0x44,
       -        0x44,0x88,0x44,0x44,0xcc,0x44,0x88,0x00,0x44,0x88,0x44,0x44,0x88,0x88,0x44,0x88,
       -        0xcc,0x44,0xcc,0x00,0x44,0xcc,0x44,0x44,0xcc,0x88,0x44,0xcc,0xcc,0x44,0x00,0x00,
       -        0x55,0x00,0x00,0x55,0x00,0x55,0x4c,0x00,0x99,0x49,0x00,0xdd,0x55,0x55,0x00,0x55,
       -        0x55,0x55,0x4c,0x4c,0x99,0x49,0x49,0xdd,0x4c,0x99,0x00,0x4c,0x99,0x4c,0x4c,0x99,
       -        0x99,0x49,0x93,0xdd,0x49,0xdd,0x00,0x49,0xdd,0x49,0x49,0xdd,0x93,0x49,0xdd,0xdd,
       -        0x4f,0xee,0xee,0x66,0x00,0x00,0x66,0x00,0x66,0x55,0x00,0xaa,0x4f,0x00,0xee,0x66,
       -        0x66,0x00,0x66,0x66,0x66,0x55,0x55,0xaa,0x4f,0x4f,0xee,0x55,0xaa,0x00,0x55,0xaa,
       -        0x55,0x55,0xaa,0xaa,0x4f,0x9e,0xee,0x4f,0xee,0x00,0x4f,0xee,0x4f,0x4f,0xee,0x9e,
       -        0x55,0xff,0xaa,0x55,0xff,0xff,0x77,0x00,0x00,0x77,0x00,0x77,0x5d,0x00,0xbb,0x55,
       -        0x00,0xff,0x77,0x77,0x00,0x77,0x77,0x77,0x5d,0x5d,0xbb,0x55,0x55,0xff,0x5d,0xbb,
       -        0x00,0x5d,0xbb,0x5d,0x5d,0xbb,0xbb,0x55,0xaa,0xff,0x55,0xff,0x00,0x55,0xff,0x55,
       -        0x88,0x00,0x88,0x88,0x00,0xcc,0x88,0x44,0x00,0x88,0x44,0x44,0x88,0x44,0x88,0x88,
       -        0x44,0xcc,0x88,0x88,0x00,0x88,0x88,0x44,0x88,0x88,0x88,0x88,0x88,0xcc,0x88,0xcc,
       -        0x00,0x88,0xcc,0x44,0x88,0xcc,0x88,0x88,0xcc,0xcc,0x88,0x00,0x00,0x88,0x00,0x44,
       -        0x99,0x00,0x4c,0x99,0x00,0x99,0x93,0x00,0xdd,0x99,0x4c,0x00,0x99,0x4c,0x4c,0x99,
       -        0x4c,0x99,0x93,0x49,0xdd,0x99,0x99,0x00,0x99,0x99,0x4c,0x99,0x99,0x99,0x93,0x93,
       -        0xdd,0x93,0xdd,0x00,0x93,0xdd,0x49,0x93,0xdd,0x93,0x93,0xdd,0xdd,0x99,0x00,0x00,
       -        0xaa,0x00,0x00,0xaa,0x00,0x55,0xaa,0x00,0xaa,0x9e,0x00,0xee,0xaa,0x55,0x00,0xaa,
       -        0x55,0x55,0xaa,0x55,0xaa,0x9e,0x4f,0xee,0xaa,0xaa,0x00,0xaa,0xaa,0x55,0xaa,0xaa,
       -        0xaa,0x9e,0x9e,0xee,0x9e,0xee,0x00,0x9e,0xee,0x4f,0x9e,0xee,0x9e,0x9e,0xee,0xee,
       -        0xaa,0xff,0xff,0xbb,0x00,0x00,0xbb,0x00,0x5d,0xbb,0x00,0xbb,0xaa,0x00,0xff,0xbb,
       -        0x5d,0x00,0xbb,0x5d,0x5d,0xbb,0x5d,0xbb,0xaa,0x55,0xff,0xbb,0xbb,0x00,0xbb,0xbb,
       -        0x5d,0xbb,0xbb,0xbb,0xaa,0xaa,0xff,0xaa,0xff,0x00,0xaa,0xff,0x55,0xaa,0xff,0xaa,
       -        0xcc,0x00,0xcc,0xcc,0x44,0x00,0xcc,0x44,0x44,0xcc,0x44,0x88,0xcc,0x44,0xcc,0xcc,
       -        0x88,0x00,0xcc,0x88,0x44,0xcc,0x88,0x88,0xcc,0x88,0xcc,0xcc,0xcc,0x00,0xcc,0xcc,
       -        0x44,0xcc,0xcc,0x88,0xcc,0xcc,0xcc,0xcc,0x00,0x00,0xcc,0x00,0x44,0xcc,0x00,0x88,
       -        0xdd,0x00,0x93,0xdd,0x00,0xdd,0xdd,0x49,0x00,0xdd,0x49,0x49,0xdd,0x49,0x93,0xdd,
       -        0x49,0xdd,0xdd,0x93,0x00,0xdd,0x93,0x49,0xdd,0x93,0x93,0xdd,0x93,0xdd,0xdd,0xdd,
       -        0x00,0xdd,0xdd,0x49,0xdd,0xdd,0x93,0xdd,0xdd,0xdd,0xdd,0x00,0x00,0xdd,0x00,0x49,
       -        0xee,0x00,0x4f,0xee,0x00,0x9e,0xee,0x00,0xee,0xee,0x4f,0x00,0xee,0x4f,0x4f,0xee,
       -        0x4f,0x9e,0xee,0x4f,0xee,0xee,0x9e,0x00,0xee,0x9e,0x4f,0xee,0x9e,0x9e,0xee,0x9e,
       -        0xee,0xee,0xee,0x00,0xee,0xee,0x4f,0xee,0xee,0x9e,0xee,0xee,0xee,0xee,0x00,0x00,
       -        0xff,0x00,0x00,0xff,0x00,0x55,0xff,0x00,0xaa,0xff,0x00,0xff,0xff,0x55,0x00,0xff,
       -        0x55,0x55,0xff,0x55,0xaa,0xff,0x55,0xff,0xff,0xaa,0x00,0xff,0xaa,0x55,0xff,0xaa,
       -        0xaa,0xff,0xaa,0xff,0xff,0xff,0x00,0xff,0xff,0x55,0xff,0xff,0xaa,0xff,0xff,0xff,
       -},
       -/* rgb2cmap */ {
       -        0x00,0x00,0x11,0x01,0x01,0x12,0x23,0x34,0x02,0x13,0x24,0x35,0x03,0x14,0x25,0x36,
       -        0x00,0x11,0x11,0x01,0x01,0x12,0x23,0x34,0x02,0x13,0x24,0x35,0x03,0x14,0x25,0x36,
       -        0x11,0x11,0x11,0x01,0x01,0x12,0x23,0x34,0x02,0x13,0x24,0x35,0x03,0x14,0x25,0x36,
       -        0x04,0x04,0x04,0x05,0x05,0x05,0x05,0x06,0x06,0x06,0x17,0x07,0x07,0x18,0x18,0x29,
       -        0x04,0x04,0x04,0x05,0x05,0x05,0x16,0x06,0x06,0x17,0x28,0x07,0x07,0x18,0x29,0x3a,
       -        0x15,0x15,0x15,0x05,0x05,0x16,0x16,0x06,0x06,0x17,0x28,0x39,0x07,0x18,0x29,0x3a,
       -        0x26,0x26,0x26,0x05,0x16,0x16,0x27,0x27,0x38,0x28,0x28,0x39,0x39,0x29,0x29,0x3a,
       -        0x37,0x37,0x37,0x09,0x09,0x09,0x27,0x38,0x0a,0x0a,0x39,0x0b,0x0b,0x0b,0x1c,0x3a,
       -        0x08,0x08,0x08,0x09,0x09,0x09,0x38,0x0a,0x0a,0x0a,0x1b,0x0b,0x0b,0x1c,0x1c,0x2d,
       -        0x19,0x19,0x19,0x09,0x1a,0x1a,0x2b,0x0a,0x0a,0x1b,0x1b,0x0b,0x0b,0x1c,0x2d,0x3e,
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       -        0x82,0x82,0x82,0x83,0x83,0x83,0x66,0x84,0x84,0x84,0x67,0x85,0x85,0x85,0x96,0x79,
       -        0x65,0x65,0x65,0x83,0x83,0x66,0x66,0x66,0x84,0x84,0x78,0x78,0x85,0x85,0x96,0x79,
       -        0x65,0x65,0x65,0x83,0x66,0x66,0x66,0x77,0x77,0x77,0x78,0x78,0x78,0x96,0x79,0x79,
       -        0x76,0x76,0x76,0x87,0x87,0x66,0x77,0x77,0x77,0x88,0x78,0x89,0x89,0x89,0x89,0x79,
       -        0x76,0x76,0x76,0x87,0x87,0x87,0x77,0x77,0x88,0x88,0x88,0x89,0x89,0x89,0x9a,0x9a,
       -        0x86,0x86,0x86,0x87,0x87,0x87,0x77,0x88,0x88,0x88,0x6b,0x89,0x89,0x9a,0x9a,0x7d,
       -        0x7a,0x7a,0x7a,0x87,0x6a,0x7b,0x7b,0x7b,0x88,0x6b,0x6b,0x7c,0x7c,0x9a,0x7d,0x7d,
       -        0x8a,0x8a,0x8a,0x8b,0x8b,0x7b,0x7b,0x8c,0x8c,0x8c,0x7c,0x7c,0x8d,0x8d,0x7d,0x7d,
       -        0x8a,0x8a,0x8a,0x8b,0x8b,0x8b,0x7b,0x8c,0x8c,0x8c,0x7c,0x8d,0x8d,0x8d,0x9e,0x9e,
       -        0x8a,0x8a,0x8a,0x8b,0x8b,0x8b,0x9c,0x8c,0x8c,0x9d,0x9d,0x8d,0x8d,0x9e,0x9e,0x9e,
       -        0x9b,0x9b,0x9b,0x9c,0x9c,0x9c,0x7f,0x8c,0x9d,0x9d,0x70,0x70,0x9e,0x9e,0x9e,0x71,
       -        0x7e,0x7e,0x7e,0x7f,0x7f,0x7f,0x7f,0x7f,0x9d,0x70,0x70,0x70,0x9e,0x9e,0x71,0x71,
       -        0x8e,0x8e,0x8e,0x8f,0x8f,0x8f,0x73,0x73,0x80,0x80,0x91,0x81,0x81,0x92,0x92,0xa3,
       -        0x8e,0x8e,0x8e,0x8f,0x8f,0x8f,0x73,0x73,0x80,0x80,0x91,0x81,0x81,0x92,0x92,0xa3,
       -        0x82,0x82,0x82,0x83,0x83,0x83,0x73,0x73,0x80,0x80,0x91,0x81,0x81,0x92,0x92,0xa3,
       -        0x82,0x82,0x82,0x83,0x83,0x83,0x83,0x84,0x84,0x84,0x95,0x85,0x85,0x85,0x96,0xa7,
       -        0x82,0x82,0x82,0x83,0x83,0x83,0x94,0x84,0x84,0x84,0x95,0x85,0x85,0x96,0x96,0xa7,
       -        0x82,0x82,0x82,0x83,0x83,0x94,0x94,0x84,0x84,0x95,0x95,0x85,0x85,0x96,0xa7,0xa7,
       -        0x76,0x76,0x76,0x83,0x94,0x94,0x77,0x77,0x77,0x95,0x95,0x85,0x85,0x96,0xa7,0xa7,
       -        0x76,0x76,0x76,0x87,0x87,0x87,0x77,0x77,0x88,0x88,0x88,0x89,0x89,0x89,0x9a,0x9a,
       -        0x86,0x86,0x86,0x87,0x87,0x87,0x77,0x88,0x88,0x88,0x99,0x89,0x89,0x9a,0x9a,0xab,
       -        0x86,0x86,0x86,0x87,0x87,0x98,0x98,0x88,0x88,0x99,0x99,0x89,0x89,0x9a,0x9a,0xab,
       -        0x97,0x97,0x97,0x98,0x98,0x98,0x98,0x88,0x99,0x99,0x99,0x89,0x9a,0x9a,0xab,0xab,
       -        0x8a,0x8a,0x8a,0x8b,0x8b,0x8b,0x8b,0x8c,0x8c,0x8c,0x8c,0x8d,0x8d,0x8d,0xab,0xbc,
       -        0x8a,0x8a,0x8a,0x8b,0x8b,0x8b,0x8b,0x8c,0x8c,0x8c,0x9d,0x8d,0x8d,0x8d,0x9e,0x9e,
       -        0x9b,0x9b,0x9b,0x8b,0x9c,0x9c,0x9c,0x8c,0x9d,0x9d,0x9d,0x8d,0x8d,0x9e,0x9e,0xaf,
       -        0x9b,0x9b,0x9b,0x9c,0x9c,0xad,0xad,0x9d,0x9d,0x9d,0xae,0xae,0x9e,0x9e,0xaf,0xaf,
       -        0xac,0xac,0xac,0xad,0xad,0xad,0xad,0x9d,0xae,0xae,0xae,0xbf,0x9e,0xaf,0xaf,0xaf,
       -        0x9f,0x9f,0x9f,0x8f,0x90,0x90,0xa1,0x80,0x80,0x91,0x91,0x81,0x81,0x92,0xa3,0xb4,
       -        0x9f,0x9f,0x9f,0x8f,0x90,0x90,0xa1,0x80,0x80,0x91,0x91,0x81,0x81,0x92,0xa3,0xb4,
       -        0x9f,0x9f,0x9f,0x83,0x90,0x90,0xa1,0x80,0x80,0x91,0x91,0x81,0x81,0x92,0xa3,0xb4,
       -        0x82,0x82,0x82,0x83,0x83,0x94,0x94,0x84,0x84,0x95,0x95,0x85,0x85,0x96,0x96,0xa7,
       -        0x93,0x93,0x93,0x83,0x94,0x94,0x94,0x84,0x84,0x95,0x95,0x85,0x85,0x96,0xa7,0xa7,
       -        0x93,0x93,0x93,0x94,0x94,0x94,0xa5,0x84,0x95,0x95,0xa6,0xa6,0x96,0x96,0xa7,0xb8,
       -        0xa4,0xa4,0xa4,0x94,0x94,0xa5,0xa5,0x77,0x95,0x95,0xa6,0xa6,0x96,0xa7,0xa7,0xb8,
       -        0x86,0x86,0x86,0x87,0x87,0x87,0x77,0x88,0x88,0x88,0x99,0x89,0x89,0x9a,0x9a,0xb8,
       -        0x86,0x86,0x86,0x87,0x87,0x98,0x98,0x88,0x88,0x99,0x99,0x89,0x89,0x9a,0x9a,0xab,
       -        0x97,0x97,0x97,0x98,0x98,0x98,0x98,0x88,0x99,0x99,0x99,0x89,0x9a,0x9a,0xab,0xab,
       -        0x97,0x97,0x97,0x98,0x98,0xa9,0xa9,0x99,0x99,0x99,0xaa,0xaa,0x9a,0xab,0xab,0xbc,
       -        0x8a,0x8a,0x8a,0x8b,0x8b,0xa9,0xa9,0x8c,0x8c,0x8c,0xaa,0x8d,0x8d,0x8d,0xab,0xbc,
       -        0x8a,0x8a,0x8a,0x8b,0x8b,0x9c,0x9c,0x8c,0x8c,0x9d,0x9d,0x8d,0x8d,0x9e,0x9e,0xbc,
       -        0x9b,0x9b,0x9b,0x9c,0x9c,0x9c,0xad,0x9d,0x9d,0x9d,0xae,0x8d,0x9e,0x9e,0xaf,0xaf,
       -        0xac,0xac,0xac,0x9c,0xad,0xad,0xad,0x9d,0x9d,0xae,0xae,0xae,0x9e,0xaf,0xaf,0xaf,
       -        0xbd,0xbd,0xbd,0xad,0xad,0xbe,0xbe,0xbe,0xae,0xae,0xbf,0xbf,0xbf,0xaf,0xaf,0xb0,
       -        0xa0,0xa0,0xa0,0x90,0xa1,0xa1,0xa1,0xb2,0x91,0x91,0xa2,0xa2,0xb3,0xa3,0xa3,0xb4,
       -        0xa0,0xa0,0xa0,0x90,0xa1,0xa1,0xa1,0xb2,0x91,0x91,0xa2,0xa2,0xb3,0xa3,0xa3,0xb4,
       -        0xa0,0xa0,0xa0,0x90,0xa1,0xa1,0xa1,0xb2,0x91,0x91,0xa2,0xa2,0xb3,0xa3,0xa3,0xb4,
       -        0x93,0x93,0x93,0x94,0x94,0x94,0xa5,0x84,0x95,0x95,0xa6,0xa6,0x96,0x96,0xa7,0xb8,
       -        0xa4,0xa4,0xa4,0x94,0x94,0xa5,0xa5,0x84,0x95,0x95,0xa6,0xa6,0x96,0x96,0xa7,0xb8,
       -        0xa4,0xa4,0xa4,0x94,0xa5,0xa5,0xa5,0xb6,0x95,0xa6,0xa6,0xa6,0xb7,0xa7,0xa7,0xb8,
       -        0xa4,0xa4,0xa4,0xa5,0xa5,0xa5,0xb6,0xb6,0x95,0xa6,0xa6,0xb7,0xb7,0xa7,0xb8,0xb8,
       -        0xb5,0xb5,0xb5,0x87,0x87,0xb6,0xb6,0xb6,0x88,0x99,0xa6,0xb7,0xb7,0x9a,0xb8,0xb8,
       -        0x97,0x97,0x97,0x98,0x98,0x98,0x98,0x88,0x99,0x99,0x99,0x89,0x9a,0x9a,0xab,0xab,
       -        0x97,0x97,0x97,0x98,0x98,0xa9,0xa9,0x99,0x99,0x99,0xaa,0xaa,0x9a,0xab,0xab,0xbc,
       -        0xa8,0xa8,0xa8,0xa9,0xa9,0xa9,0xa9,0xa9,0x99,0xaa,0xaa,0xaa,0xbb,0xab,0xab,0xbc,
       -        0xa8,0xa8,0xa8,0xa9,0xa9,0xa9,0xba,0xba,0x8c,0xaa,0xaa,0xbb,0xbb,0xab,0xbc,0xbc,
       -        0xb9,0xb9,0xb9,0x9c,0x9c,0xba,0xba,0xba,0x9d,0x9d,0xbb,0xbb,0xbb,0x9e,0x9e,0xbc,
       -        0xac,0xac,0xac,0x9c,0x9c,0xad,0xad,0x9d,0x9d,0xae,0xae,0xae,0x9e,0x9e,0xaf,0xaf,
       -        0xac,0xac,0xac,0xad,0xad,0xad,0xbe,0xbe,0xae,0xae,0xae,0xbf,0x9e,0xaf,0xaf,0xb0,
       -        0xbd,0xbd,0xbd,0xbe,0xbe,0xbe,0xbe,0xbe,0xae,0xbf,0xbf,0xbf,0xbf,0xaf,0xb0,0xb0,
       -        0xb1,0xb1,0xb1,0xce,0xce,0xb2,0xb2,0xcf,0xcf,0xa2,0xa2,0xb3,0xb3,0xc0,0xb4,0xb4,
       -        0xb1,0xb1,0xb1,0xce,0xce,0xb2,0xb2,0xcf,0xcf,0xa2,0xa2,0xb3,0xb3,0xc0,0xb4,0xb4,
       -        0xb1,0xb1,0xb1,0xc2,0xc2,0xb2,0xb2,0xc3,0xc3,0xa2,0xa2,0xb3,0xb3,0xc0,0xb4,0xb4,
       -        0xc1,0xc1,0xc1,0xc2,0xc2,0xc2,0xa5,0xc3,0xc3,0xc3,0xa6,0xc4,0xc4,0xc4,0xa7,0xb8,
       -        0xc1,0xc1,0xc1,0xc2,0xc2,0xa5,0xb6,0xc3,0xc3,0xc3,0xa6,0xc4,0xc4,0xc4,0xb8,0xb8,
       -        0xb5,0xb5,0xb5,0xc2,0xa5,0xb6,0xb6,0xb6,0xc3,0xa6,0xa6,0xb7,0xb7,0xc4,0xb8,0xb8,
       -        0xb5,0xb5,0xb5,0xa5,0xb6,0xb6,0xb6,0xb6,0xc3,0xa6,0xb7,0xb7,0xb7,0xb7,0xb8,0xb8,
       -        0xc5,0xc5,0xc5,0xc6,0xc6,0xb6,0xb6,0xc7,0xc7,0xc7,0xb7,0xb7,0xc8,0xc8,0xb8,0xb8,
       -        0xc5,0xc5,0xc5,0xc6,0xc6,0xc6,0xc6,0xc7,0xc7,0xc7,0xaa,0xc8,0xc8,0xc8,0xab,0xbc,
       -        0xa8,0xa8,0xa8,0xc6,0xc6,0xa9,0xa9,0xc7,0xc7,0xaa,0xaa,0xaa,0xc8,0xc8,0xab,0xbc,
       -        0xa8,0xa8,0xa8,0xa9,0xa9,0xa9,0xba,0xba,0xaa,0xaa,0xaa,0xbb,0xbb,0xab,0xbc,0xbc,
       -        0xb9,0xb9,0xb9,0xca,0xca,0xba,0xba,0xba,0xcb,0xaa,0xbb,0xbb,0xbb,0xcc,0xbc,0xbc,
       -        0xb9,0xb9,0xb9,0xca,0xca,0xba,0xba,0xcb,0xcb,0xcb,0xbb,0xbb,0xcc,0xcc,0xcc,0xbc,
       -        0xc9,0xc9,0xc9,0xca,0xca,0xca,0xba,0xcb,0xcb,0xcb,0xae,0xcc,0xcc,0xcc,0xaf,0xaf,
       -        0xbd,0xbd,0xbd,0xad,0xbe,0xbe,0xbe,0xbe,0xae,0xae,0xbf,0xbf,0xcc,0xaf,0xaf,0xb0,
       -        0xbd,0xbd,0xbd,0xbe,0xbe,0xbe,0xbe,0xbe,0xbf,0xbf,0xbf,0xbf,0xbf,0xaf,0xb0,0xb0,
       -        0xcd,0xcd,0xcd,0xce,0xce,0xce,0xb2,0xcf,0xcf,0xcf,0xb3,0xb3,0xc0,0xc0,0xd1,0xb4,
       -        0xcd,0xcd,0xcd,0xce,0xce,0xce,0xb2,0xcf,0xcf,0xcf,0xb3,0xb3,0xc0,0xc0,0xd1,0xb4,
       -        0xc1,0xc1,0xc1,0xc2,0xc2,0xc2,0xb2,0xc3,0xc3,0xc3,0xb3,0xb3,0xc0,0xc0,0xd1,0xb4,
       -        0xc1,0xc1,0xc1,0xc2,0xc2,0xc2,0xc2,0xc3,0xc3,0xc3,0xd4,0xc4,0xc4,0xc4,0xd5,0xd5,
       -        0xc1,0xc1,0xc1,0xc2,0xc2,0xc2,0xb6,0xc3,0xc3,0xc3,0xd4,0xc4,0xc4,0xc4,0xd5,0xb8,
       -        0xc1,0xc1,0xc1,0xc2,0xc2,0xb6,0xb6,0xc3,0xc3,0xd4,0xb7,0xb7,0xc4,0xd5,0xd5,0xb8,
       -        0xb5,0xb5,0xb5,0xc2,0xb6,0xb6,0xb6,0xb6,0xc3,0xd4,0xb7,0xb7,0xb7,0xd5,0xd5,0xb8,
       -        0xc5,0xc5,0xc5,0xc6,0xc6,0xc6,0xb6,0xc7,0xc7,0xc7,0xb7,0xc8,0xc8,0xc8,0xd9,0xd9,
       -        0xc5,0xc5,0xc5,0xc6,0xc6,0xc6,0xc6,0xc7,0xc7,0xc7,0xd8,0xc8,0xc8,0xc8,0xd9,0xd9,
       -        0xc5,0xc5,0xc5,0xc6,0xc6,0xd7,0xd7,0xc7,0xc7,0xd8,0xd8,0xc8,0xc8,0xd9,0xd9,0xbc,
       -        0xb9,0xb9,0xb9,0xd7,0xd7,0xba,0xba,0xba,0xd8,0xd8,0xbb,0xbb,0xbb,0xd9,0xd9,0xbc,
       -        0xb9,0xb9,0xb9,0xca,0xca,0xba,0xba,0xcb,0xcb,0xcb,0xbb,0xbb,0xcc,0xcc,0xcc,0xbc,
       -        0xc9,0xc9,0xc9,0xca,0xca,0xca,0xba,0xcb,0xcb,0xcb,0xbb,0xcc,0xcc,0xcc,0xdd,0xdd,
       -        0xc9,0xc9,0xc9,0xca,0xca,0xdb,0xdb,0xcb,0xcb,0xdc,0xdc,0xcc,0xcc,0xdd,0xdd,0xdd,
       -        0xda,0xda,0xda,0xdb,0xdb,0xdb,0xdb,0xdc,0xdc,0xdc,0xdc,0xcc,0xdd,0xdd,0xdd,0xb0,
       -        0xbd,0xbd,0xbd,0xdb,0xbe,0xbe,0xbe,0xdc,0xdc,0xbf,0xbf,0xbf,0xdd,0xdd,0xb0,0xb0,
       -        0xde,0xde,0xde,0xdf,0xdf,0xdf,0xe0,0xcf,0xd0,0xd0,0xe1,0xc0,0xc0,0xd1,0xd1,0xe2,
       -        0xde,0xde,0xde,0xdf,0xdf,0xdf,0xe0,0xcf,0xd0,0xd0,0xe1,0xc0,0xc0,0xd1,0xd1,0xe2,
       -        0xde,0xde,0xde,0xdf,0xdf,0xdf,0xe0,0xc3,0xd0,0xd0,0xe1,0xc0,0xc0,0xd1,0xd1,0xe2,
       -        0xd2,0xd2,0xd2,0xc2,0xd3,0xd3,0xd3,0xc3,0xc3,0xd4,0xd4,0xc4,0xc4,0xd5,0xd5,0xe6,
       -        0xd2,0xd2,0xd2,0xd3,0xd3,0xd3,0xd3,0xc3,0xd4,0xd4,0xd4,0xc4,0xc4,0xd5,0xd5,0xe6,
       -        0xd2,0xd2,0xd2,0xd3,0xd3,0xd3,0xe4,0xc3,0xd4,0xd4,0xe5,0xc4,0xd5,0xd5,0xe6,0xe6,
       -        0xe3,0xe3,0xe3,0xd3,0xd3,0xe4,0xb6,0xd4,0xd4,0xe5,0xe5,0xb7,0xd5,0xd5,0xe6,0xe6,
       -        0xc5,0xc5,0xc5,0xc6,0xc6,0xc6,0xd7,0xc7,0xc7,0xd8,0xd8,0xc8,0xc8,0xd9,0xd9,0xd9,
       -        0xd6,0xd6,0xd6,0xc6,0xd7,0xd7,0xd7,0xc7,0xd8,0xd8,0xd8,0xc8,0xc8,0xd9,0xd9,0xea,
       -        0xd6,0xd6,0xd6,0xd7,0xd7,0xd7,0xe8,0xd8,0xd8,0xd8,0xe9,0xc8,0xd9,0xd9,0xea,0xea,
       -        0xe7,0xe7,0xe7,0xd7,0xd7,0xe8,0xe8,0xd8,0xd8,0xe9,0xe9,0xe9,0xd9,0xd9,0xea,0xea,
       -        0xc9,0xc9,0xc9,0xca,0xca,0xca,0xba,0xcb,0xcb,0xcb,0xe9,0xcc,0xcc,0xcc,0xea,0xea,
       -        0xc9,0xc9,0xc9,0xca,0xca,0xdb,0xdb,0xcb,0xcb,0xdc,0xdc,0xcc,0xcc,0xdd,0xdd,0xdd,
       -        0xda,0xda,0xda,0xdb,0xdb,0xdb,0xdb,0xdc,0xdc,0xdc,0xdc,0xcc,0xdd,0xdd,0xdd,0xee,
       -        0xda,0xda,0xda,0xdb,0xdb,0xec,0xec,0xdc,0xdc,0xed,0xed,0xed,0xdd,0xdd,0xee,0xee,
       -        0xeb,0xeb,0xeb,0xec,0xec,0xec,0xec,0xdc,0xed,0xed,0xed,0xed,0xdd,0xee,0xee,0xee,
       -        0xef,0xef,0xef,0xdf,0xe0,0xe0,0xe0,0xd0,0xd0,0xe1,0xe1,0xf2,0xd1,0xd1,0xe2,0xe2,
       -        0xef,0xef,0xef,0xdf,0xe0,0xe0,0xe0,0xd0,0xd0,0xe1,0xe1,0xf2,0xd1,0xd1,0xe2,0xe2,
       -        0xef,0xef,0xef,0xdf,0xe0,0xe0,0xe0,0xd0,0xd0,0xe1,0xe1,0xf2,0xd1,0xd1,0xe2,0xe2,
       -        0xd2,0xd2,0xd2,0xd3,0xd3,0xe4,0xe4,0xd4,0xd4,0xd4,0xe5,0xe5,0xd5,0xd5,0xe6,0xe6,
       -        0xe3,0xe3,0xe3,0xd3,0xe4,0xe4,0xe4,0xd4,0xd4,0xe5,0xe5,0xf6,0xd5,0xd5,0xe6,0xe6,
       -        0xe3,0xe3,0xe3,0xe4,0xe4,0xe4,0xe4,0xd4,0xe5,0xe5,0xe5,0xf6,0xd5,0xe6,0xe6,0xf7,
       -        0xe3,0xe3,0xe3,0xe4,0xe4,0xe4,0xf5,0xf5,0xe5,0xe5,0xf6,0xf6,0xd5,0xe6,0xe6,0xf7,
       -        0xd6,0xd6,0xd6,0xd7,0xd7,0xd7,0xf5,0xc7,0xd8,0xd8,0xf6,0xc8,0xd9,0xd9,0xd9,0xf7,
       -        0xd6,0xd6,0xd6,0xd7,0xd7,0xe8,0xe8,0xd8,0xd8,0xd8,0xe9,0xe9,0xd9,0xd9,0xea,0xea,
       -        0xe7,0xe7,0xe7,0xd7,0xe8,0xe8,0xe8,0xd8,0xd8,0xe9,0xe9,0xe9,0xd9,0xea,0xea,0xea,
       -        0xe7,0xe7,0xe7,0xe8,0xe8,0xe8,0xf9,0xf9,0xe9,0xe9,0xe9,0xfa,0xd9,0xea,0xea,0xfb,
       -        0xf8,0xf8,0xf8,0xe8,0xf9,0xf9,0xf9,0xcb,0xe9,0xe9,0xfa,0xfa,0xcc,0xea,0xea,0xfb,
       -        0xda,0xda,0xda,0xdb,0xdb,0xdb,0xdb,0xdc,0xdc,0xdc,0xdc,0xcc,0xdd,0xdd,0xdd,0xee,
       -        0xda,0xda,0xda,0xdb,0xdb,0xec,0xec,0xdc,0xdc,0xed,0xed,0xed,0xdd,0xdd,0xee,0xee,
       -        0xeb,0xeb,0xeb,0xec,0xec,0xec,0xec,0xdc,0xed,0xed,0xed,0xed,0xdd,0xee,0xee,0xee,
       -        0xeb,0xeb,0xeb,0xec,0xec,0xfd,0xfd,0xfd,0xed,0xed,0xfe,0xfe,0xee,0xee,0xee,0xff,
       -        0xf0,0xf0,0xf0,0xe0,0xf1,0xf1,0xf1,0xf1,0xe1,0xf2,0xf2,0xf2,0xf2,0xe2,0xe2,0xf3,
       -        0xf0,0xf0,0xf0,0xe0,0xf1,0xf1,0xf1,0xf1,0xe1,0xf2,0xf2,0xf2,0xf2,0xe2,0xe2,0xf3,
       -        0xf0,0xf0,0xf0,0xe0,0xf1,0xf1,0xf1,0xf1,0xe1,0xf2,0xf2,0xf2,0xf2,0xe2,0xe2,0xf3,
       -        0xe3,0xe3,0xe3,0xe4,0xe4,0xe4,0xf5,0xf5,0xe5,0xe5,0xf6,0xf6,0xd5,0xe6,0xe6,0xf7,
       -        0xf4,0xf4,0xf4,0xe4,0xe4,0xf5,0xf5,0xf5,0xe5,0xe5,0xf6,0xf6,0xf6,0xe6,0xe6,0xf7,
       -        0xf4,0xf4,0xf4,0xe4,0xf5,0xf5,0xf5,0xf5,0xe5,0xf6,0xf6,0xf6,0xf6,0xe6,0xf7,0xf7,
       -        0xf4,0xf4,0xf4,0xf5,0xf5,0xf5,0xf5,0xf5,0xe5,0xf6,0xf6,0xf6,0xf6,0xe6,0xf7,0xf7,
       -        0xf4,0xf4,0xf4,0xf5,0xf5,0xf5,0xf5,0xf5,0xd8,0xf6,0xf6,0xf6,0xd9,0xd9,0xf7,0xf7,
       -        0xe7,0xe7,0xe7,0xe8,0xe8,0xe8,0xe8,0xd8,0xe9,0xe9,0xe9,0xfa,0xd9,0xea,0xea,0xea,
       -        0xf8,0xf8,0xf8,0xe8,0xe8,0xf9,0xf9,0xf9,0xe9,0xe9,0xfa,0xfa,0xfa,0xea,0xea,0xfb,
       -        0xf8,0xf8,0xf8,0xf9,0xf9,0xf9,0xf9,0xf9,0xe9,0xfa,0xfa,0xfa,0xfa,0xea,0xfb,0xfb,
       -        0xf8,0xf8,0xf8,0xf9,0xf9,0xf9,0xf9,0xf9,0xfa,0xfa,0xfa,0xfa,0xfa,0xea,0xfb,0xfb,
       -        0xf8,0xf8,0xf8,0xdb,0xf9,0xf9,0xf9,0xdc,0xdc,0xfa,0xfa,0xfa,0xdd,0xdd,0xee,0xfb,
       -        0xeb,0xeb,0xeb,0xec,0xec,0xec,0xec,0xdc,0xed,0xed,0xed,0xed,0xdd,0xee,0xee,0xee,
       -        0xeb,0xeb,0xeb,0xec,0xec,0xfd,0xfd,0xfd,0xed,0xed,0xfe,0xfe,0xee,0xee,0xee,0xff,
       -        0xfc,0xfc,0xfc,0xfd,0xfd,0xfd,0xfd,0xfd,0xed,0xfe,0xfe,0xfe,0xfe,0xee,0xff,0xff,
       -}
       -};
       -Memcmap *memdefcmap = &def;
       -void _memmkcmap(void){}
 (DIR) diff --git a/src/libdraw/md-cread.c b/src/libdraw/md-cread.c
       t@@ -1,96 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -
       -Memimage*
       -creadmemimage(int fd)
       -{
       -        char hdr[5*12+1];
       -        Rectangle r;
       -        int m, nb, miny, maxy, new, ldepth, ncblock;
       -        uchar *buf;
       -        Memimage *i;
       -        u32int chan;
       -
       -        if(readn(fd, hdr, 5*12) != 5*12){
       -                werrstr("readmemimage: short header (2)");
       -                return nil;
       -        }
       -
       -        /*
       -         * distinguish new channel descriptor from old ldepth.
       -         * channel descriptors have letters as well as numbers,
       -         * while ldepths are a single digit formatted as %-11d.
       -         */
       -        new = 0;
       -        for(m=0; m<10; m++){
       -                if(hdr[m] != ' '){
       -                        new = 1;
       -                        break;
       -                }
       -        }
       -        if(hdr[11] != ' '){
       -                werrstr("creadimage: bad format");
       -                return nil;
       -        }
       -        if(new){
       -                hdr[11] = '\0';
       -                if((chan = strtochan(hdr)) == 0){
       -                        werrstr("creadimage: bad channel string %s", hdr);
       -                        return nil;
       -                }
       -        }else{
       -                ldepth = ((int)hdr[10])-'0';
       -                if(ldepth<0 || ldepth>3){
       -                        werrstr("creadimage: bad ldepth %d", ldepth);
       -                        return nil;
       -                }
       -                chan = drawld2chan[ldepth];
       -        }
       -        r.min.x=atoi(hdr+1*12);
       -        r.min.y=atoi(hdr+2*12);
       -        r.max.x=atoi(hdr+3*12);
       -        r.max.y=atoi(hdr+4*12);
       -        if(r.min.x>r.max.x || r.min.y>r.max.y){
       -                werrstr("creadimage: bad rectangle");
       -                return nil;
       -        }
       -
       -        i = allocmemimage(r, chan);
       -        if(i == nil)
       -                return nil;
       -        ncblock = _compblocksize(r, i->depth);
       -        buf = malloc(ncblock);
       -        if(buf == nil)
       -                goto Errout;
       -        miny = r.min.y;
       -        while(miny != r.max.y){
       -                if(readn(fd, hdr, 2*12) != 2*12){
       -                Shortread:
       -                        werrstr("readmemimage: short read");
       -                Errout:
       -                        freememimage(i);
       -                        free(buf);
       -                        return nil;
       -                }
       -                maxy = atoi(hdr+0*12);
       -                nb = atoi(hdr+1*12);
       -                if(maxy<=miny || r.max.y<maxy){
       -                        werrstr("readimage: bad maxy %d", maxy);
       -                        goto Errout;
       -                }
       -                if(nb<=0 || ncblock<nb){
       -                        werrstr("readimage: bad count %d", nb);
       -                        goto Errout;
       -                }
       -                if(readn(fd, buf, nb)!=nb)
       -                        goto Shortread;
       -                if(!new)        /* old image: flip the data bits */
       -                        _twiddlecompressed(buf, nb);
       -                cloadmemimage(i, Rect(r.min.x, miny, r.max.x, maxy), buf, nb);
       -                miny = maxy;
       -        }
       -        free(buf);
       -        return i;
       -}
 (DIR) diff --git a/src/libdraw/md-defont.c b/src/libdraw/md-defont.c
       t@@ -1,68 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -
       -Memsubfont*
       -getmemdefont(void)
       -{
       -        char *hdr, *p;
       -        int n;
       -        Fontchar *fc;
       -        Memsubfont *f;
       -        int ld;
       -        Rectangle r;
       -        Memdata *md;
       -        Memimage *i;
       -
       -        /*
       -         * make sure data is word-aligned.  this is true with Plan 9 compilers
       -         * but not in general.  the byte order is right because the data is
       -         * declared as char*, not u32int*.
       -         */
       -        p = (char*)defontdata;
       -        n = (uintptr)p & 3;
       -        if(n != 0){
       -                memmove(p+(4-n), p, sizeofdefont-n);
       -                p += 4-n;
       -        }
       -        ld = atoi(p+0*12);
       -        r.min.x = atoi(p+1*12);
       -        r.min.y = atoi(p+2*12);
       -        r.max.x = atoi(p+3*12);
       -        r.max.y = atoi(p+4*12);
       -
       -        md = mallocz(sizeof(Memdata), 1);
       -        if(md == nil)
       -                return nil;
       -        
       -        p += 5*12;
       -
       -        md->base = nil;                /* so freememimage doesn't free p */
       -        md->bdata = (uchar*)p;        /* ick */
       -        md->ref = 1;
       -        md->allocd = 1;                /* so freememimage does free md */
       -
       -        i = allocmemimaged(r, drawld2chan[ld], md, nil);
       -        if(i == nil){
       -                free(md);
       -                return nil;
       -        }
       -
       -        hdr = p+Dy(r)*i->width*sizeof(u32int);
       -        n = atoi(hdr);
       -        p = hdr+3*12;
       -        fc = malloc(sizeof(Fontchar)*(n+1));
       -        if(fc == 0){
       -                freememimage(i);
       -                return 0;
       -        }
       -        _unpackinfo(fc, (uchar*)p, n);
       -        f = allocmemsubfont("*default*", n, atoi(hdr+12), atoi(hdr+24), fc, i);
       -        if(f == 0){
       -                freememimage(i);
       -                free(fc);
       -                return 0;
       -        }
       -        return f;
       -}
 (DIR) diff --git a/src/libdraw/md-draw.c b/src/libdraw/md-draw.c
       t@@ -1,2489 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -
       -int drawdebug;
       -static int        tablesbuilt;
       -
       -/* perfect approximation to NTSC = .299r+.587g+.114b when 0 ≤ r,g,b < 256 */
       -#define RGB2K(r,g,b)        ((156763*(r)+307758*(g)+59769*(b))>>19)
       -
       -/*
       - * for 0 ≤ x ≤ 255*255, (x*0x0101+0x100)>>16 is a perfect approximation.
       - * for 0 ≤ x < (1<<16), x/255 = ((x+1)*0x0101)>>16 is a perfect approximation.
       - * the last one is perfect for all up to 1<<16, avoids a multiply, but requires a rathole.
       - */
       -/* #define DIV255(x) (((x)*257+256)>>16)  */
       -#define DIV255(x) ((((x)+1)*257)>>16)
       -/* #define DIV255(x) (tmp=(x)+1, (tmp+(tmp>>8))>>8) */
       -
       -#define MUL(x, y, t)        (t = (x)*(y)+128, (t+(t>>8))>>8)
       -#define MASK13        0xFF00FF00
       -#define MASK02        0x00FF00FF
       -#define MUL13(a, x, t)                (t = (a)*(((x)&MASK13)>>8)+128, ((t+((t>>8)&MASK02))>>8)&MASK02)
       -#define MUL02(a, x, t)                (t = (a)*(((x)&MASK02)>>0)+128, ((t+((t>>8)&MASK02))>>8)&MASK02)
       -#define MUL0123(a, x, s, t)        ((MUL13(a, x, s)<<8)|MUL02(a, x, t))
       -
       -#define MUL2(u, v, x, y)        (t = (u)*(v)+(x)*(y)+256, (t+(t>>8))>>8)
       -
       -static void mktables(void);
       -typedef int Subdraw(Memdrawparam*);
       -static Subdraw chardraw, alphadraw, memoptdraw;
       -
       -static Memimage*        memones;
       -static Memimage*        memzeros;
       -Memimage *memwhite;
       -Memimage *memblack;
       -Memimage *memtransparent;
       -Memimage *memopaque;
       -
       -int        __ifmt(Fmt*);
       -
       -void
       -memimageinit(void)
       -{
       -        static int didinit = 0;
       -
       -        if(didinit)
       -                return;
       -
       -        didinit = 1;
       -
       -        mktables();
       -        _memmkcmap();
       -
       -        fmtinstall('R', Rfmt); 
       -        fmtinstall('P', Pfmt);
       -        fmtinstall('b', __ifmt);
       -
       -        memones = allocmemimage(Rect(0,0,1,1), GREY1);
       -        memones->flags |= Frepl;
       -        memones->clipr = Rect(-0x3FFFFFF, -0x3FFFFFF, 0x3FFFFFF, 0x3FFFFFF);
       -        *byteaddr(memones, ZP) = ~0;
       -
       -        memzeros = allocmemimage(Rect(0,0,1,1), GREY1);
       -        memzeros->flags |= Frepl;
       -        memzeros->clipr = Rect(-0x3FFFFFF, -0x3FFFFFF, 0x3FFFFFF, 0x3FFFFFF);
       -        *byteaddr(memzeros, ZP) = 0;
       -
       -        if(memones == nil || memzeros == nil)
       -                assert(0 /*cannot initialize memimage library */);        /* RSC BUG */
       -
       -        memwhite = memones;
       -        memblack = memzeros;
       -        memopaque = memones;
       -        memtransparent = memzeros;
       -}
       -
       -u32int _imgtorgba(Memimage*, u32int);
       -u32int _rgbatoimg(Memimage*, u32int);
       -u32int _pixelbits(Memimage*, Point);
       -
       -#define DBG if(drawdebug)
       -static Memdrawparam par;
       -
       -Memdrawparam*
       -_memimagedrawsetup(Memimage *dst, Rectangle r, Memimage *src, Point p0, Memimage *mask, Point p1, int op)
       -{
       -        if(mask == nil)
       -                mask = memopaque;
       -
       -DBG        print("memimagedraw %p/%luX %R @ %p %p/%luX %P %p/%luX %P... ", dst, dst->chan, r, dst->data->bdata, src, src->chan, p0, mask, mask->chan, p1);
       -
       -        if(drawclip(dst, &r, src, &p0, mask, &p1, &par.sr, &par.mr) == 0){
       -/*                if(drawdebug) */
       -/*                        iprint("empty clipped rectangle\n"); */
       -                return nil;
       -        }
       -
       -        if(op < Clear || op > SoverD){
       -/*                if(drawdebug) */
       -/*                        iprint("op out of range: %d\n", op); */
       -                return nil;
       -        }
       -
       -        par.op = op;
       -        par.dst = dst;
       -        par.r = r;
       -        par.src = src;
       -        /* par.sr set by drawclip */
       -        par.mask = mask;
       -        /* par.mr set by drawclip */
       -
       -        par.state = 0;
       -        if(src->flags&Frepl){
       -                par.state |= Replsrc;
       -                if(Dx(src->r)==1 && Dy(src->r)==1){
       -                        par.sval = pixelbits(src, src->r.min);
       -                        par.state |= Simplesrc;
       -                        par.srgba = _imgtorgba(src, par.sval);
       -                        par.sdval = _rgbatoimg(dst, par.srgba);
       -                        if((par.srgba&0xFF) == 0 && (op&DoutS)){
       -/*                                if (drawdebug) iprint("fill with transparent source\n"); */
       -                                return nil;        /* no-op successfully handled */
       -                        }
       -                        if((par.srgba&0xFF) == 0xFF)
       -                                par.state |= Fullsrc;
       -                }
       -        }
       -
       -        if(mask->flags & Frepl){
       -                par.state |= Replmask;
       -                if(Dx(mask->r)==1 && Dy(mask->r)==1){
       -                        par.mval = pixelbits(mask, mask->r.min);
       -                        if(par.mval == 0 && (op&DoutS)){
       -/*                                if(drawdebug) iprint("fill with zero mask\n"); */
       -                                return nil;        /* no-op successfully handled */
       -                        }
       -                        par.state |= Simplemask;
       -                        if(par.mval == ~0)
       -                                par.state |= Fullmask;
       -                        par.mrgba = _imgtorgba(mask, par.mval);
       -                }
       -        }
       -
       -/*        if(drawdebug) */
       -/*                iprint("dr %R sr %R mr %R...", r, par.sr, par.mr); */
       -DBG print("draw dr %R sr %R mr %R %lux\n", r, par.sr, par.mr, par.state);
       -
       -        return &par;
       -}
       -
       -void
       -_memimagedraw(Memdrawparam *par)
       -{
       -        /*
       -         * Now that we've clipped the parameters down to be consistent, we 
       -         * simply try sub-drawing routines in order until we find one that was able
       -         * to handle us.  If the sub-drawing routine returns zero, it means it was
       -         * unable to satisfy the request, so we do not return.
       -         */
       -
       -        /*
       -         * Hardware support.  Each video driver provides this function,
       -         * which checks to see if there is anything it can help with.
       -         * There could be an if around this checking to see if dst is in video memory.
       -         */
       -DBG print("test hwdraw\n");
       -        if(hwdraw(par)){
       -/*if(drawdebug) iprint("hw handled\n"); */
       -DBG print("hwdraw handled\n");
       -                return;
       -        }
       -        /*
       -         * Optimizations using memmove and memset.
       -         */
       -DBG print("test memoptdraw\n");
       -        if(memoptdraw(par)){
       -/*if(drawdebug) iprint("memopt handled\n"); */
       -DBG print("memopt handled\n");
       -                return;
       -        }
       -
       -        /*
       -         * Character drawing.
       -         * Solid source color being painted through a boolean mask onto a high res image.
       -         */
       -DBG print("test chardraw\n");
       -        if(chardraw(par)){
       -/*if(drawdebug) iprint("chardraw handled\n"); */
       -DBG print("chardraw handled\n");
       -                return;
       -        }
       -
       -        /*
       -         * General calculation-laden case that does alpha for each pixel.
       -         */
       -DBG print("do alphadraw\n");
       -        alphadraw(par);
       -/*if(drawdebug) iprint("alphadraw handled\n"); */
       -DBG print("alphadraw handled\n");
       -}
       -#undef DBG
       -
       -/*
       - * Clip the destination rectangle further based on the properties of the 
       - * source and mask rectangles.  Once the destination rectangle is properly
       - * clipped, adjust the source and mask rectangles to be the same size.
       - * Then if source or mask is replicated, move its clipped rectangle
       - * so that its minimum point falls within the repl rectangle.
       - *
       - * Return zero if the final rectangle is null.
       - */
       -int
       -drawclip(Memimage *dst, Rectangle *r, Memimage *src, Point *p0, Memimage *mask, Point *p1, Rectangle *sr, Rectangle *mr)
       -{
       -        Point rmin, delta;
       -        int splitcoords;
       -        Rectangle omr;
       -
       -        if(r->min.x>=r->max.x || r->min.y>=r->max.y)
       -                return 0;
       -        splitcoords = (p0->x!=p1->x) || (p0->y!=p1->y);
       -        /* clip to destination */
       -        rmin = r->min;
       -        if(!rectclip(r, dst->r) || !rectclip(r, dst->clipr))
       -                return 0;
       -        /* move mask point */
       -        p1->x += r->min.x-rmin.x;
       -        p1->y += r->min.y-rmin.y;
       -        /* move source point */
       -        p0->x += r->min.x-rmin.x;
       -        p0->y += r->min.y-rmin.y;
       -        /* map destination rectangle into source */
       -        sr->min = *p0;
       -        sr->max.x = p0->x+Dx(*r);
       -        sr->max.y = p0->y+Dy(*r);
       -        /* sr is r in source coordinates; clip to source */
       -        if(!(src->flags&Frepl) && !rectclip(sr, src->r))
       -                return 0;
       -        if(!rectclip(sr, src->clipr))
       -                return 0;
       -        /* compute and clip rectangle in mask */
       -        if(splitcoords){
       -                /* move mask point with source */
       -                p1->x += sr->min.x-p0->x;
       -                p1->y += sr->min.y-p0->y;
       -                mr->min = *p1;
       -                mr->max.x = p1->x+Dx(*sr);
       -                mr->max.y = p1->y+Dy(*sr);
       -                omr = *mr;
       -                /* mr is now rectangle in mask; clip it */
       -                if(!(mask->flags&Frepl) && !rectclip(mr, mask->r))
       -                        return 0;
       -                if(!rectclip(mr, mask->clipr))
       -                        return 0;
       -                /* reflect any clips back to source */
       -                sr->min.x += mr->min.x-omr.min.x;
       -                sr->min.y += mr->min.y-omr.min.y;
       -                sr->max.x += mr->max.x-omr.max.x;
       -                sr->max.y += mr->max.y-omr.max.y;
       -                *p1 = mr->min;
       -        }else{
       -                if(!(mask->flags&Frepl) && !rectclip(sr, mask->r))
       -                        return 0;
       -                if(!rectclip(sr, mask->clipr))
       -                        return 0;
       -                *p1 = sr->min;
       -        }
       -
       -        /* move source clipping back to destination */
       -        delta.x = r->min.x - p0->x;
       -        delta.y = r->min.y - p0->y;
       -        r->min.x = sr->min.x + delta.x;
       -        r->min.y = sr->min.y + delta.y;
       -        r->max.x = sr->max.x + delta.x;
       -        r->max.y = sr->max.y + delta.y;
       -
       -        /* move source rectangle so sr->min is in src->r */
       -        if(src->flags&Frepl) {
       -                delta.x = drawreplxy(src->r.min.x, src->r.max.x, sr->min.x) - sr->min.x;
       -                delta.y = drawreplxy(src->r.min.y, src->r.max.y, sr->min.y) - sr->min.y;
       -                sr->min.x += delta.x;
       -                sr->min.y += delta.y;
       -                sr->max.x += delta.x;
       -                sr->max.y += delta.y;
       -        }
       -        *p0 = sr->min;
       -
       -        /* move mask point so it is in mask->r */
       -        *p1 = drawrepl(mask->r, *p1);
       -        mr->min = *p1;
       -        mr->max.x = p1->x+Dx(*sr);
       -        mr->max.y = p1->y+Dy(*sr);
       -
       -        assert(Dx(*sr) == Dx(*mr) && Dx(*mr) == Dx(*r));
       -        assert(Dy(*sr) == Dy(*mr) && Dy(*mr) == Dy(*r));
       -        assert(ptinrect(*p0, src->r));
       -        assert(ptinrect(*p1, mask->r));
       -        assert(ptinrect(r->min, dst->r));
       -
       -        return 1;
       -}
       -
       -/*
       - * Conversion tables.
       - */
       -static uchar replbit[1+8][256];                /* replbit[x][y] is the replication of the x-bit quantity y to 8-bit depth */
       -static uchar conv18[256][8];                /* conv18[x][y] is the yth pixel in the depth-1 pixel x */
       -static uchar conv28[256][4];                /* ... */
       -static uchar conv48[256][2];
       -
       -/*
       - * bitmap of how to replicate n bits to fill 8, for 1 ≤ n ≤ 8.
       - * the X's are where to put the bottom (ones) bit of the n-bit pattern.
       - * only the top 8 bits of the result are actually used.
       - * (the lower 8 bits are needed to get bits in the right place
       - * when n is not a divisor of 8.)
       - *
       - * Should check to see if its easier to just refer to replmul than
       - * use the precomputed values in replbit.  On PCs it may well
       - * be; on machines with slow multiply instructions it probably isn't.
       - */
       -#define a ((((((((((((((((0
       -#define X *2+1)
       -#define _ *2)
       -static int replmul[1+8] = {
       -        0,
       -        a X X X X X X X X X X X X X X X X,
       -        a _ X _ X _ X _ X _ X _ X _ X _ X,
       -        a _ _ X _ _ X _ _ X _ _ X _ _ X _,
       -        a _ _ _ X _ _ _ X _ _ _ X _ _ _ X,
       -        a _ _ _ _ X _ _ _ _ X _ _ _ _ X _,
       -        a _ _ _ _ _ X _ _ _ _ _ X _ _ _ _, 
       -        a _ _ _ _ _ _ X _ _ _ _ _ _ X _ _,
       -        a _ _ _ _ _ _ _ X _ _ _ _ _ _ _ X,
       -};
       -#undef a
       -#undef X
       -#undef _
       -
       -static void
       -mktables(void)
       -{
       -        int i, j, mask, sh, small;
       -                
       -        if(tablesbuilt)
       -                return;
       -
       -        fmtinstall('R', Rfmt);
       -        fmtinstall('P', Pfmt);
       -        tablesbuilt = 1;
       -
       -        /* bit replication up to 8 bits */
       -        for(i=0; i<256; i++){
       -                for(j=0; j<=8; j++){        /* j <= 8 [sic] */
       -                        small = i & ((1<<j)-1);
       -                        replbit[j][i] = (small*replmul[j])>>8;
       -                }
       -        }
       -
       -        /* bit unpacking up to 8 bits, only powers of 2 */
       -        for(i=0; i<256; i++){
       -                for(j=0, sh=7, mask=1; j<8; j++, sh--)
       -                        conv18[i][j] = replbit[1][(i>>sh)&mask];
       -
       -                for(j=0, sh=6, mask=3; j<4; j++, sh-=2)
       -                        conv28[i][j] = replbit[2][(i>>sh)&mask];
       -
       -                for(j=0, sh=4, mask=15; j<2; j++, sh-=4)
       -                        conv48[i][j] = replbit[4][(i>>sh)&mask];
       -        }
       -}
       -
       -static uchar ones = 0xff;
       -
       -/*
       - * General alpha drawing case.  Can handle anything.
       - */
       -typedef struct        Buffer        Buffer;
       -struct Buffer {
       -        /* used by most routines */
       -        uchar        *red;
       -        uchar        *grn;
       -        uchar        *blu;
       -        uchar        *alpha;
       -        uchar        *grey;
       -        u32int        *rgba;
       -        int        delta;        /* number of bytes to add to pointer to get next pixel to the right */
       -
       -        /* used by boolcalc* for mask data */
       -        uchar        *m;                /* ptr to mask data r.min byte; like p->bytermin */
       -        int                mskip;        /* no. of left bits to skip in *m */
       -        uchar        *bm;                /* ptr to mask data img->r.min byte; like p->bytey0s */
       -        int                bmskip;        /* no. of left bits to skip in *bm */
       -        uchar        *em;                /* ptr to mask data img->r.max.x byte; like p->bytey0e */
       -        int                emskip;        /* no. of right bits to skip in *em */
       -};
       -
       -typedef struct        Param        Param;
       -typedef Buffer        Readfn(Param*, uchar*, int);
       -typedef void        Writefn(Param*, uchar*, Buffer);
       -typedef Buffer        Calcfn(Buffer, Buffer, Buffer, int, int, int);
       -
       -enum {
       -        MAXBCACHE = 16
       -};
       -
       -/* giant rathole to customize functions with */
       -struct Param {
       -        Readfn        *replcall;
       -        Readfn        *greymaskcall;        
       -        Readfn        *convreadcall;
       -        Writefn        *convwritecall;
       -
       -        Memimage *img;
       -        Rectangle        r;
       -        int        dx;        /* of r */
       -        int        needbuf;
       -        int        convgrey;
       -        int        alphaonly;
       -
       -        uchar        *bytey0s;                /* byteaddr(Pt(img->r.min.x, img->r.min.y)) */
       -        uchar        *bytermin;        /* byteaddr(Pt(r.min.x, img->r.min.y)) */
       -        uchar        *bytey0e;                /* byteaddr(Pt(img->r.max.x, img->r.min.y)) */
       -        int                bwidth;
       -
       -        int        replcache;        /* if set, cache buffers */
       -        Buffer        bcache[MAXBCACHE];
       -        u32int        bfilled;
       -        uchar        *bufbase;
       -        int        bufoff;
       -        int        bufdelta;
       -
       -        int        dir;
       -
       -        int        convbufoff;
       -        uchar        *convbuf;
       -        Param        *convdpar;
       -        int        convdx;
       -};
       -
       -static uchar *drawbuf;
       -static int        ndrawbuf;
       -static int        mdrawbuf;
       -static Param spar, mpar, dpar;        /* easier on the stacks */
       -static Readfn        greymaskread, replread, readptr;
       -static Writefn        nullwrite;
       -static Calcfn        alphacalc0, alphacalc14, alphacalc2810, alphacalc3679, alphacalc5, alphacalc11, alphacalcS;
       -static Calcfn        boolcalc14, boolcalc236789, boolcalc1011;
       -
       -static Readfn*        readfn(Memimage*);
       -static Readfn*        readalphafn(Memimage*);
       -static Writefn*        writefn(Memimage*);
       -
       -static Calcfn*        boolcopyfn(Memimage*, Memimage*);
       -static Readfn*        convfn(Memimage*, Param*, Memimage*, Param*);
       -
       -static Calcfn *alphacalc[Ncomp] = 
       -{
       -        alphacalc0,                /* Clear */
       -        alphacalc14,                /* DoutS */
       -        alphacalc2810,                /* SoutD */
       -        alphacalc3679,                /* DxorS */
       -        alphacalc14,                /* DinS */
       -        alphacalc5,                /* D */
       -        alphacalc3679,                /* DatopS */
       -        alphacalc3679,                /* DoverS */
       -        alphacalc2810,                /* SinD */
       -        alphacalc3679,                /* SatopD */
       -        alphacalc2810,                /* S */
       -        alphacalc11,                /* SoverD */
       -};
       -
       -static Calcfn *boolcalc[Ncomp] =
       -{
       -        alphacalc0,                /* Clear */
       -        boolcalc14,                /* DoutS */
       -        boolcalc236789,                /* SoutD */
       -        boolcalc236789,                /* DxorS */
       -        boolcalc14,                /* DinS */
       -        alphacalc5,                /* D */
       -        boolcalc236789,                /* DatopS */
       -        boolcalc236789,                /* DoverS */
       -        boolcalc236789,                /* SinD */
       -        boolcalc236789,                /* SatopD */
       -        boolcalc1011,                /* S */
       -        boolcalc1011,                /* SoverD */
       -};
       -
       -static int
       -allocdrawbuf(void)
       -{
       -        uchar *p;
       -
       -        if(ndrawbuf > mdrawbuf){
       -                p = realloc(drawbuf, ndrawbuf);
       -                if(p == nil){
       -                        werrstr("memimagedraw out of memory");
       -                        return -1;
       -                }
       -                drawbuf = p;
       -                mdrawbuf = ndrawbuf;
       -        }
       -        return 0;
       -}
       -
       -static void
       -getparam(Param *p, Memimage *img, Rectangle r, int convgrey, int needbuf)
       -{
       -        int nbuf;
       -
       -        memset(p, 0, sizeof *p);
       -
       -        p->img = img;
       -        p->r = r;
       -        p->dx = Dx(r);
       -        p->needbuf = needbuf;
       -        p->convgrey = convgrey;
       -
       -        assert(img->r.min.x <= r.min.x && r.min.x < img->r.max.x);
       -
       -        p->bytey0s = byteaddr(img, Pt(img->r.min.x, img->r.min.y));
       -        p->bytermin = byteaddr(img, Pt(r.min.x, img->r.min.y));
       -        p->bytey0e = byteaddr(img, Pt(img->r.max.x, img->r.min.y));
       -        p->bwidth = sizeof(u32int)*img->width;
       -
       -        assert(p->bytey0s <= p->bytermin && p->bytermin <= p->bytey0e);
       -
       -        if(p->r.min.x == p->img->r.min.x)
       -                assert(p->bytermin == p->bytey0s);
       -
       -        nbuf = 1;
       -        if((img->flags&Frepl) && Dy(img->r) <= MAXBCACHE && Dy(img->r) < Dy(r)){
       -                p->replcache = 1;
       -                nbuf = Dy(img->r);
       -        }
       -        p->bufdelta = 4*p->dx;
       -        p->bufoff = ndrawbuf;
       -        ndrawbuf += p->bufdelta*nbuf;
       -}
       -
       -static void
       -clipy(Memimage *img, int *y)
       -{
       -        int dy;
       -
       -        dy = Dy(img->r);
       -        if(*y == dy)
       -                *y = 0;
       -        else if(*y == -1)
       -                *y = dy-1;
       -        assert(0 <= *y && *y < dy);
       -}
       -
       -static void
       -dumpbuf(char *s, Buffer b, int n)
       -{
       -        int i;
       -        uchar *p;
       -        
       -        print("%s", s);
       -        for(i=0; i<n; i++){
       -                print(" ");
       -                if(p=b.grey){
       -                        print(" k%.2uX", *p);
       -                        b.grey += b.delta;
       -                }else{        
       -                        if(p=b.red){
       -                                print(" r%.2uX", *p);
       -                                b.red += b.delta;
       -                        }
       -                        if(p=b.grn){
       -                                print(" g%.2uX", *p);
       -                                b.grn += b.delta;
       -                        }
       -                        if(p=b.blu){
       -                                print(" b%.2uX", *p);
       -                                b.blu += b.delta;
       -                        }
       -                }
       -                if((p=b.alpha) != &ones){
       -                        print(" α%.2uX", *p);
       -                        b.alpha += b.delta;
       -                }
       -        }
       -        print("\n");
       -}
       -
       -/*
       - * For each scan line, we expand the pixels from source, mask, and destination
       - * into byte-aligned red, green, blue, alpha, and grey channels.  If buffering is not
       - * needed and the channels were already byte-aligned (grey8, rgb24, rgba32, rgb32),
       - * the readers need not copy the data: they can simply return pointers to the data.
       - * If the destination image is grey and the source is not, it is converted using the NTSC
       - * formula.
       - *
       - * Once we have all the channels, we call either rgbcalc or greycalc, depending on 
       - * whether the destination image is color.  This is allowed to overwrite the dst buffer (perhaps
       - * the actual data, perhaps a copy) with its result.  It should only overwrite the dst buffer
       - * with the same format (i.e. red bytes with red bytes, etc.)  A new buffer is returned from
       - * the calculator, and that buffer is passed to a function to write it to the destination.
       - * If the buffer is already pointing at the destination, the writing function is a no-op.
       - */
       -#define DBG if(drawdebug)
       -static int
       -alphadraw(Memdrawparam *par)
       -{
       -        int isgrey, starty, endy, op;
       -        int needbuf, dsty, srcy, masky;
       -        int y, dir, dx, dy;
       -        Buffer bsrc, bdst, bmask;
       -        Readfn *rdsrc, *rdmask, *rddst;
       -        Calcfn *calc;
       -        Writefn *wrdst;
       -        Memimage *src, *mask, *dst;
       -        Rectangle r, sr, mr;
       -
       -        if(drawdebug)
       -                print("alphadraw %R\n", par->r);
       -        r = par->r;
       -        dx = Dx(r);
       -        dy = Dy(r);
       -
       -        ndrawbuf = 0;
       -
       -        src = par->src;
       -        mask = par->mask;        
       -        dst = par->dst;
       -        sr = par->sr;
       -        mr = par->mr;
       -        op = par->op;
       -
       -        isgrey = dst->flags&Fgrey;
       -
       -        /*
       -         * Buffering when src and dst are the same bitmap is sufficient but not 
       -         * necessary.  There are stronger conditions we could use.  We could
       -         * check to see if the rectangles intersect, and if simply moving in the
       -         * correct y direction can avoid the need to buffer.
       -         */
       -        needbuf = (src->data == dst->data);
       -
       -        getparam(&spar, src, sr, isgrey, needbuf);
       -        getparam(&dpar, dst, r, isgrey, needbuf);
       -        getparam(&mpar, mask, mr, 0, needbuf);
       -
       -        dir = (needbuf && byteaddr(dst, r.min) > byteaddr(src, sr.min)) ? -1 : 1;
       -        spar.dir = mpar.dir = dpar.dir = dir;
       -
       -        /*
       -         * If the mask is purely boolean, we can convert from src to dst format
       -         * when we read src, and then just copy it to dst where the mask tells us to.
       -         * This requires a boolean (1-bit grey) mask and lack of a source alpha channel.
       -         *
       -         * The computation is accomplished by assigning the function pointers as follows:
       -         *        rdsrc - read and convert source into dst format in a buffer
       -         *         rdmask - convert mask to bytes, set pointer to it
       -         *         rddst - fill with pointer to real dst data, but do no reads
       -         *        calc - copy src onto dst when mask says to.
       -         *        wrdst - do nothing
       -         * This is slightly sleazy, since things aren't doing exactly what their names say,
       -         * but it avoids a fair amount of code duplication to make this a case here
       -         * rather than have a separate booldraw.
       -         */
       -/*if(drawdebug) iprint("flag %lud mchan %lux=?%x dd %d\n", src->flags&Falpha, mask->chan, GREY1, dst->depth); */
       -        if(!(src->flags&Falpha) && mask->chan == GREY1 && dst->depth >= 8 && op == SoverD){
       -/*if(drawdebug) iprint("boolcopy..."); */
       -                rdsrc = convfn(dst, &dpar, src, &spar);
       -                rddst = readptr;
       -                rdmask = readfn(mask);
       -                calc = boolcopyfn(dst, mask);
       -                wrdst = nullwrite;
       -        }else{
       -                /* usual alphadraw parameter fetching */
       -                rdsrc = readfn(src);
       -                rddst = readfn(dst);
       -                wrdst = writefn(dst);
       -                calc = alphacalc[op];
       -
       -                /*
       -                 * If there is no alpha channel, we'll ask for a grey channel
       -                 * and pretend it is the alpha.
       -                 */
       -                if(mask->flags&Falpha){
       -                        rdmask = readalphafn(mask);
       -                        mpar.alphaonly = 1;
       -                }else{
       -                        mpar.greymaskcall = readfn(mask);
       -                        mpar.convgrey = 1;
       -                        rdmask = greymaskread;
       -
       -                        /*
       -                         * Should really be above, but then boolcopyfns would have
       -                         * to deal with bit alignment, and I haven't written that.
       -                         *
       -                         * This is a common case for things like ellipse drawing.
       -                         * When there's no alpha involved and the mask is boolean,
       -                         * we can avoid all the division and multiplication.
       -                         */
       -                        if(mask->chan == GREY1 && !(src->flags&Falpha))
       -                                calc = boolcalc[op];
       -                        else if(op == SoverD && !(src->flags&Falpha))
       -                                calc = alphacalcS;
       -                }
       -        }
       -
       -        /*
       -         * If the image has a small enough repl rectangle,
       -         * we can just read each line once and cache them.
       -         */
       -        if(spar.replcache){
       -                spar.replcall = rdsrc;
       -                rdsrc = replread;
       -        }
       -        if(mpar.replcache){
       -                mpar.replcall = rdmask;
       -                rdmask = replread;
       -        }
       -
       -        if(allocdrawbuf() < 0)
       -                return 0;
       -
       -        /*
       -         * Before we were saving only offsets from drawbuf in the parameter
       -         * structures; now that drawbuf has been grown to accomodate us,
       -         * we can fill in the pointers.
       -         */
       -        spar.bufbase = drawbuf+spar.bufoff;
       -        mpar.bufbase = drawbuf+mpar.bufoff;
       -        dpar.bufbase = drawbuf+dpar.bufoff;
       -        spar.convbuf = drawbuf+spar.convbufoff;
       -
       -        if(dir == 1){
       -                starty = 0;
       -                endy = dy;
       -        }else{
       -                starty = dy-1;
       -                endy = -1;
       -        }
       -
       -        /*
       -         * srcy, masky, and dsty are offsets from the top of their
       -         * respective Rectangles.  they need to be contained within
       -         * the rectangles, so clipy can keep them there without division.
       -          */
       -        srcy = (starty + sr.min.y - src->r.min.y)%Dy(src->r);
       -        masky = (starty + mr.min.y - mask->r.min.y)%Dy(mask->r);
       -        dsty = starty + r.min.y - dst->r.min.y;
       -
       -        assert(0 <= srcy && srcy < Dy(src->r));
       -        assert(0 <= masky && masky < Dy(mask->r));
       -        assert(0 <= dsty && dsty < Dy(dst->r));
       -
       -        if(drawdebug)
       -                print("alphadraw: rdsrc=%p rdmask=%p rddst=%p calc=%p wrdst=%p\n",
       -                        rdsrc, rdmask, rddst, calc, wrdst);
       -        for(y=starty; y!=endy; y+=dir, srcy+=dir, masky+=dir, dsty+=dir){
       -                clipy(src, &srcy);
       -                clipy(dst, &dsty);
       -                clipy(mask, &masky);
       -
       -                bsrc = rdsrc(&spar, spar.bufbase, srcy);
       -DBG print("[");
       -                bmask = rdmask(&mpar, mpar.bufbase, masky);
       -DBG print("]\n");
       -                bdst = rddst(&dpar, dpar.bufbase, dsty);
       -DBG                dumpbuf("src", bsrc, dx);
       -DBG                dumpbuf("mask", bmask, dx);
       -DBG                dumpbuf("dst", bdst, dx);
       -                bdst = calc(bdst, bsrc, bmask, dx, isgrey, op);
       -DBG                dumpbuf("bdst", bdst, dx);
       -                wrdst(&dpar, dpar.bytermin+dsty*dpar.bwidth, bdst);
       -        }
       -
       -        return 1;
       -}
       -#undef DBG
       -
       -static Buffer
       -alphacalc0(Buffer bdst, Buffer b1, Buffer b2, int dx, int grey, int op)
       -{
       -        USED(grey);
       -        USED(op);
       -        memset(bdst.rgba, 0, dx*bdst.delta);
       -        return bdst;
       -}
       -
       -static Buffer
       -alphacalc14(Buffer bdst, Buffer bsrc, Buffer bmask, int dx, int grey, int op)
       -{
       -        Buffer obdst;
       -        int fd, sadelta;
       -        int i, sa, ma, q;
       -        u32int s, t;
       -
       -        obdst = bdst;
       -        sadelta = bsrc.alpha == &ones ? 0 : bsrc.delta;
       -        q = bsrc.delta == 4 && bdst.delta == 4;
       -
       -        for(i=0; i<dx; i++){
       -                sa = *bsrc.alpha;
       -                ma = *bmask.alpha;
       -                fd = MUL(sa, ma, t);
       -                if(op == DoutS)
       -                        fd = 255-fd;
       -
       -                if(grey){
       -                        *bdst.grey = MUL(fd, *bdst.grey, t);
       -                        bsrc.grey += bsrc.delta;
       -                        bdst.grey += bdst.delta;
       -                }else{
       -                        if(q){
       -                                *bdst.rgba = MUL0123(fd, *bdst.rgba, s, t);
       -                                bsrc.rgba++;
       -                                bdst.rgba++;
       -                                bsrc.alpha += sadelta;
       -                                bmask.alpha += bmask.delta;
       -                                continue;
       -                        }
       -                        *bdst.red = MUL(fd, *bdst.red, t);
       -                        *bdst.grn = MUL(fd, *bdst.grn, t);
       -                        *bdst.blu = MUL(fd, *bdst.blu, t);
       -                        bsrc.red += bsrc.delta;
       -                        bsrc.blu += bsrc.delta;
       -                        bsrc.grn += bsrc.delta;
       -                        bdst.red += bdst.delta;
       -                        bdst.blu += bdst.delta;
       -                        bdst.grn += bdst.delta;
       -                }
       -                if(bdst.alpha != &ones){
       -                        *bdst.alpha = MUL(fd, *bdst.alpha, t);
       -                        bdst.alpha += bdst.delta;
       -                }
       -                bmask.alpha += bmask.delta;
       -                bsrc.alpha += sadelta;
       -        }
       -        return obdst;
       -}
       -
       -static Buffer
       -alphacalc2810(Buffer bdst, Buffer bsrc, Buffer bmask, int dx, int grey, int op)
       -{
       -        Buffer obdst;
       -        int fs, sadelta;
       -        int i, ma, da, q;
       -        u32int s, t;
       -
       -        obdst = bdst;
       -        sadelta = bsrc.alpha == &ones ? 0 : bsrc.delta;
       -        q = bsrc.delta == 4 && bdst.delta == 4;
       -
       -        for(i=0; i<dx; i++){
       -                ma = *bmask.alpha;
       -                da = *bdst.alpha;
       -                if(op == SoutD)
       -                        da = 255-da;
       -                fs = ma;
       -                if(op != S)
       -                        fs = MUL(fs, da, t);
       -
       -                if(grey){
       -                        *bdst.grey = MUL(fs, *bsrc.grey, t);
       -                        bsrc.grey += bsrc.delta;
       -                        bdst.grey += bdst.delta;
       -                }else{
       -                        if(q){
       -                                *bdst.rgba = MUL0123(fs, *bsrc.rgba, s, t);
       -                                bsrc.rgba++;
       -                                bdst.rgba++;
       -                                bmask.alpha += bmask.delta;
       -                                bdst.alpha += bdst.delta;
       -                                continue;
       -                        }
       -                        *bdst.red = MUL(fs, *bsrc.red, t);
       -                        *bdst.grn = MUL(fs, *bsrc.grn, t);
       -                        *bdst.blu = MUL(fs, *bsrc.blu, t);
       -                        bsrc.red += bsrc.delta;
       -                        bsrc.blu += bsrc.delta;
       -                        bsrc.grn += bsrc.delta;
       -                        bdst.red += bdst.delta;
       -                        bdst.blu += bdst.delta;
       -                        bdst.grn += bdst.delta;
       -                }
       -                if(bdst.alpha != &ones){
       -                        *bdst.alpha = MUL(fs, *bsrc.alpha, t);
       -                        bdst.alpha += bdst.delta;
       -                }
       -                bmask.alpha += bmask.delta;
       -                bsrc.alpha += sadelta;
       -        }
       -        return obdst;
       -}
       -
       -static Buffer
       -alphacalc3679(Buffer bdst, Buffer bsrc, Buffer bmask, int dx, int grey, int op)
       -{
       -        Buffer obdst;
       -        int fs, fd, sadelta;
       -        int i, sa, ma, da, q;
       -        u32int s, t, u, v;
       -
       -        obdst = bdst;
       -        sadelta = bsrc.alpha == &ones ? 0 : bsrc.delta;
       -        q = bsrc.delta == 4 && bdst.delta == 4;
       -
       -        for(i=0; i<dx; i++){
       -                sa = *bsrc.alpha;
       -                ma = *bmask.alpha;
       -                da = *bdst.alpha;
       -                if(op == SatopD)
       -                        fs = MUL(ma, da, t);
       -                else
       -                        fs = MUL(ma, 255-da, t);
       -                if(op == DoverS)
       -                        fd = 255;
       -                else{
       -                        fd = MUL(sa, ma, t);
       -                        if(op != DatopS)
       -                                fd = 255-fd;
       -                }
       -
       -                if(grey){
       -                        *bdst.grey = MUL(fs, *bsrc.grey, s)+MUL(fd, *bdst.grey, t);
       -                        bsrc.grey += bsrc.delta;
       -                        bdst.grey += bdst.delta;
       -                }else{
       -                        if(q){
       -                                *bdst.rgba = MUL0123(fs, *bsrc.rgba, s, t)+MUL0123(fd, *bdst.rgba, u, v);
       -                                bsrc.rgba++;
       -                                bdst.rgba++;
       -                                bsrc.alpha += sadelta;
       -                                bmask.alpha += bmask.delta;
       -                                bdst.alpha += bdst.delta;
       -                                continue;
       -                        }
       -                        *bdst.red = MUL(fs, *bsrc.red, s)+MUL(fd, *bdst.red, t);
       -                        *bdst.grn = MUL(fs, *bsrc.grn, s)+MUL(fd, *bdst.grn, t);
       -                        *bdst.blu = MUL(fs, *bsrc.blu, s)+MUL(fd, *bdst.blu, t);
       -                        bsrc.red += bsrc.delta;
       -                        bsrc.blu += bsrc.delta;
       -                        bsrc.grn += bsrc.delta;
       -                        bdst.red += bdst.delta;
       -                        bdst.blu += bdst.delta;
       -                        bdst.grn += bdst.delta;
       -                }
       -                if(bdst.alpha != &ones){
       -                        *bdst.alpha = MUL(fs, sa, s)+MUL(fd, da, t);
       -                        bdst.alpha += bdst.delta;
       -                }
       -                bmask.alpha += bmask.delta;
       -                bsrc.alpha += sadelta;
       -        }
       -        return obdst;
       -}
       -
       -static Buffer
       -alphacalc5(Buffer bdst, Buffer b1, Buffer b2, int dx, int grey, int op)
       -{
       -        USED(dx);
       -        USED(grey);
       -        USED(op);
       -        return bdst;
       -}
       -
       -static Buffer
       -alphacalc11(Buffer bdst, Buffer bsrc, Buffer bmask, int dx, int grey, int op)
       -{
       -        Buffer obdst;
       -        int fd, sadelta;
       -        int i, sa, ma, q;
       -        u32int s, t, u, v;
       -
       -        USED(op);
       -        obdst = bdst;
       -        sadelta = bsrc.alpha == &ones ? 0 : bsrc.delta;
       -        q = bsrc.delta == 4 && bdst.delta == 4;
       -
       -        for(i=0; i<dx; i++){
       -                sa = *bsrc.alpha;
       -                ma = *bmask.alpha;
       -                fd = 255-MUL(sa, ma, t);
       -
       -                if(grey){
       -                        *bdst.grey = MUL(ma, *bsrc.grey, s)+MUL(fd, *bdst.grey, t);
       -                        bsrc.grey += bsrc.delta;
       -                        bdst.grey += bdst.delta;
       -                }else{
       -                        if(q){
       -                                *bdst.rgba = MUL0123(ma, *bsrc.rgba, s, t)+MUL0123(fd, *bdst.rgba, u, v);
       -                                bsrc.rgba++;
       -                                bdst.rgba++;
       -                                bsrc.alpha += sadelta;
       -                                bmask.alpha += bmask.delta;
       -                                continue;
       -                        }
       -                        *bdst.red = MUL(ma, *bsrc.red, s)+MUL(fd, *bdst.red, t);
       -                        *bdst.grn = MUL(ma, *bsrc.grn, s)+MUL(fd, *bdst.grn, t);
       -                        *bdst.blu = MUL(ma, *bsrc.blu, s)+MUL(fd, *bdst.blu, t);
       -                        bsrc.red += bsrc.delta;
       -                        bsrc.blu += bsrc.delta;
       -                        bsrc.grn += bsrc.delta;
       -                        bdst.red += bdst.delta;
       -                        bdst.blu += bdst.delta;
       -                        bdst.grn += bdst.delta;
       -                }
       -                if(bdst.alpha != &ones){
       -                        *bdst.alpha = MUL(ma, sa, s)+MUL(fd, *bdst.alpha, t);
       -                        bdst.alpha += bdst.delta;
       -                }
       -                bmask.alpha += bmask.delta;
       -                bsrc.alpha += sadelta;
       -        }
       -        return obdst;
       -}
       -
       -/*
       -not used yet
       -source and mask alpha 1
       -static Buffer
       -alphacalcS0(Buffer bdst, Buffer bsrc, Buffer bmask, int dx, int grey, int op)
       -{
       -        Buffer obdst;
       -        int i;
       -
       -        USED(op);
       -        obdst = bdst;
       -        if(bsrc.delta == bdst.delta){
       -                memmove(bdst.rgba, bsrc.rgba, dx*bdst.delta);
       -                return obdst;
       -        }
       -        for(i=0; i<dx; i++){
       -                if(grey){
       -                        *bdst.grey = *bsrc.grey;
       -                        bsrc.grey += bsrc.delta;
       -                        bdst.grey += bdst.delta;
       -                }else{
       -                        *bdst.red = *bsrc.red;
       -                        *bdst.grn = *bsrc.grn;
       -                        *bdst.blu = *bsrc.blu;
       -                        bsrc.red += bsrc.delta;
       -                        bsrc.blu += bsrc.delta;
       -                        bsrc.grn += bsrc.delta;
       -                        bdst.red += bdst.delta;
       -                        bdst.blu += bdst.delta;
       -                        bdst.grn += bdst.delta;
       -                }
       -                if(bdst.alpha != &ones){
       -                        *bdst.alpha = 255;
       -                        bdst.alpha += bdst.delta;
       -                }
       -        }
       -        return obdst;
       -}
       -*/
       -
       -/* source alpha 1 */
       -static Buffer
       -alphacalcS(Buffer bdst, Buffer bsrc, Buffer bmask, int dx, int grey, int op)
       -{
       -        Buffer obdst;
       -        int fd;
       -        int i, ma;
       -        u32int s, t;
       -
       -        USED(op);
       -        obdst = bdst;
       -
       -        for(i=0; i<dx; i++){
       -                ma = *bmask.alpha;
       -                fd = 255-ma;
       -
       -                if(grey){
       -                        *bdst.grey = MUL(ma, *bsrc.grey, s)+MUL(fd, *bdst.grey, t);
       -                        bsrc.grey += bsrc.delta;
       -                        bdst.grey += bdst.delta;
       -                }else{
       -                        *bdst.red = MUL(ma, *bsrc.red, s)+MUL(fd, *bdst.red, t);
       -                        *bdst.grn = MUL(ma, *bsrc.grn, s)+MUL(fd, *bdst.grn, t);
       -                        *bdst.blu = MUL(ma, *bsrc.blu, s)+MUL(fd, *bdst.blu, t);
       -                        bsrc.red += bsrc.delta;
       -                        bsrc.blu += bsrc.delta;
       -                        bsrc.grn += bsrc.delta;
       -                        bdst.red += bdst.delta;
       -                        bdst.blu += bdst.delta;
       -                        bdst.grn += bdst.delta;
       -                }
       -                if(bdst.alpha != &ones){
       -                        *bdst.alpha = ma+MUL(fd, *bdst.alpha, t);
       -                        bdst.alpha += bdst.delta;
       -                }
       -                bmask.alpha += bmask.delta;
       -        }
       -        return obdst;
       -}
       -
       -static Buffer
       -boolcalc14(Buffer bdst, Buffer b1, Buffer bmask, int dx, int grey, int op)
       -{
       -        Buffer obdst;
       -        int i, ma, zero;
       -
       -        obdst = bdst;
       -
       -        for(i=0; i<dx; i++){
       -                ma = *bmask.alpha;
       -                zero = ma ? op == DoutS : op == DinS;
       -
       -                if(grey){
       -                        if(zero)
       -                                *bdst.grey = 0;
       -                        bdst.grey += bdst.delta;
       -                }else{
       -                        if(zero)
       -                                *bdst.red = *bdst.grn = *bdst.blu = 0;
       -                        bdst.red += bdst.delta;
       -                        bdst.blu += bdst.delta;
       -                        bdst.grn += bdst.delta;
       -                }
       -                bmask.alpha += bmask.delta;
       -                if(bdst.alpha != &ones){
       -                        if(zero)
       -                                *bdst.alpha = 0;
       -                        bdst.alpha += bdst.delta;
       -                }
       -        }
       -        return obdst;
       -}
       -
       -static Buffer
       -boolcalc236789(Buffer bdst, Buffer bsrc, Buffer bmask, int dx, int grey, int op)
       -{
       -        Buffer obdst;
       -        int fs, fd;
       -        int i, ma, da, zero;
       -        u32int s, t;
       -
       -        obdst = bdst;
       -        zero = !(op&1);
       -
       -        for(i=0; i<dx; i++){
       -                ma = *bmask.alpha;
       -                da = *bdst.alpha;
       -                fs = da;
       -                if(op&2)
       -                        fs = 255-da;
       -                fd = 0;
       -                if(op&4)
       -                        fd = 255;
       -
       -                if(grey){
       -                        if(ma)
       -                                *bdst.grey = MUL(fs, *bsrc.grey, s)+MUL(fd, *bdst.grey, t);
       -                        else if(zero)
       -                                *bdst.grey = 0;
       -                        bsrc.grey += bsrc.delta;
       -                        bdst.grey += bdst.delta;
       -                }else{
       -                        if(ma){
       -                                *bdst.red = MUL(fs, *bsrc.red, s)+MUL(fd, *bdst.red, t);
       -                                *bdst.grn = MUL(fs, *bsrc.grn, s)+MUL(fd, *bdst.grn, t);
       -                                *bdst.blu = MUL(fs, *bsrc.blu, s)+MUL(fd, *bdst.blu, t);
       -                        }
       -                        else if(zero)
       -                                *bdst.red = *bdst.grn = *bdst.blu = 0;
       -                        bsrc.red += bsrc.delta;
       -                        bsrc.blu += bsrc.delta;
       -                        bsrc.grn += bsrc.delta;
       -                        bdst.red += bdst.delta;
       -                        bdst.blu += bdst.delta;
       -                        bdst.grn += bdst.delta;
       -                }
       -                bmask.alpha += bmask.delta;
       -                if(bdst.alpha != &ones){
       -                        if(ma)
       -                                *bdst.alpha = fs+MUL(fd, da, t);
       -                        else if(zero)
       -                                *bdst.alpha = 0;
       -                        bdst.alpha += bdst.delta;
       -                }
       -        }
       -        return obdst;
       -}
       -
       -static Buffer
       -boolcalc1011(Buffer bdst, Buffer bsrc, Buffer bmask, int dx, int grey, int op)
       -{
       -        Buffer obdst;
       -        int i, ma, zero;
       -
       -        obdst = bdst;
       -        zero = !(op&1);
       -
       -        for(i=0; i<dx; i++){
       -                ma = *bmask.alpha;
       -
       -                if(grey){
       -                        if(ma)
       -                                *bdst.grey = *bsrc.grey;
       -                        else if(zero)
       -                                *bdst.grey = 0;
       -                        bsrc.grey += bsrc.delta;
       -                        bdst.grey += bdst.delta;
       -                }else{
       -                        if(ma){
       -                                *bdst.red = *bsrc.red;
       -                                *bdst.grn = *bsrc.grn;
       -                                *bdst.blu = *bsrc.blu;
       -                        }
       -                        else if(zero)
       -                                *bdst.red = *bdst.grn = *bdst.blu = 0;
       -                        bsrc.red += bsrc.delta;
       -                        bsrc.blu += bsrc.delta;
       -                        bsrc.grn += bsrc.delta;
       -                        bdst.red += bdst.delta;
       -                        bdst.blu += bdst.delta;
       -                        bdst.grn += bdst.delta;
       -                }
       -                bmask.alpha += bmask.delta;
       -                if(bdst.alpha != &ones){
       -                        if(ma)
       -                                *bdst.alpha = 255;
       -                        else if(zero)
       -                                *bdst.alpha = 0;
       -                        bdst.alpha += bdst.delta;
       -                }
       -        }
       -        return obdst;
       -}
       -/*
       - * Replicated cached scan line read.  Call the function listed in the Param,
       - * but cache the result so that for replicated images we only do the work once.
       - */
       -static Buffer
       -replread(Param *p, uchar *s, int y)
       -{
       -        Buffer *b;
       -
       -        USED(s);
       -        b = &p->bcache[y];
       -        if((p->bfilled & (1<<y)) == 0){
       -                p->bfilled |= 1<<y;
       -                *b = p->replcall(p, p->bufbase+y*p->bufdelta, y);
       -        }
       -        return *b;
       -}
       -
       -/*
       - * Alpha reading function that simply relabels the grey pointer.
       - */
       -static Buffer
       -greymaskread(Param *p, uchar *buf, int y)
       -{
       -        Buffer b;
       -
       -        b = p->greymaskcall(p, buf, y);
       -        b.alpha = b.grey;
       -        return b;
       -}
       -
       -#define DBG if(0)
       -static Buffer
       -readnbit(Param *p, uchar *buf, int y)
       -{
       -        Buffer b;
       -        Memimage *img;
       -        uchar *repl, *r, *w, *ow, bits;
       -        int i, n, sh, depth, x, dx, npack, nbits;
       -
       -        memset(&b, 0, sizeof b);
       -        b.rgba = (u32int*)buf;
       -        b.grey = w = buf;
       -        b.red = b.blu = b.grn = w;
       -        b.alpha = &ones;
       -        b.delta = 1;
       -
       -        dx = p->dx;
       -        img = p->img;
       -        depth = img->depth;
       -        repl = &replbit[depth][0];
       -        npack = 8/depth;
       -        sh = 8-depth;
       -
       -        /* copy from p->r.min.x until end of repl rectangle */
       -        x = p->r.min.x;
       -        n = dx;
       -        if(n > p->img->r.max.x - x)
       -                n = p->img->r.max.x - x;
       -
       -        r = p->bytermin + y*p->bwidth;
       -DBG print("readnbit dx %d %p=%p+%d*%d, *r=%d fetch %d ", dx, r, p->bytermin, y, p->bwidth, *r, n);
       -        bits = *r++;
       -        nbits = 8;
       -        if(i=x&(npack-1)){
       -DBG print("throwaway %d...", i);
       -                bits <<= depth*i;
       -                nbits -= depth*i;
       -        }
       -        for(i=0; i<n; i++){
       -                if(nbits == 0){
       -DBG print("(%.2ux)...", *r);
       -                        bits = *r++;
       -                        nbits = 8;
       -                }
       -                *w++ = repl[bits>>sh];
       -DBG print("bit %x...", repl[bits>>sh]);
       -                bits <<= depth;
       -                nbits -= depth;
       -        }
       -        dx -= n;
       -        if(dx == 0)
       -                return b;
       -
       -        assert(x+i == p->img->r.max.x);
       -
       -        /* copy from beginning of repl rectangle until where we were before. */
       -        x = p->img->r.min.x;
       -        n = dx;
       -        if(n > p->r.min.x - x)
       -                n = p->r.min.x - x;
       -
       -        r = p->bytey0s + y*p->bwidth;
       -DBG print("x=%d r=%p...", x, r);
       -        bits = *r++;
       -        nbits = 8;
       -        if(i=x&(npack-1)){
       -                bits <<= depth*i;
       -                nbits -= depth*i;
       -        }
       -DBG print("nbits=%d...", nbits);
       -        for(i=0; i<n; i++){
       -                if(nbits == 0){
       -                        bits = *r++;
       -                        nbits = 8;
       -                }
       -                *w++ = repl[bits>>sh];
       -DBG print("bit %x...", repl[bits>>sh]);
       -                bits <<= depth;
       -                nbits -= depth;
       -DBG print("bits %x nbits %d...", bits, nbits);
       -        }
       -        dx -= n;
       -        if(dx == 0)
       -                return b;
       -
       -        assert(dx > 0);
       -        /* now we have exactly one full scan line: just replicate the buffer itself until we are done */
       -        ow = buf;
       -        while(dx--)
       -                *w++ = *ow++;
       -
       -        return b;
       -}
       -#undef DBG
       -
       -#define DBG if(0)
       -static void
       -writenbit(Param *p, uchar *w, Buffer src)
       -{
       -        uchar *r;
       -        u32int bits;
       -        int i, sh, depth, npack, nbits, x, ex;
       -
       -        assert(src.grey != nil && src.delta == 1);
       -
       -        x = p->r.min.x;
       -        ex = x+p->dx;
       -        depth = p->img->depth;
       -        npack = 8/depth;
       -
       -        i=x&(npack-1);
       -        bits = i ? (*w >> (8-depth*i)) : 0;
       -        nbits = depth*i;
       -        sh = 8-depth;
       -        r = src.grey;
       -
       -        for(; x<ex; x++){
       -                bits <<= depth;
       -DBG print(" %x", *r);
       -                bits |= (*r++ >> sh);
       -                nbits += depth;
       -                if(nbits == 8){
       -                        *w++ = bits;
       -                        nbits = 0;
       -                }
       -        }
       -
       -        if(nbits){
       -                sh = 8-nbits;
       -                bits <<= sh;
       -                bits |= *w & ((1<<sh)-1);
       -                *w = bits;
       -        }
       -DBG print("\n");
       -        return;
       -}
       -#undef DBG
       -
       -static Buffer
       -readcmap(Param *p, uchar *buf, int y)
       -{
       -        Buffer b;
       -        int a, convgrey, copyalpha, dx, i, m;
       -        uchar *q, *cmap, *begin, *end, *r, *w;
       -
       -        memset(&b, 0, sizeof b);
       -        begin = p->bytey0s + y*p->bwidth;
       -        r = p->bytermin + y*p->bwidth;
       -        end = p->bytey0e + y*p->bwidth;
       -        cmap = p->img->cmap->cmap2rgb;
       -        convgrey = p->convgrey;
       -        copyalpha = (p->img->flags&Falpha) ? 1 : 0;
       -
       -        w = buf;
       -        dx = p->dx;
       -        if(copyalpha){
       -                b.alpha = buf++;
       -                a = p->img->shift[CAlpha]/8;
       -                m = p->img->shift[CMap]/8;
       -                for(i=0; i<dx; i++){
       -                        *w++ = r[a];
       -                        q = cmap+r[m]*3;
       -                        r += 2;
       -                        if(r == end)
       -                                r = begin;
       -                        if(convgrey){
       -                                *w++ = RGB2K(q[0], q[1], q[2]);
       -                        }else{
       -                                *w++ = q[2];        /* blue */
       -                                *w++ = q[1];        /* green */
       -                                *w++ = q[0];        /* red */
       -                        }
       -                }
       -        }else{
       -                b.alpha = &ones;
       -                for(i=0; i<dx; i++){
       -                        q = cmap+*r++*3;
       -                        if(r == end)
       -                                r = begin;
       -                        if(convgrey){
       -                                *w++ = RGB2K(q[0], q[1], q[2]);
       -                        }else{
       -                                *w++ = q[2];        /* blue */
       -                                *w++ = q[1];        /* green */
       -                                *w++ = q[0];        /* red */
       -                        }
       -                }
       -        }
       -
       -        b.rgba = (u32int*)(buf-copyalpha);
       -
       -        if(convgrey){
       -                b.grey = buf;
       -                b.red = b.blu = b.grn = buf;
       -                b.delta = 1+copyalpha;
       -        }else{
       -                b.blu = buf;
       -                b.grn = buf+1;
       -                b.red = buf+2;
       -                b.grey = nil;
       -                b.delta = 3+copyalpha;
       -        }
       -        return b;
       -}
       -
       -static void
       -writecmap(Param *p, uchar *w, Buffer src)
       -{
       -        uchar *cmap, *red, *grn, *blu;
       -        int i, dx, delta;
       -
       -        cmap = p->img->cmap->rgb2cmap;
       -        
       -        delta = src.delta;
       -        red= src.red;
       -        grn = src.grn;
       -        blu = src.blu;
       -
       -        dx = p->dx;
       -        for(i=0; i<dx; i++, red+=delta, grn+=delta, blu+=delta)
       -                *w++ = cmap[(*red>>4)*256+(*grn>>4)*16+(*blu>>4)];
       -}
       -
       -#define DBG if(drawdebug)
       -static Buffer
       -readbyte(Param *p, uchar *buf, int y)
       -{
       -        Buffer b;
       -        Memimage *img;
       -        int dx, isgrey, convgrey, alphaonly, copyalpha, i, nb;
       -        uchar *begin, *end, *r, *w, *rrepl, *grepl, *brepl, *arepl, *krepl;
       -        uchar ured, ugrn, ublu;
       -        u32int u;
       -
       -        img = p->img;
       -        begin = p->bytey0s + y*p->bwidth;
       -        r = p->bytermin + y*p->bwidth;
       -        end = p->bytey0e + y*p->bwidth;
       -
       -        w = buf;
       -        dx = p->dx;
       -        nb = img->depth/8;
       -
       -        convgrey = p->convgrey;        /* convert rgb to grey */
       -        isgrey = img->flags&Fgrey;
       -        alphaonly = p->alphaonly;
       -        copyalpha = (img->flags&Falpha) ? 1 : 0;
       -
       -        /* if we can, avoid processing everything */
       -        if(!(img->flags&Frepl) && !convgrey && (img->flags&Fbytes)){
       -                memset(&b, 0, sizeof b);
       -                if(p->needbuf){
       -                        memmove(buf, r, dx*nb);
       -                        r = buf;
       -                }
       -                b.rgba = (u32int*)r;
       -                if(copyalpha)
       -                        b.alpha = r+img->shift[CAlpha]/8;
       -                else
       -                        b.alpha = &ones;
       -                if(isgrey){
       -                        b.grey = r+img->shift[CGrey]/8;
       -                        b.red = b.grn = b.blu = b.grey;
       -                }else{
       -                        b.red = r+img->shift[CRed]/8;
       -                        b.grn = r+img->shift[CGreen]/8;
       -                        b.blu = r+img->shift[CBlue]/8;
       -                }
       -                b.delta = nb;
       -                return b;
       -        }
       -
       -        rrepl = replbit[img->nbits[CRed]];
       -        grepl = replbit[img->nbits[CGreen]];
       -        brepl = replbit[img->nbits[CBlue]];
       -        arepl = replbit[img->nbits[CAlpha]];
       -        krepl = replbit[img->nbits[CGrey]];
       -
       -        for(i=0; i<dx; i++){
       -                u = r[0] | (r[1]<<8) | (r[2]<<16) | (r[3]<<24);
       -                if(copyalpha)
       -                        *w++ = arepl[(u>>img->shift[CAlpha]) & img->mask[CAlpha]];
       -
       -                if(isgrey)
       -                        *w++ = krepl[(u >> img->shift[CGrey]) & img->mask[CGrey]];
       -                else if(!alphaonly){
       -                        ured = rrepl[(u >> img->shift[CRed]) & img->mask[CRed]];
       -                        ugrn = grepl[(u >> img->shift[CGreen]) & img->mask[CGreen]];
       -                        ublu = brepl[(u >> img->shift[CBlue]) & img->mask[CBlue]];
       -                        if(convgrey){
       -                                *w++ = RGB2K(ured, ugrn, ublu);
       -                        }else{
       -                                *w++ = brepl[(u >> img->shift[CBlue]) & img->mask[CBlue]];
       -                                *w++ = grepl[(u >> img->shift[CGreen]) & img->mask[CGreen]];
       -                                *w++ = rrepl[(u >> img->shift[CRed]) & img->mask[CRed]];
       -                        }
       -                }
       -                r += nb;
       -                if(r == end)
       -                        r = begin;
       -        }
       -        
       -        b.alpha = copyalpha ? buf : &ones;
       -        b.rgba = (u32int*)buf;
       -        if(alphaonly){
       -                b.red = b.grn = b.blu = b.grey = nil;
       -                if(!copyalpha)
       -                        b.rgba = nil;
       -                b.delta = 1;
       -        }else if(isgrey || convgrey){
       -                b.grey = buf+copyalpha;
       -                b.red = b.grn = b.blu = buf+copyalpha;
       -                b.delta = copyalpha+1;
       -        }else{
       -                b.blu = buf+copyalpha;
       -                b.grn = buf+copyalpha+1;
       -                b.grey = nil;
       -                b.red = buf+copyalpha+2;
       -                b.delta = copyalpha+3;
       -        }
       -        return b;
       -}
       -#undef DBG
       -
       -#define DBG if(drawdebug)
       -static void
       -writebyte(Param *p, uchar *w, Buffer src)
       -{
       -        Memimage *img;
       -        int i, isalpha, isgrey, nb, delta, dx, adelta;
       -        uchar ff, *red, *grn, *blu, *grey, *alpha;
       -        u32int u, mask;
       -
       -        img = p->img;
       -
       -        red = src.red;
       -        grn = src.grn;
       -        blu = src.blu;
       -        alpha = src.alpha;
       -        delta = src.delta;
       -        grey = src.grey;
       -        dx = p->dx;
       -
       -        nb = img->depth/8;
       -        mask = (nb==4) ? 0 : ~((1<<img->depth)-1);
       -
       -        isalpha = img->flags&Falpha;
       -        isgrey = img->flags&Fgrey;
       -        adelta = src.delta;
       -
       -        if(isalpha && (alpha == nil || alpha == &ones)){
       -                ff = 0xFF;
       -                alpha = &ff;
       -                adelta = 0;
       -        }
       -
       -        for(i=0; i<dx; i++){
       -                u = w[0] | (w[1]<<8) | (w[2]<<16) | (w[3]<<24);
       -DBG print("u %.8lux...", u);
       -                u &= mask;
       -DBG print("&mask %.8lux...", u);
       -                if(isgrey){
       -                        u |= ((*grey >> (8-img->nbits[CGrey])) & img->mask[CGrey]) << img->shift[CGrey];
       -DBG print("|grey %.8lux...", u);
       -                        grey += delta;
       -                }else{
       -                        u |= ((*red >> (8-img->nbits[CRed])) & img->mask[CRed]) << img->shift[CRed];
       -                        u |= ((*grn >> (8-img->nbits[CGreen])) & img->mask[CGreen]) << img->shift[CGreen];
       -                        u |= ((*blu >> (8-img->nbits[CBlue])) & img->mask[CBlue]) << img->shift[CBlue];
       -                        red += delta;
       -                        grn += delta;
       -                        blu += delta;
       -DBG print("|rgb %.8lux...", u);
       -                }
       -
       -                if(isalpha){
       -                        u |= ((*alpha >> (8-img->nbits[CAlpha])) & img->mask[CAlpha]) << img->shift[CAlpha];
       -                        alpha += adelta;
       -DBG print("|alpha %.8lux...", u);
       -                }
       -
       -                w[0] = u;
       -                w[1] = u>>8;
       -                w[2] = u>>16;
       -                w[3] = u>>24;
       -DBG print("write back %.8lux...", u);
       -                w += nb;
       -        }
       -}
       -#undef DBG
       -
       -static Readfn*
       -readfn(Memimage *img)
       -{
       -        if(img->depth < 8)
       -                return readnbit;
       -        if(img->nbits[CMap] == 8)
       -                return readcmap;
       -        return readbyte;
       -}
       -
       -static Readfn*
       -readalphafn(Memimage *m)
       -{
       -        USED(m);
       -        return readbyte;
       -}
       -
       -static Writefn*
       -writefn(Memimage *img)
       -{
       -        if(img->depth < 8)
       -                return writenbit;
       -        if(img->chan == CMAP8)
       -                return writecmap;
       -        return writebyte;
       -}
       -
       -static void
       -nullwrite(Param *p, uchar *s, Buffer b)
       -{
       -        USED(p);
       -        USED(s);
       -}
       -
       -static Buffer
       -readptr(Param *p, uchar *s, int y)
       -{
       -        Buffer b;
       -        uchar *q;
       -
       -        USED(s);
       -        memset(&b, 0, sizeof b);
       -        q = p->bytermin + y*p->bwidth;
       -        b.red = q;        /* ptr to data */
       -        b.grn = b.blu = b.grey = b.alpha = nil;
       -        b.rgba = (u32int*)q;
       -        b.delta = p->img->depth/8;
       -        return b;
       -}
       -
       -static Buffer
       -boolmemmove(Buffer bdst, Buffer bsrc, Buffer b1, int dx, int i, int o)
       -{
       -        USED(i);
       -        USED(o);
       -        memmove(bdst.red, bsrc.red, dx*bdst.delta);
       -        return bdst;
       -}
       -
       -static Buffer
       -boolcopy8(Buffer bdst, Buffer bsrc, Buffer bmask, int dx, int i, int o)
       -{
       -        uchar *m, *r, *w, *ew;
       -
       -        USED(i);
       -        USED(o);
       -        m = bmask.grey;
       -        w = bdst.red;
       -        r = bsrc.red;
       -        ew = w+dx;
       -        for(; w < ew; w++,r++)
       -                if(*m++)
       -                        *w = *r;
       -        return bdst;        /* not used */
       -}
       -
       -static Buffer
       -boolcopy16(Buffer bdst, Buffer bsrc, Buffer bmask, int dx, int i, int o)
       -{
       -        uchar *m;
       -        ushort *r, *w, *ew;
       -
       -        USED(i);
       -        USED(o);
       -        m = bmask.grey;
       -        w = (ushort*)bdst.red;
       -        r = (ushort*)bsrc.red;
       -        ew = w+dx;
       -        for(; w < ew; w++,r++)
       -                if(*m++)
       -                        *w = *r;
       -        return bdst;        /* not used */
       -}
       -
       -static Buffer
       -boolcopy24(Buffer bdst, Buffer bsrc, Buffer bmask, int dx, int i, int o)
       -{
       -        uchar *m;
       -        uchar *r, *w, *ew;
       -
       -        USED(i);
       -        USED(o);
       -        m = bmask.grey;
       -        w = bdst.red;
       -        r = bsrc.red;
       -        ew = w+dx*3;
       -        while(w < ew){
       -                if(*m++){
       -                        *w++ = *r++;
       -                        *w++ = *r++;
       -                        *w++ = *r++;
       -                }else{
       -                        w += 3;
       -                        r += 3;
       -                }
       -        }
       -        return bdst;        /* not used */
       -}
       -
       -static Buffer
       -boolcopy32(Buffer bdst, Buffer bsrc, Buffer bmask, int dx, int i, int o)
       -{
       -        uchar *m;
       -        u32int *r, *w, *ew;
       -
       -        USED(i);
       -        USED(o);
       -        m = bmask.grey;
       -        w = (u32int*)bdst.red;
       -        r = (u32int*)bsrc.red;
       -        ew = w+dx;
       -        for(; w < ew; w++,r++)
       -                if(*m++)
       -                        *w = *r;
       -        return bdst;        /* not used */
       -}
       -
       -static Buffer
       -genconv(Param *p, uchar *buf, int y)
       -{
       -        Buffer b;
       -        int nb;
       -        uchar *r, *w, *ew;
       -
       -        /* read from source into RGB format in convbuf */
       -        b = p->convreadcall(p, p->convbuf, y);
       -
       -        /* write RGB format into dst format in buf */
       -        p->convwritecall(p->convdpar, buf, b);
       -
       -        if(p->convdx){
       -                nb = p->convdpar->img->depth/8;
       -                r = buf;
       -                w = buf+nb*p->dx;
       -                ew = buf+nb*p->convdx;
       -                while(w<ew)
       -                        *w++ = *r++;
       -        }
       -
       -        b.red = buf;
       -        b.blu = b.grn = b.grey = b.alpha = nil;
       -        b.rgba = (u32int*)buf;
       -        b.delta = 0;
       -        
       -        return b;
       -}
       -
       -static Readfn*
       -convfn(Memimage *dst, Param *dpar, Memimage *src, Param *spar)
       -{
       -        if(dst->chan == src->chan && !(src->flags&Frepl)){
       -/*if(drawdebug) iprint("readptr..."); */
       -                return readptr;
       -        }
       -
       -        if(dst->chan==CMAP8 && (src->chan==GREY1||src->chan==GREY2||src->chan==GREY4)){
       -                /* cheat because we know the replicated value is exactly the color map entry. */
       -/*if(drawdebug) iprint("Readnbit..."); */
       -                return readnbit;
       -        }
       -
       -        spar->convreadcall = readfn(src);
       -        spar->convwritecall = writefn(dst);
       -        spar->convdpar = dpar;
       -
       -        /* allocate a conversion buffer */
       -        spar->convbufoff = ndrawbuf;
       -        ndrawbuf += spar->dx*4;
       -
       -        if(spar->dx > Dx(spar->img->r)){
       -                spar->convdx = spar->dx;
       -                spar->dx = Dx(spar->img->r);
       -        }
       -
       -/*if(drawdebug) iprint("genconv..."); */
       -        return genconv;
       -}
       -
       -/*
       - * Do NOT call this directly.  pixelbits is a wrapper
       - * around this that fetches the bits from the X server
       - * when necessary.
       - */
       -u32int
       -_pixelbits(Memimage *i, Point pt)
       -{
       -        uchar *p;
       -        u32int val;
       -        int off, bpp, npack;
       -
       -        val = 0;
       -        p = byteaddr(i, pt);
       -        switch(bpp=i->depth){
       -        case 1:
       -        case 2:
       -        case 4:
       -                npack = 8/bpp;
       -                off = pt.x%npack;
       -                val = p[0] >> bpp*(npack-1-off);
       -                val &= (1<<bpp)-1;
       -                break;
       -        case 8:
       -                val = p[0];
       -                break;
       -        case 16:
       -                val = p[0]|(p[1]<<8);
       -                break;
       -        case 24:
       -                val = p[0]|(p[1]<<8)|(p[2]<<16);
       -                break;
       -        case 32:
       -                val = p[0]|(p[1]<<8)|(p[2]<<16)|(p[3]<<24);
       -                break;
       -        }
       -        while(bpp<32){
       -                val |= val<<bpp;
       -                bpp *= 2;
       -        }
       -        return val;
       -}
       -
       -static Calcfn*
       -boolcopyfn(Memimage *img, Memimage *mask)
       -{
       -        if(mask->flags&Frepl && Dx(mask->r)==1 && Dy(mask->r)==1 && pixelbits(mask, mask->r.min)==~0)
       -                return boolmemmove;
       -
       -        switch(img->depth){
       -        case 8:
       -                return boolcopy8;
       -        case 16:
       -                return boolcopy16;
       -        case 24:
       -                return boolcopy24;
       -        case 32:
       -                return boolcopy32;
       -        default:
       -                assert(0 /* boolcopyfn */);
       -        }
       -        return 0;
       -}
       -
       -/*
       - * Optimized draw for filling and scrolling; uses memset and memmove.
       - */
       -static void
       -memsets(void *vp, ushort val, int n)
       -{
       -        ushort *p, *ep;
       -
       -        p = vp;
       -        ep = p+n;
       -        while(p<ep)
       -                *p++ = val;
       -}
       -
       -static void
       -memsetl(void *vp, u32int val, int n)
       -{
       -        u32int *p, *ep;
       -
       -        p = vp;
       -        ep = p+n;
       -        while(p<ep)
       -                *p++ = val;
       -}
       -
       -static void
       -memset24(void *vp, u32int val, int n)
       -{
       -        uchar *p, *ep;
       -        uchar a,b,c;
       -
       -        p = vp;
       -        ep = p+3*n;
       -        a = val;
       -        b = val>>8;
       -        c = val>>16;
       -        while(p<ep){
       -                *p++ = a;
       -                *p++ = b;
       -                *p++ = c;
       -        }
       -}
       -
       -u32int
       -_imgtorgba(Memimage *img, u32int val)
       -{
       -        uchar r, g, b, a;
       -        int nb, ov, v;
       -        u32int chan;
       -        uchar *p;
       -
       -        a = 0xFF;
       -        r = g = b = 0xAA;        /* garbage */
       -        for(chan=img->chan; chan; chan>>=8){
       -                nb = NBITS(chan);
       -                ov = v = val&((1<<nb)-1);
       -                val >>= nb;
       -
       -                while(nb < 8){
       -                        v |= v<<nb;
       -                        nb *= 2;
       -                }
       -                v >>= (nb-8);
       -
       -                switch(TYPE(chan)){
       -                case CRed:
       -                        r = v;
       -                        break;
       -                case CGreen:
       -                        g = v;
       -                        break;
       -                case CBlue:
       -                        b = v;
       -                        break;
       -                case CAlpha:
       -                        a = v;
       -                        break;
       -                case CGrey:
       -                        r = g = b = v;
       -                        break;
       -                case CMap:
       -                        p = img->cmap->cmap2rgb+3*ov;
       -                        r = *p++;
       -                        g = *p++;        
       -                        b = *p;
       -                        break;
       -                }
       -        }
       -        return (r<<24)|(g<<16)|(b<<8)|a;        
       -}
       -
       -u32int
       -_rgbatoimg(Memimage *img, u32int rgba)
       -{
       -        u32int chan;
       -        int d, nb;
       -        u32int v;
       -        uchar *p, r, g, b, a, m;
       -
       -        v = 0;
       -        r = rgba>>24;
       -        g = rgba>>16;
       -        b = rgba>>8;
       -        a = rgba;
       -        d = 0;
       -        for(chan=img->chan; chan; chan>>=8){
       -                nb = NBITS(chan);
       -                switch(TYPE(chan)){
       -                case CRed:
       -                        v |= (r>>(8-nb))<<d;
       -                        break;
       -                case CGreen:
       -                        v |= (g>>(8-nb))<<d;
       -                        break;
       -                case CBlue:
       -                        v |= (b>>(8-nb))<<d;
       -                        break;
       -                case CAlpha:
       -                        v |= (a>>(8-nb))<<d;
       -                        break;
       -                case CMap:
       -                        p = img->cmap->rgb2cmap;
       -                        m = p[(r>>4)*256+(g>>4)*16+(b>>4)];
       -                        v |= (m>>(8-nb))<<d;
       -                        break;
       -                case CGrey:
       -                        m = RGB2K(r,g,b);
       -                        v |= (m>>(8-nb))<<d;
       -                        break;
       -                }
       -                d += nb;
       -        }
       -/*        print("rgba2img %.8lux = %.*lux\n", rgba, 2*d/8, v); */
       -        return v;
       -}
       -
       -#define DBG if(0)
       -static int
       -memoptdraw(Memdrawparam *par)
       -{
       -        int m, y, dy, dx, op;
       -        u32int v;
       -        Memimage *src;
       -        Memimage *dst;
       -
       -        dx = Dx(par->r);
       -        dy = Dy(par->r);
       -        src = par->src;
       -        dst = par->dst;
       -        op = par->op;
       -
       -DBG print("state %lux mval %lux dd %d\n", par->state, par->mval, dst->depth);
       -        /*
       -         * If we have an opaque mask and source is one opaque pixel we can convert to the
       -         * destination format and just replicate with memset.
       -         */
       -        m = Simplesrc|Simplemask|Fullmask;
       -        if((par->state&m)==m && (par->srgba&0xFF) == 0xFF && (op ==S || op == SoverD)){
       -                uchar *dp, p[4];
       -                int d, dwid, ppb, np, nb;
       -                uchar lm, rm;
       -
       -DBG print("memopt, dst %p, dst->data->bdata %p\n", dst, dst->data->bdata);
       -                dwid = dst->width*sizeof(u32int);
       -                dp = byteaddr(dst, par->r.min);
       -                v = par->sdval;
       -DBG print("sdval %lud, depth %d\n", v, dst->depth);
       -                switch(dst->depth){
       -                case 1:
       -                case 2:
       -                case 4:
       -                        for(d=dst->depth; d<8; d*=2)
       -                                v |= (v<<d);
       -                        ppb = 8/dst->depth;        /* pixels per byte */
       -                        m = ppb-1;
       -                        /* left edge */
       -                        np = par->r.min.x&m;                /* no. pixels unused on left side of word */
       -                        dx -= (ppb-np);
       -                        nb = 8 - np * dst->depth;                /* no. bits used on right side of word */
       -                        lm = (1<<nb)-1;
       -DBG print("np %d x %d nb %d lm %ux ppb %d m %ux\n", np, par->r.min.x, nb, lm, ppb, m);        
       -
       -                        /* right edge */
       -                        np = par->r.max.x&m;        /* no. pixels used on left side of word */
       -                        dx -= np;
       -                        nb = 8 - np * dst->depth;                /* no. bits unused on right side of word */
       -                        rm = ~((1<<nb)-1);
       -DBG print("np %d x %d nb %d rm %ux ppb %d m %ux\n", np, par->r.max.x, nb, rm, ppb, m);        
       -
       -DBG print("dx %d Dx %d\n", dx, Dx(par->r));
       -                        /* lm, rm are masks that are 1 where we should touch the bits */
       -                        if(dx < 0){        /* just one byte */
       -                                lm &= rm;
       -                                for(y=0; y<dy; y++, dp+=dwid)
       -                                        *dp ^= (v ^ *dp) & lm;
       -                        }else if(dx == 0){        /* no full bytes */
       -                                if(lm)
       -                                        dwid--;
       -
       -                                for(y=0; y<dy; y++, dp+=dwid){
       -                                        if(lm){
       -DBG print("dp %p v %lux lm %ux (v ^ *dp) & lm %lux\n", dp, v, lm, (v^*dp)&lm);
       -                                                *dp ^= (v ^ *dp) & lm;
       -                                                dp++;
       -                                        }
       -                                        *dp ^= (v ^ *dp) & rm;
       -                                }
       -                        }else{                /* full bytes in middle */
       -                                dx /= ppb;
       -                                if(lm)
       -                                        dwid--;
       -                                dwid -= dx;
       -
       -                                for(y=0; y<dy; y++, dp+=dwid){
       -                                        if(lm){
       -                                                *dp ^= (v ^ *dp) & lm;
       -                                                dp++;
       -                                        }
       -                                        memset(dp, v, dx);
       -                                        dp += dx;
       -                                        *dp ^= (v ^ *dp) & rm;
       -                                }
       -                        }
       -                        return 1;
       -                case 8:
       -                        for(y=0; y<dy; y++, dp+=dwid)
       -                                memset(dp, v, dx);
       -                        return 1;
       -                case 16:
       -                        p[0] = v;                /* make little endian */
       -                        p[1] = v>>8;
       -                        v = *(ushort*)p;
       -DBG print("dp=%p; dx=%d; for(y=0; y<%d; y++, dp+=%d)\nmemsets(dp, v, dx);\n",
       -        dp, dx, dy, dwid);
       -                        for(y=0; y<dy; y++, dp+=dwid)
       -                                memsets(dp, v, dx);
       -                        return 1;
       -                case 24:
       -                        for(y=0; y<dy; y++, dp+=dwid)
       -                                memset24(dp, v, dx);
       -                        return 1;
       -                case 32:
       -                        p[0] = v;                /* make little endian */
       -                        p[1] = v>>8;
       -                        p[2] = v>>16;
       -                        p[3] = v>>24;
       -                        v = *(u32int*)p;
       -                        for(y=0; y<dy; y++, dp+=dwid)
       -                                memsetl(dp, v, dx);
       -                        return 1;
       -                default:
       -                        assert(0 /* bad dest depth in memoptdraw */);
       -                }
       -        }
       -
       -        /*
       -         * If no source alpha, an opaque mask, we can just copy the
       -         * source onto the destination.  If the channels are the same and
       -         * the source is not replicated, memmove suffices.
       -         */
       -        m = Simplemask|Fullmask;
       -        if((par->state&(m|Replsrc))==m && src->depth >= 8 
       -        && src->chan == dst->chan && !(src->flags&Falpha) && (op == S || op == SoverD)){
       -                uchar *sp, *dp;
       -                long swid, dwid, nb;
       -                int dir;
       -
       -                if(src->data == dst->data && byteaddr(dst, par->r.min) > byteaddr(src, par->sr.min))
       -                        dir = -1;
       -                else
       -                        dir = 1;
       -
       -                swid = src->width*sizeof(u32int);
       -                dwid = dst->width*sizeof(u32int);
       -                sp = byteaddr(src, par->sr.min);
       -                dp = byteaddr(dst, par->r.min);
       -                if(dir == -1){
       -                        sp += (dy-1)*swid;
       -                        dp += (dy-1)*dwid;
       -                        swid = -swid;
       -                        dwid = -dwid;
       -                }
       -                nb = (dx*src->depth)/8;
       -                for(y=0; y<dy; y++, sp+=swid, dp+=dwid)
       -                        memmove(dp, sp, nb);
       -                return 1;
       -        }
       -
       -        /*
       -         * If we have a 1-bit mask, 1-bit source, and 1-bit destination, and
       -         * they're all bit aligned, we can just use bit operators.  This happens
       -         * when we're manipulating boolean masks, e.g. in the arc code.
       -         */
       -        if((par->state&(Simplemask|Simplesrc|Replmask|Replsrc))==0 
       -        && dst->chan==GREY1 && src->chan==GREY1 && par->mask->chan==GREY1 
       -        && (par->r.min.x&7)==(par->sr.min.x&7) && (par->r.min.x&7)==(par->mr.min.x&7)){
       -                uchar *sp, *dp, *mp;
       -                uchar lm, rm;
       -                long swid, dwid, mwid;
       -                int i, x, dir;
       -
       -                sp = byteaddr(src, par->sr.min);
       -                dp = byteaddr(dst, par->r.min);
       -                mp = byteaddr(par->mask, par->mr.min);
       -                swid = src->width*sizeof(u32int);
       -                dwid = dst->width*sizeof(u32int);
       -                mwid = par->mask->width*sizeof(u32int);
       -
       -                if(src->data == dst->data && byteaddr(dst, par->r.min) > byteaddr(src, par->sr.min)){
       -                        dir = -1;
       -                }else
       -                        dir = 1;
       -
       -                lm = 0xFF>>(par->r.min.x&7);
       -                rm = 0xFF<<(8-(par->r.max.x&7));
       -                dx -= (8-(par->r.min.x&7)) + (par->r.max.x&7);
       -
       -                if(dx < 0){        /* one byte wide */
       -                        lm &= rm;
       -                        if(dir == -1){
       -                                dp += dwid*(dy-1);
       -                                sp += swid*(dy-1);
       -                                mp += mwid*(dy-1);
       -                                dwid = -dwid;
       -                                swid = -swid;
       -                                mwid = -mwid;
       -                        }
       -                        for(y=0; y<dy; y++){
       -                                *dp ^= (*dp ^ *sp) & *mp & lm;
       -                                dp += dwid;
       -                                sp += swid;
       -                                mp += mwid;
       -                        }
       -                        return 1;
       -                }
       -
       -                dx /= 8;
       -                if(dir == 1){
       -                        i = (lm!=0)+dx+(rm!=0);
       -                        mwid -= i;
       -                        swid -= i;
       -                        dwid -= i;
       -                        for(y=0; y<dy; y++, dp+=dwid, sp+=swid, mp+=mwid){
       -                                if(lm){
       -                                        *dp ^= (*dp ^ *sp++) & *mp++ & lm;
       -                                        dp++;
       -                                }
       -                                for(x=0; x<dx; x++){
       -                                        *dp ^= (*dp ^ *sp++) & *mp++;
       -                                        dp++;
       -                                }
       -                                if(rm){
       -                                        *dp ^= (*dp ^ *sp++) & *mp++ & rm;
       -                                        dp++;
       -                                }
       -                        }
       -                        return 1;
       -                }else{
       -                /* dir == -1 */
       -                        i = (lm!=0)+dx+(rm!=0);
       -                        dp += dwid*(dy-1)+i-1;
       -                        sp += swid*(dy-1)+i-1;
       -                        mp += mwid*(dy-1)+i-1;
       -                        dwid = -dwid+i;
       -                        swid = -swid+i;
       -                        mwid = -mwid+i;
       -                        for(y=0; y<dy; y++, dp+=dwid, sp+=swid, mp+=mwid){
       -                                if(rm){
       -                                        *dp ^= (*dp ^ *sp--) & *mp-- & rm;
       -                                        dp--;
       -                                }
       -                                for(x=0; x<dx; x++){
       -                                        *dp ^= (*dp ^ *sp--) & *mp--;
       -                                        dp--;
       -                                }
       -                                if(lm){
       -                                        *dp ^= (*dp ^ *sp--) & *mp-- & lm;
       -                                        dp--;
       -                                }
       -                        }
       -                }
       -                return 1;
       -        }
       -        return 0;        
       -}
       -#undef DBG
       -
       -/*
       - * Boolean character drawing.
       - * Solid opaque color through a 1-bit greyscale mask.
       - */
       -#define DBG if(0)
       -static int
       -chardraw(Memdrawparam *par)
       -{
       -        u32int bits;
       -        int i, ddepth, dy, dx, x, bx, ex, y, npack, bsh, depth, op;
       -        u32int v, maskwid, dstwid;
       -        uchar *wp, *rp, *q, *wc;
       -        ushort *ws;
       -        u32int *wl;
       -        uchar sp[4];
       -        Rectangle r, mr;
       -        Memimage *mask, *src, *dst;
       -
       -if(0) if(drawdebug) iprint("chardraw? mf %lux md %d sf %lux dxs %d dys %d dd %d ddat %p sdat %p\n",
       -                par->mask->flags, par->mask->depth, par->src->flags, 
       -                Dx(par->src->r), Dy(par->src->r), par->dst->depth, par->dst->data, par->src->data);
       -
       -        mask = par->mask;
       -        src = par->src;
       -        dst = par->dst;
       -        r = par->r;
       -        mr = par->mr;
       -        op = par->op;
       -
       -        if((par->state&(Replsrc|Simplesrc|Fullsrc|Replmask)) != (Replsrc|Simplesrc|Fullsrc)
       -        || mask->depth != 1 || dst->depth<8 || dst->data==src->data
       -        || op != SoverD)
       -                return 0;
       -
       -/*if(drawdebug) iprint("chardraw..."); */
       -
       -        depth = mask->depth;
       -        maskwid = mask->width*sizeof(u32int);
       -        rp = byteaddr(mask, mr.min);
       -        npack = 8/depth;
       -        bsh = (mr.min.x % npack) * depth;
       -
       -        wp = byteaddr(dst, r.min);
       -        dstwid = dst->width*sizeof(u32int);
       -DBG print("bsh %d\n", bsh);
       -        dy = Dy(r);
       -        dx = Dx(r);
       -
       -        ddepth = dst->depth;
       -
       -        /*
       -         * for loop counts from bsh to bsh+dx
       -         *
       -         * we want the bottom bits to be the amount
       -         * to shift the pixels down, so for n≡0 (mod 8) we want 
       -         * bottom bits 7.  for n≡1, 6, etc.
       -         * the bits come from -n-1.
       -         */
       -
       -        bx = -bsh-1;
       -        ex = -bsh-1-dx;
       -        SET(bits);
       -        v = par->sdval;
       -
       -        /* make little endian */
       -        sp[0] = v;
       -        sp[1] = v>>8;
       -        sp[2] = v>>16;
       -        sp[3] = v>>24;
       -
       -/*print("sp %x %x %x %x\n", sp[0], sp[1], sp[2], sp[3]); */
       -        for(y=0; y<dy; y++, rp+=maskwid, wp+=dstwid){
       -                q = rp;
       -                if(bsh)
       -                        bits = *q++;
       -                switch(ddepth){
       -                case 8:
       -/*if(drawdebug) iprint("8loop..."); */
       -                        wc = wp;
       -                        for(x=bx; x>ex; x--, wc++){
       -                                i = x&7;
       -                                if(i == 8-1)
       -                                        bits = *q++;
       -DBG print("bits %lux sh %d...", bits, i);
       -                                if((bits>>i)&1)
       -                                        *wc = v;
       -                        }
       -                        break;
       -                case 16:
       -                        ws = (ushort*)wp;
       -                        v = *(ushort*)sp;
       -                        for(x=bx; x>ex; x--, ws++){
       -                                i = x&7;
       -                                if(i == 8-1)
       -                                        bits = *q++;
       -DBG print("bits %lux sh %d...", bits, i);
       -                                if((bits>>i)&1)
       -                                        *ws = v;
       -                        }
       -                        break;
       -                case 24:
       -                        wc = wp;
       -                        for(x=bx; x>ex; x--, wc+=3){
       -                                i = x&7;
       -                                if(i == 8-1)
       -                                        bits = *q++;
       -DBG print("bits %lux sh %d...", bits, i);
       -                                if((bits>>i)&1){
       -                                        wc[0] = sp[0];
       -                                        wc[1] = sp[1];
       -                                        wc[2] = sp[2];
       -                                }
       -                        }
       -                        break;
       -                case 32:
       -                        wl = (u32int*)wp;
       -                        v = *(u32int*)sp;
       -                        for(x=bx; x>ex; x--, wl++){
       -                                i = x&7;
       -                                if(i == 8-1)
       -                                        bits = *q++;
       -DBG iprint("bits %lux sh %d...", bits, i);
       -                                if((bits>>i)&1)
       -                                        *wl = v;
       -                        }
       -                        break;
       -                }
       -        }
       -
       -DBG print("\n");        
       -        return 1;        
       -}
       -#undef DBG
       -
       -
       -/*
       - * Fill entire byte with replicated (if necessary) copy of source pixel,
       - * assuming destination ldepth is >= source ldepth.
       - *
       - * This code is just plain wrong for >8bpp.
       - *
       -u32int
       -membyteval(Memimage *src)
       -{
       -        int i, val, bpp;
       -        uchar uc;
       -
       -        unloadmemimage(src, src->r, &uc, 1);
       -        bpp = src->depth;
       -        uc <<= (src->r.min.x&(7/src->depth))*src->depth;
       -        uc &= ~(0xFF>>bpp);
       -        * pixel value is now in high part of byte. repeat throughout byte 
       -        val = uc;
       -        for(i=bpp; i<8; i<<=1)
       -                val |= val>>i;
       -        return val;
       -}
       - * 
       - */
       -
       -void
       -_memfillcolor(Memimage *i, u32int val)
       -{
       -        u32int bits;
       -        int d, y;
       -        uchar p[4];
       -
       -        if(val == DNofill)
       -                return;
       -
       -        bits = _rgbatoimg(i, val);
       -        switch(i->depth){
       -        case 24:        /* 24-bit images suck */
       -                for(y=i->r.min.y; y<i->r.max.y; y++)
       -                        memset24(byteaddr(i, Pt(i->r.min.x, y)), bits, Dx(i->r));
       -                break;
       -        default:        /* 1, 2, 4, 8, 16, 32 */
       -                for(d=i->depth; d<32; d*=2)
       -                        bits = (bits << d) | bits;
       -                p[0] = bits;                /* make little endian */
       -                p[1] = bits>>8;
       -                p[2] = bits>>16;
       -                p[3] = bits>>24;
       -                bits = *(u32int*)p;
       -                memsetl(wordaddr(i, i->r.min), bits, i->width*Dy(i->r));
       -                break;
       -        }
       -}
       -
 (DIR) diff --git a/src/libdraw/md-drawtest.c b/src/libdraw/md-drawtest.c
       t@@ -1,1004 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <bio.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -
       -#define DBG if(0)
       -#define RGB2K(r,g,b)        ((299*((u32int)(r))+587*((u32int)(g))+114*((u32int)(b)))/1000)
       -
       -/*
       - * This program tests the 'memimagedraw' primitive stochastically.
       - * It tests the combination aspects of it thoroughly, but since the
       - * three images it uses are disjoint, it makes no check of the
       - * correct behavior when images overlap.  That is, however, much
       - * easier to get right and to test.
       - */
       -
       -void        drawonepixel(Memimage*, Point, Memimage*, Point, Memimage*, Point);
       -void        verifyone(void);
       -void        verifyline(void);
       -void        verifyrect(void);
       -void        verifyrectrepl(int, int);
       -void putpixel(Memimage *img, Point pt, u32int nv);
       -u32int rgbatopix(uchar, uchar, uchar, uchar);
       -
       -char *dchan, *schan, *mchan;
       -int dbpp, sbpp, mbpp;
       -
       -int drawdebug=0;
       -int        seed;
       -int        niters = 100;
       -int        dbpp;        /* bits per pixel in destination */
       -int        sbpp;        /* bits per pixel in src */
       -int        mbpp;        /* bits per pixel in mask */
       -int        dpm;        /* pixel mask at high part of byte, in destination */
       -int        nbytes;        /* in destination */
       -
       -int        Xrange        = 64;
       -int        Yrange        = 8;
       -
       -Memimage        *dst;
       -Memimage        *src;
       -Memimage        *mask;
       -Memimage        *stmp;
       -Memimage        *mtmp;
       -Memimage        *ones;
       -uchar        *dstbits;
       -uchar        *srcbits;
       -uchar        *maskbits;
       -u32int        *savedstbits;
       -
       -void
       -rdb(void)
       -{
       -}
       -
       -int
       -iprint(char *fmt, ...)
       -{
       -        int n;        
       -        va_list va;
       -        char buf[1024];
       -
       -        va_start(va, fmt);
       -        n = doprint(buf, buf+sizeof buf, fmt, va) - buf;
       -        va_end(va);
       -
       -        write(1,buf,n);
       -        return 1;
       -}
       -
       -void
       -main(int argc, char *argv[])
       -{
       -        memimageinit();
       -        seed = time(0);
       -
       -        ARGBEGIN{
       -        case 'x':
       -                Xrange = atoi(ARGF());
       -                break;
       -        case 'y':
       -                Yrange = atoi(ARGF());
       -                break;
       -        case 'n':
       -                niters = atoi(ARGF());
       -                break;
       -        case 's':
       -                seed = atoi(ARGF());
       -                break;
       -        }ARGEND
       -
       -        dchan = "r8g8b8";
       -        schan = "r8g8b8";
       -        mchan = "r8g8b8";
       -        switch(argc){
       -        case 3:        mchan = argv[2];
       -        case 2:        schan = argv[1];
       -        case 1:        dchan = argv[0];
       -        case 0:        break;
       -        default:        goto Usage;
       -        Usage:
       -                fprint(2, "usage: dtest [dchan [schan [mchan]]]\n");
       -                exits("usage");
       -        }
       -
       -        fmtinstall('b', numbconv);        /* binary! */
       -
       -        fprint(2, "%s -x %d -y %d -s 0x%x %s %s %s\n", argv0, Xrange, Yrange, seed, dchan, schan, mchan);
       -        srand(seed);
       -
       -        dst = allocmemimage(Rect(0, 0, Xrange, Yrange), strtochan(dchan));
       -        src = allocmemimage(Rect(0, 0, Xrange, Yrange), strtochan(schan));
       -        mask = allocmemimage(Rect(0, 0, Xrange, Yrange), strtochan(mchan));
       -        stmp = allocmemimage(Rect(0, 0, Xrange, Yrange), strtochan(schan));
       -        mtmp = allocmemimage(Rect(0, 0, Xrange, Yrange), strtochan(mchan));
       -        ones = allocmemimage(Rect(0, 0, Xrange, Yrange), strtochan(mchan));
       -/*        print("chan %lux %lux %lux %lux %lux %lux\n", dst->chan, src->chan, mask->chan, stmp->chan, mtmp->chan, ones->chan); */
       -        if(dst==0 || src==0 || mask==0 || mtmp==0 || ones==0) {
       -        Alloc:
       -                fprint(2, "dtest: allocation failed: %r\n");
       -                exits("alloc");
       -        }
       -        nbytes = (4*Xrange+4)*Yrange;
       -        srcbits = malloc(nbytes);
       -        dstbits = malloc(nbytes);
       -        maskbits = malloc(nbytes);
       -        savedstbits = malloc(nbytes);
       -        if(dstbits==0 || srcbits==0 || maskbits==0 || savedstbits==0)
       -                goto Alloc;
       -        dbpp = dst->depth;
       -        sbpp = src->depth;
       -        mbpp = mask->depth;
       -        dpm = 0xFF ^ (0xFF>>dbpp);
       -        memset(ones->data->bdata, 0xFF, ones->width*sizeof(u32int)*Yrange);
       -
       -
       -        fprint(2, "dtest: verify single pixel operation\n");
       -        verifyone();
       -
       -        fprint(2, "dtest: verify full line non-replicated\n");
       -        verifyline();
       -
       -        fprint(2, "dtest: verify full rectangle non-replicated\n");
       -        verifyrect();
       -
       -        fprint(2, "dtest: verify full rectangle source replicated\n");
       -        verifyrectrepl(1, 0);
       -
       -        fprint(2, "dtest: verify full rectangle mask replicated\n");
       -        verifyrectrepl(0, 1);
       -
       -        fprint(2, "dtest: verify full rectangle source and mask replicated\n");
       -        verifyrectrepl(1, 1);
       -
       -        exits(0);
       -}
       -
       -/*
       - * Dump out an ASCII representation of an image.  The label specifies
       - * a list of characters to put at various points in the picture.
       - */
       -static void
       -Bprintr5g6b5(Biobuf *bio, char*, u32int v)
       -{
       -        int r,g,b;
       -        r = (v>>11)&31;
       -        g = (v>>5)&63;
       -        b = v&31;
       -        Bprint(bio, "%.2x%.2x%.2x", r,g,b);
       -}
       -
       -static void
       -Bprintr5g5b5a1(Biobuf *bio, char*, u32int v)
       -{
       -        int r,g,b,a;
       -        r = (v>>11)&31;
       -        g = (v>>6)&31;
       -        b = (v>>1)&31;
       -        a = v&1;
       -        Bprint(bio, "%.2x%.2x%.2x%.2x", r,g,b,a);
       -}
       -
       -void
       -dumpimage(char *name, Memimage *img, void *vdata, Point labelpt)
       -{
       -        Biobuf b;
       -        uchar *data;
       -        uchar *p;
       -        char *arg;
       -        void (*fmt)(Biobuf*, char*, u32int);
       -        int npr, x, y, nb, bpp;
       -        u32int v, mask;
       -        Rectangle r;
       -
       -        fmt = nil;
       -        arg = nil;
       -        switch(img->depth){
       -        case 1:
       -        case 2:
       -        case 4:
       -                fmt = (void(*)(Biobuf*,char*,u32int))Bprint;
       -                arg = "%.1ux";
       -                break;
       -        case 8:
       -                fmt = (void(*)(Biobuf*,char*,u32int))Bprint;
       -                arg = "%.2ux";
       -                break;
       -        case 16:
       -                arg = nil;
       -                if(img->chan == RGB16)
       -                        fmt = Bprintr5g6b5;
       -                else{
       -                        fmt = (void(*)(Biobuf*,char*,u32int))Bprint;
       -                        arg = "%.4ux";
       -                }
       -                break;
       -        case 24:
       -                fmt = (void(*)(Biobuf*,char*,u32int))Bprint;
       -                arg = "%.6lux";
       -                break;
       -        case 32:
       -                fmt = (void(*)(Biobuf*,char*,u32int))Bprint;
       -                arg = "%.8lux";
       -                break;
       -        }
       -        if(fmt == nil){
       -                fprint(2, "bad format\n");
       -                abort();
       -        }
       -
       -        r  = img->r;
       -        Binit(&b, 2, OWRITE);
       -        data = vdata;
       -        bpp = img->depth;
       -        Bprint(&b, "%s\t%d\tr %R clipr %R repl %d data %p *%P\n", name, r.min.x, r, img->clipr, (img->flags&Frepl) ? 1 : 0, vdata, labelpt);
       -        mask = (1ULL<<bpp)-1;
       -/*        for(y=r.min.y; y<r.max.y; y++){ */
       -        for(y=0; y<Yrange; y++){
       -                nb = 0;
       -                v = 0;
       -                p = data+(byteaddr(img, Pt(0,y))-(uchar*)img->data->bdata);
       -                Bprint(&b, "%-4d\t", y);
       -/*                for(x=r.min.x; x<r.max.x; x++){ */
       -                for(x=0; x<Xrange; x++){
       -                        if(x==0)
       -                                Bprint(&b, "\t");
       -
       -                        if(x != 0 && (x%8)==0)
       -                                Bprint(&b, " ");
       -
       -                        npr = 0;
       -                        if(x==labelpt.x && y==labelpt.y){
       -                                Bprint(&b, "*");
       -                                npr++;
       -                        }
       -                        if(npr == 0)
       -                                Bprint(&b, " ");
       -
       -                        while(nb < bpp){
       -                                v &= (1<<nb)-1;
       -                                v |= (u32int)(*p++) << nb;
       -                                nb += 8;
       -                        }
       -                        nb -= bpp;
       -/*                        print("bpp %d v %.8lux mask %.8lux nb %d\n", bpp, v, mask, nb); */
       -                        fmt(&b, arg, (v>>nb)&mask);
       -                }
       -                Bprint(&b, "\n");
       -        }
       -        Bterm(&b);
       -}
       -
       -/*
       - * Verify that the destination pixel has the specified value.
       - * The value is in the high bits of v, suitably masked, but must
       - * be extracted from the destination Memimage.
       - */
       -void
       -checkone(Point p, Point sp, Point mp)
       -{
       -        int delta;
       -        uchar *dp, *sdp;
       -
       -        delta = (uchar*)byteaddr(dst, p)-(uchar*)dst->data->bdata;
       -        dp = (uchar*)dst->data->bdata+delta;
       -        sdp = (uchar*)savedstbits+delta;
       -
       -        if(memcmp(dp, sdp, (dst->depth+7)/8) != 0) {
       -                fprint(2, "dtest: one bad pixel drawing at dst %P from source %P mask %P\n", p, sp, mp);
       -                fprint(2, " %.2ux %.2ux %.2ux %.2ux should be %.2ux %.2ux %.2ux %.2ux\n",
       -                        dp[0], dp[1], dp[2], dp[3], sdp[0], sdp[1], sdp[2], sdp[3]);
       -                fprint(2, "addresses dst %p src %p mask %p\n", dp, byteaddr(src, sp), byteaddr(mask, mp));
       -                dumpimage("src", src, src->data->bdata, sp);
       -                dumpimage("mask", mask, mask->data->bdata, mp);
       -                dumpimage("origdst", dst, dstbits, p);
       -                dumpimage("dst", dst, dst->data->bdata, p);
       -                dumpimage("gooddst", dst, savedstbits, p);
       -                abort();
       -        }
       -}
       -
       -/*
       - * Verify that the destination line has the same value as the saved line.
       - */
       -#define RECTPTS(r) (r).min.x, (r).min.y, (r).max.x, (r).max.y
       -void
       -checkline(Rectangle r, Point sp, Point mp, int y, Memimage *stmp, Memimage *mtmp)
       -{
       -        u32int *dp;
       -        int nb;
       -        u32int *saved;
       -
       -        dp = wordaddr(dst, Pt(0, y));
       -        saved = savedstbits + y*dst->width;
       -        if(dst->depth < 8)
       -                nb = Xrange/(8/dst->depth);
       -        else
       -                nb = Xrange*(dst->depth/8);
       -        if(memcmp(dp, saved, nb) != 0){
       -                fprint(2, "dtest: bad line at y=%d; saved %p dp %p\n", y, saved, dp);
       -                fprint(2, "draw dst %R src %P mask %P\n", r, sp, mp);
       -                dumpimage("src", src, src->data->bdata, sp);
       -                if(stmp) dumpimage("stmp", stmp, stmp->data->bdata, sp);
       -                dumpimage("mask", mask, mask->data->bdata, mp);
       -                if(mtmp) dumpimage("mtmp", mtmp, mtmp->data->bdata, mp);
       -                dumpimage("origdst", dst, dstbits, r.min);
       -                dumpimage("dst", dst, dst->data->bdata, r.min);
       -                dumpimage("gooddst", dst, savedstbits, r.min);
       -                abort();
       -        }
       -}
       -
       -/*
       - * Fill the bits of an image with random data.
       - * The Memimage parameter is used only to make sure
       - * the data is well formatted: only ucbits is written.
       - */
       -void
       -fill(Memimage *img, uchar *ucbits)
       -{
       -        int i, x, y;
       -        ushort *up;
       -        uchar alpha, r, g, b;
       -        void *data;
       -
       -        if((img->flags&Falpha) == 0){
       -                up = (ushort*)ucbits;
       -                for(i=0; i<nbytes/2; i++)
       -                        *up++ = lrand() >> 7;
       -                if(i+i != nbytes)
       -                        *(uchar*)up = lrand() >> 7;
       -        }else{
       -                data = img->data->bdata;
       -                img->data->bdata = ucbits;
       -
       -                for(x=img->r.min.x; x<img->r.max.x; x++)
       -                for(y=img->r.min.y; y<img->r.max.y; y++){
       -                        alpha = rand() >> 4;
       -                        r = rand()%(alpha+1);
       -                        g = rand()%(alpha+1);
       -                        b = rand()%(alpha+1);
       -                        putpixel(img, Pt(x,y), rgbatopix(r,g,b,alpha));
       -                }
       -                img->data->bdata = data;
       -        }
       -                
       -}
       -
       -/*
       - * Mask is preset; do the rest
       - */
       -void
       -verifyonemask(void)
       -{
       -        Point dp, sp, mp;
       -
       -        fill(dst, dstbits);
       -        fill(src, srcbits);
       -        memmove(dst->data->bdata, dstbits, dst->width*sizeof(u32int)*Yrange);
       -        memmove(src->data->bdata, srcbits, src->width*sizeof(u32int)*Yrange);
       -        memmove(mask->data->bdata, maskbits, mask->width*sizeof(u32int)*Yrange);
       -
       -        dp.x = nrand(Xrange);
       -        dp.y = nrand(Yrange);
       -
       -        sp.x = nrand(Xrange);
       -        sp.y = nrand(Yrange);
       -
       -        mp.x = nrand(Xrange);
       -        mp.y = nrand(Yrange);
       -
       -        drawonepixel(dst, dp, src, sp, mask, mp);
       -        memmove(mask->data->bdata, maskbits, mask->width*sizeof(u32int)*Yrange);
       -        memmove(savedstbits, dst->data->bdata, dst->width*sizeof(u32int)*Yrange);
       -        
       -        memmove(dst->data->bdata, dstbits, dst->width*sizeof(u32int)*Yrange);
       -        memimagedraw(dst, Rect(dp.x, dp.y, dp.x+1, dp.y+1), src, sp, mask, mp, SoverD);
       -        memmove(mask->data->bdata, maskbits, mask->width*sizeof(u32int)*Yrange);
       -
       -        checkone(dp, sp, mp);
       -}
       -
       -void
       -verifyone(void)
       -{
       -        int i;
       -
       -        /* mask all zeros */
       -        memset(maskbits, 0, nbytes);
       -        for(i=0; i<niters; i++)
       -                verifyonemask();
       -
       -        /* mask all ones */
       -        memset(maskbits, 0xFF, nbytes);
       -        for(i=0; i<niters; i++)
       -                verifyonemask();
       -
       -        /* random mask */
       -        for(i=0; i<niters; i++){
       -                fill(mask, maskbits);
       -                verifyonemask();
       -        }
       -}
       -
       -/*
       - * Mask is preset; do the rest
       - */
       -void
       -verifylinemask(void)
       -{
       -        Point sp, mp, tp, up;
       -        Rectangle dr;
       -        int x;
       -
       -        fill(dst, dstbits);
       -        fill(src, srcbits);
       -        memmove(dst->data->bdata, dstbits, dst->width*sizeof(u32int)*Yrange);
       -        memmove(src->data->bdata, srcbits, src->width*sizeof(u32int)*Yrange);
       -        memmove(mask->data->bdata, maskbits, mask->width*sizeof(u32int)*Yrange);
       -
       -        dr.min.x = nrand(Xrange-1);
       -        dr.min.y = nrand(Yrange-1);
       -        dr.max.x = dr.min.x + 1 + nrand(Xrange-1-dr.min.x);
       -        dr.max.y = dr.min.y + 1;
       -
       -        sp.x = nrand(Xrange);
       -        sp.y = nrand(Yrange);
       -
       -        mp.x = nrand(Xrange);
       -        mp.y = nrand(Yrange);
       -
       -        tp = sp;
       -        up = mp;
       -        for(x=dr.min.x; x<dr.max.x && tp.x<Xrange && up.x<Xrange; x++,tp.x++,up.x++)
       -                memimagedraw(dst, Rect(x, dr.min.y, x+1, dr.min.y+1), src, tp, mask, up, SoverD);
       -        memmove(savedstbits, dst->data->bdata, dst->width*sizeof(u32int)*Yrange);
       -
       -        memmove(dst->data->bdata, dstbits, dst->width*sizeof(u32int)*Yrange);
       -
       -        memimagedraw(dst, dr, src, sp, mask, mp, SoverD);
       -        checkline(dr, drawrepl(src->r, sp), drawrepl(mask->r, mp), dr.min.y, nil, nil);
       -}
       -
       -void
       -verifyline(void)
       -{
       -        int i;
       -
       -        /* mask all ones */
       -        memset(maskbits, 0xFF, nbytes);
       -        for(i=0; i<niters; i++)
       -                verifylinemask();
       -
       -        /* mask all zeros */
       -        memset(maskbits, 0, nbytes);
       -        for(i=0; i<niters; i++)
       -                verifylinemask();
       -
       -        /* random mask */
       -        for(i=0; i<niters; i++){
       -                fill(mask, maskbits);
       -                verifylinemask();
       -        }
       -}
       -
       -/*
       - * Mask is preset; do the rest
       - */
       -void
       -verifyrectmask(void)
       -{
       -        Point sp, mp, tp, up;
       -        Rectangle dr;
       -        int x, y;
       -
       -        fill(dst, dstbits);
       -        fill(src, srcbits);
       -        memmove(dst->data->bdata, dstbits, dst->width*sizeof(u32int)*Yrange);
       -        memmove(src->data->bdata, srcbits, src->width*sizeof(u32int)*Yrange);
       -        memmove(mask->data->bdata, maskbits, mask->width*sizeof(u32int)*Yrange);
       -
       -        dr.min.x = nrand(Xrange-1);
       -        dr.min.y = nrand(Yrange-1);
       -        dr.max.x = dr.min.x + 1 + nrand(Xrange-1-dr.min.x);
       -        dr.max.y = dr.min.y + 1 + nrand(Yrange-1-dr.min.y);
       -
       -        sp.x = nrand(Xrange);
       -        sp.y = nrand(Yrange);
       -
       -        mp.x = nrand(Xrange);
       -        mp.y = nrand(Yrange);
       -
       -        tp = sp;
       -        up = mp;
       -        for(y=dr.min.y; y<dr.max.y && tp.y<Yrange && up.y<Yrange; y++,tp.y++,up.y++){
       -                for(x=dr.min.x; x<dr.max.x && tp.x<Xrange && up.x<Xrange; x++,tp.x++,up.x++)
       -                        memimagedraw(dst, Rect(x, y, x+1, y+1), src, tp, mask, up, SoverD);
       -                tp.x = sp.x;
       -                up.x = mp.x;
       -        }
       -        memmove(savedstbits, dst->data->bdata, dst->width*sizeof(u32int)*Yrange);
       -
       -        memmove(dst->data->bdata, dstbits, dst->width*sizeof(u32int)*Yrange);
       -
       -        memimagedraw(dst, dr, src, sp, mask, mp, SoverD);
       -        for(y=0; y<Yrange; y++)
       -                checkline(dr, drawrepl(src->r, sp), drawrepl(mask->r, mp), y, nil, nil);
       -}
       -
       -void
       -verifyrect(void)
       -{
       -        int i;
       -
       -        /* mask all zeros */
       -        memset(maskbits, 0, nbytes);
       -        for(i=0; i<niters; i++)
       -                verifyrectmask();
       -
       -        /* mask all ones */
       -        memset(maskbits, 0xFF, nbytes);
       -        for(i=0; i<niters; i++)
       -                verifyrectmask();
       -
       -        /* random mask */
       -        for(i=0; i<niters; i++){
       -                fill(mask, maskbits);
       -                verifyrectmask();
       -        }
       -}
       -
       -Rectangle
       -randrect(void)
       -{
       -        Rectangle r;
       -
       -        r.min.x = nrand(Xrange-1);
       -        r.min.y = nrand(Yrange-1);
       -        r.max.x = r.min.x + 1 + nrand(Xrange-1-r.min.x);
       -        r.max.y = r.min.y + 1 + nrand(Yrange-1-r.min.y);
       -        return r;
       -}
       -
       -/*
       - * Return coordinate corresponding to x withing range [minx, maxx)
       - */
       -int
       -tilexy(int minx, int maxx, int x)
       -{
       -        int sx;
       -
       -        sx = (x-minx) % (maxx-minx);
       -        if(sx < 0)
       -                sx += maxx-minx;
       -        return sx+minx;
       -}
       -
       -void
       -replicate(Memimage *i, Memimage *tmp)
       -{
       -        Rectangle r, r1;
       -        int x, y, nb;
       -
       -        /* choose the replication window (i->r) */
       -        r.min.x = nrand(Xrange-1);
       -        r.min.y = nrand(Yrange-1);
       -        /* make it trivial more often than pure chance allows */
       -        switch(lrand()&0){
       -        case 1:
       -                r.max.x = r.min.x + 2;
       -                r.max.y = r.min.y + 2;
       -                if(r.max.x < Xrange && r.max.y < Yrange)
       -                        break;
       -                /* fall through */
       -        case 0:
       -                r.max.x = r.min.x + 1;
       -                r.max.y = r.min.y + 1;
       -                break;
       -        default:
       -                if(r.min.x+3 >= Xrange)
       -                        r.max.x = Xrange;
       -                else
       -                        r.max.x = r.min.x+3 + nrand(Xrange-(r.min.x+3));
       -
       -                if(r.min.y+3 >= Yrange)
       -                        r.max.y = Yrange;
       -                else
       -                        r.max.y = r.min.y+3 + nrand(Yrange-(r.min.y+3));
       -        }
       -        assert(r.min.x >= 0);        
       -        assert(r.max.x <= Xrange);
       -        assert(r.min.y >= 0);
       -        assert(r.max.y <= Yrange);
       -        /* copy from i to tmp so we have just the replicated bits */
       -        nb = tmp->width*sizeof(u32int)*Yrange;
       -        memset(tmp->data->bdata, 0, nb);
       -        memimagedraw(tmp, r, i, r.min, ones, r.min, SoverD);
       -        memmove(i->data->bdata, tmp->data->bdata, nb);
       -        /* i is now a non-replicated instance of the replication */
       -        /* replicate it by hand through tmp */
       -        memset(tmp->data->bdata, 0, nb);
       -        x = -(tilexy(r.min.x, r.max.x, 0)-r.min.x);
       -        for(; x<Xrange; x+=Dx(r)){
       -                y = -(tilexy(r.min.y, r.max.y, 0)-r.min.y);
       -                for(; y<Yrange; y+=Dy(r)){
       -                        /* set r1 to instance of tile by translation */
       -                        r1.min.x = x;
       -                        r1.min.y = y;
       -                        r1.max.x = r1.min.x+Dx(r);
       -                        r1.max.y = r1.min.y+Dy(r);
       -                        memimagedraw(tmp, r1, i, r.min, ones, r.min, SoverD);
       -                }
       -        }
       -        i->flags |= Frepl;
       -        i->r = r;
       -        i->clipr = randrect();
       -/*        fprint(2, "replicate [[%d %d] [%d %d]] [[%d %d][%d %d]]\n", r.min.x, r.min.y, r.max.x, r.max.y, */
       -/*                i->clipr.min.x, i->clipr.min.y, i->clipr.max.x, i->clipr.max.y); */
       -        tmp->clipr = i->clipr;
       -}
       -
       -/*
       - * Mask is preset; do the rest
       - */
       -void
       -verifyrectmaskrepl(int srcrepl, int maskrepl)
       -{
       -        Point sp, mp, tp, up;
       -        Rectangle dr;
       -        int x, y;
       -        Memimage *s, *m;
       -
       -/*        print("verfrect %d %d\n", srcrepl, maskrepl); */
       -        src->flags &= ~Frepl;
       -        src->r = Rect(0, 0, Xrange, Yrange);
       -        src->clipr = src->r;
       -        stmp->flags &= ~Frepl;
       -        stmp->r = Rect(0, 0, Xrange, Yrange);
       -        stmp->clipr = src->r;
       -        mask->flags &= ~Frepl;
       -        mask->r = Rect(0, 0, Xrange, Yrange);
       -        mask->clipr = mask->r;
       -        mtmp->flags &= ~Frepl;
       -        mtmp->r = Rect(0, 0, Xrange, Yrange);
       -        mtmp->clipr = mask->r;
       -
       -        fill(dst, dstbits);
       -        fill(src, srcbits);
       -
       -        memmove(dst->data->bdata, dstbits, dst->width*sizeof(u32int)*Yrange);
       -        memmove(src->data->bdata, srcbits, src->width*sizeof(u32int)*Yrange);
       -        memmove(mask->data->bdata, maskbits, mask->width*sizeof(u32int)*Yrange);
       -
       -        if(srcrepl){
       -                replicate(src, stmp);
       -                s = stmp;
       -        }else
       -                s = src;
       -        if(maskrepl){
       -                replicate(mask, mtmp);
       -                m = mtmp;
       -        }else
       -                m = mask;
       -
       -        dr = randrect();
       -
       -        sp.x = nrand(Xrange);
       -        sp.y = nrand(Yrange);
       -
       -        mp.x = nrand(Xrange);
       -        mp.y = nrand(Yrange);
       -
       -DBG        print("smalldraws\n");
       -        for(tp.y=sp.y,up.y=mp.y,y=dr.min.y; y<dr.max.y && tp.y<Yrange && up.y<Yrange; y++,tp.y++,up.y++)
       -                for(tp.x=sp.x,up.x=mp.x,x=dr.min.x; x<dr.max.x && tp.x<Xrange && up.x<Xrange; x++,tp.x++,up.x++)
       -                        memimagedraw(dst, Rect(x, y, x+1, y+1), s, tp, m, up, SoverD);
       -        memmove(savedstbits, dst->data->bdata, dst->width*sizeof(u32int)*Yrange);
       -
       -        memmove(dst->data->bdata, dstbits, dst->width*sizeof(u32int)*Yrange);
       -
       -DBG        print("bigdraw\n");
       -        memimagedraw(dst, dr, src, sp, mask, mp, SoverD);
       -        for(y=0; y<Yrange; y++)
       -                checkline(dr, drawrepl(src->r, sp), drawrepl(mask->r, mp), y, srcrepl?stmp:nil, maskrepl?mtmp:nil);
       -}
       -
       -void
       -verifyrectrepl(int srcrepl, int maskrepl)
       -{
       -        int i;
       -
       -        /* mask all ones */
       -        memset(maskbits, 0xFF, nbytes);
       -        for(i=0; i<niters; i++)
       -                verifyrectmaskrepl(srcrepl, maskrepl);
       -
       -        /* mask all zeros */
       -        memset(maskbits, 0, nbytes);
       -        for(i=0; i<niters; i++)
       -                verifyrectmaskrepl(srcrepl, maskrepl);
       -
       -        /* random mask */
       -        for(i=0; i<niters; i++){
       -                fill(mask, maskbits);
       -                verifyrectmaskrepl(srcrepl, maskrepl);
       -        }
       -}
       -
       -/*
       - * Trivial draw implementation.
       - * Color values are passed around as u32ints containing ααRRGGBB
       - */
       -
       -/*
       - * Convert v, which is nhave bits wide, into its nwant bits wide equivalent.
       - * Replicates to widen the value, truncates to narrow it.
       - */
       -u32int
       -replbits(u32int v, int nhave, int nwant)
       -{
       -        v &= (1<<nhave)-1;
       -        for(; nhave<nwant; nhave*=2)
       -                v |= v<<nhave;
       -        v >>= (nhave-nwant);
       -        return v & ((1<<nwant)-1);
       -}
       -
       -/*
       - * Decode a pixel into the uchar* values.
       - */
       -void
       -pixtorgba(u32int v, uchar *r, uchar *g, uchar *b, uchar *a)
       -{
       -        *a = v>>24;
       -        *r = v>>16;
       -        *g = v>>8;
       -        *b = v;
       -}
       -
       -/*
       - * Convert uchar channels into u32int pixel.
       - */
       -u32int
       -rgbatopix(uchar r, uchar g, uchar b, uchar a)
       -{
       -        return (a<<24)|(r<<16)|(g<<8)|b;
       -}
       -
       -/*
       - * Retrieve the pixel value at pt in the image.
       - */
       -u32int
       -getpixel(Memimage *img, Point pt)
       -{
       -        uchar r, g, b, a, *p;
       -        int nbits, npack, bpp;
       -        u32int v, c, rbits, bits;
       -
       -        r = g = b = 0;
       -        a = ~0;        /* default alpha is full */
       -
       -        p = byteaddr(img, pt);
       -        v = p[0]|(p[1]<<8)|(p[2]<<16)|(p[3]<<24);
       -        bpp = img->depth;
       -        if(bpp<8){
       -                /*
       -                 * Sub-byte greyscale pixels.
       -                 *
       -                 * We want to throw away the top pt.x%npack pixels and then use the next bpp bits
       -                 * in the bottom byte of v.  This madness is due to having big endian bits
       -                 * but little endian bytes.
       -                 */
       -                npack = 8/bpp;
       -                v >>= 8 - bpp*(pt.x%npack+1);
       -                v &= (1<<bpp)-1;
       -                r = g = b = replbits(v, bpp, 8);
       -        }else{
       -                /*
       -                 * General case.  We need to parse the channel descriptor and do what it says.
       -                 * In all channels but the color map, we replicate to 8 bits because that's the
       -                 * precision that all calculations are done at.
       -                 *
       -                 * In the case of the color map, we leave the bits alone, in case a color map
       -                 * with less than 8 bits of index is used.  This is currently disallowed, so it's
       -                 * sort of silly.
       -                 */
       -
       -                for(c=img->chan; c; c>>=8){
       -                        nbits = NBITS(c);
       -                        bits = v & ((1<<nbits)-1);
       -                        rbits = replbits(bits, nbits, 8);
       -                        v >>= nbits;
       -                        switch(TYPE(c)){
       -                        case CRed:
       -                                r = rbits;
       -                                break;
       -                        case CGreen:
       -                                g = rbits;
       -                                break;
       -                        case CBlue:
       -                                b = rbits;
       -                                break;
       -                        case CGrey:
       -                                r = g = b = rbits;
       -                                break;
       -                        case CAlpha:
       -                                a = rbits;
       -                                break;
       -                        case CMap:
       -                                p = img->cmap->cmap2rgb + 3*bits;
       -                                r = p[0];
       -                                g = p[1];
       -                                b = p[2];
       -                                break;
       -                        case CIgnore:
       -                                break;
       -                        default:
       -                                fprint(2, "unknown channel type %lud\n", TYPE(c));
       -                                abort();
       -                        }
       -                }
       -        }
       -        return rgbatopix(r, g, b, a);
       -}
       -
       -/*
       - * Return the greyscale equivalent of a pixel.
       - */
       -uchar
       -getgrey(Memimage *img, Point pt)
       -{
       -        uchar r, g, b, a;
       -        pixtorgba(getpixel(img, pt), &r, &g, &b, &a);
       -        return RGB2K(r, g, b);
       -}
       -
       -/*
       - * Return the value at pt in image, if image is interpreted
       - * as a mask.  This means the alpha channel if present, else
       - * the greyscale or its computed equivalent.
       - */
       -uchar
       -getmask(Memimage *img, Point pt)
       -{
       -        if(img->flags&Falpha)
       -                return getpixel(img, pt)>>24;
       -        else
       -                return getgrey(img, pt);
       -}
       -#undef DBG
       -
       -#define DBG if(0)
       -/*
       - * Write a pixel to img at point pt.
       - * 
       - * We do this by reading a 32-bit little endian
       - * value from p and then writing it back
       - * after tweaking the appropriate bits.  Because
       - * the data is little endian, we don't have to worry
       - * about what the actual depth is, as long as it is
       - * less than 32 bits.
       - */
       -void
       -putpixel(Memimage *img, Point pt, u32int nv)
       -{
       -        uchar r, g, b, a, *p, *q;
       -        u32int c, mask, bits, v;
       -        int bpp, sh, npack, nbits;
       -
       -        pixtorgba(nv, &r, &g, &b, &a);
       -
       -        p = byteaddr(img, pt);
       -        v = p[0]|(p[1]<<8)|(p[2]<<16)|(p[3]<<24);
       -        bpp = img->depth;
       -DBG print("v %.8lux...", v);
       -        if(bpp < 8){
       -                /*
       -                 * Sub-byte greyscale pixels.  We need to skip the leftmost pt.x%npack pixels,
       -                 * which is equivalent to skipping the rightmost npack - pt.x%npack - 1 pixels.
       -                 */        
       -                npack = 8/bpp;
       -                sh = bpp*(npack - pt.x%npack - 1);
       -                bits = RGB2K(r,g,b);
       -DBG print("repl %lux 8 %d = %lux...", bits, bpp, replbits(bits, 8, bpp));
       -                bits = replbits(bits, 8, bpp);
       -                mask = (1<<bpp)-1;
       -DBG print("bits %lux mask %lux sh %d...", bits, mask, sh);
       -                mask <<= sh;
       -                bits <<= sh;
       -DBG print("(%lux & %lux) | (%lux & %lux)", v, ~mask, bits, mask);
       -                v = (v & ~mask) | (bits & mask);
       -        } else {
       -                /*
       -                 * General case.  We need to parse the channel descriptor again.
       -                 */
       -                sh = 0;
       -                for(c=img->chan; c; c>>=8){
       -                        nbits = NBITS(c);
       -                        switch(TYPE(c)){
       -                        case CRed:
       -                                bits = r;
       -                                break;
       -                        case CGreen:
       -                                bits = g;
       -                                break;
       -                        case CBlue:
       -                                bits = b;
       -                                break;
       -                        case CGrey:
       -                                bits = RGB2K(r, g, b);
       -                                break;
       -                        case CAlpha:
       -                                bits = a;
       -                                break;
       -                        case CIgnore:
       -                                bits = 0;
       -                                break;
       -                        case CMap:
       -                                q = img->cmap->rgb2cmap;
       -                                bits = q[(r>>4)*16*16+(g>>4)*16+(b>>4)];
       -                                break;
       -                        default:
       -                                SET(bits);
       -                                fprint(2, "unknown channel type %lud\n", TYPE(c));
       -                                abort();
       -                        }
       -
       -DBG print("repl %lux 8 %d = %lux...", bits, nbits, replbits(bits, 8, nbits));
       -                        if(TYPE(c) != CMap)
       -                                bits = replbits(bits, 8, nbits);
       -                        mask = (1<<nbits)-1;
       -DBG print("bits %lux mask %lux sh %d...", bits, mask, sh);
       -                        bits <<= sh;
       -                        mask <<= sh;
       -                        v = (v & ~mask) | (bits & mask);
       -                        sh += nbits;
       -                }
       -        }
       -DBG print("v %.8lux\n", v);
       -        p[0] = v;
       -        p[1] = v>>8;
       -        p[2] = v>>16;
       -        p[3] = v>>24;        
       -}
       -#undef DBG
       -
       -#define DBG if(0)
       -void
       -drawonepixel(Memimage *dst, Point dp, Memimage *src, Point sp, Memimage *mask, Point mp)
       -{
       -        uchar m, M, sr, sg, sb, sa, sk, dr, dg, db, da, dk;
       -
       -        pixtorgba(getpixel(dst, dp), &dr, &dg, &db, &da);
       -        pixtorgba(getpixel(src, sp), &sr, &sg, &sb, &sa);
       -        m = getmask(mask, mp);
       -        M = 255-(sa*m)/255;
       -
       -DBG print("dst %x %x %x %x src %x %x %x %x m %x = ", dr,dg,db,da, sr,sg,sb,sa, m);
       -        if(dst->flags&Fgrey){
       -                /*
       -                 * We need to do the conversion to grey before the alpha calculation
       -                 * because the draw operator does this, and we need to be operating
       -                 * at the same precision so we get exactly the same answers.
       -                 */
       -                sk = RGB2K(sr, sg, sb);
       -                dk = RGB2K(dr, dg, db);
       -                dk = (sk*m + dk*M)/255;
       -                dr = dg = db = dk;
       -                da = (sa*m + da*M)/255;
       -        }else{
       -                /*
       -                 * True color alpha calculation treats all channels (including alpha)
       -                 * the same.  It might have been nice to use an array, but oh well.
       -                 */
       -                dr = (sr*m + dr*M)/255;
       -                dg = (sg*m + dg*M)/255;
       -                db = (sb*m + db*M)/255;
       -                da = (sa*m + da*M)/255;
       -        }
       -
       -DBG print("%x %x %x %x\n", dr,dg,db,da);
       -        putpixel(dst, dp, rgbatopix(dr, dg, db, da));
       -}
 (DIR) diff --git a/src/libdraw/md-ellipse.c b/src/libdraw/md-ellipse.c
       t@@ -1,247 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -
       -/*
       - * ellipse(dst, c, a, b, t, src, sp)
       - *   draws an ellipse centered at c with semiaxes a,b>=0
       - *   and semithickness t>=0, or filled if t<0.  point sp
       - *   in src maps to c in dst
       - *
       - *   very thick skinny ellipses are brushed with circles (slow)
       - *   others are approximated by filling between 2 ellipses
       - *   criterion for very thick when b<a: t/b > 0.5*x/(1-x)
       - *   where x = b/a
       - */
       -
       -typedef struct Param        Param;
       -typedef struct State        State;
       -
       -static        void        bellipse(int, State*, Param*);
       -static        void        erect(int, int, int, int, Param*);
       -static        void        eline(int, int, int, int, Param*);
       -
       -struct Param {
       -        Memimage        *dst;
       -        Memimage        *src;
       -        Point                        c;
       -        int                        t;
       -        Point                        sp;
       -        Memimage        *disc;
       -        int                        op;
       -};
       -
       -/*
       - * denote residual error by e(x,y) = b^2*x^2 + a^2*y^2 - a^2*b^2
       - * e(x,y) = 0 on ellipse, e(x,y) < 0 inside, e(x,y) > 0 outside
       - */
       -
       -struct State {
       -        int        a;
       -        int        x;
       -        vlong        a2;        /* a^2 */
       -        vlong        b2;        /* b^2 */
       -        vlong        b2x;        /* b^2 * x */
       -        vlong        a2y;        /* a^2 * y */
       -        vlong        c1;
       -        vlong        c2;        /* test criteria */
       -        vlong        ee;        /* ee = e(x+1/2,y-1/2) - (a^2+b^2)/4 */
       -        vlong        dxe;
       -        vlong        dye;
       -        vlong        d2xe;
       -        vlong        d2ye;
       -};
       -
       -static
       -State*
       -newstate(State *s, int a, int b)
       -{
       -        s->x = 0;
       -        s->a = a;
       -        s->a2 = (vlong)(a*a);
       -        s->b2 = (vlong)(b*b);
       -        s->b2x = (vlong)0;
       -        s->a2y = s->a2*(vlong)b;
       -        s->c1 = -((s->a2>>2) + (vlong)(a&1) + s->b2);
       -        s->c2 = -((s->b2>>2) + (vlong)(b&1));
       -        s->ee = -s->a2y;
       -        s->dxe = (vlong)0;
       -        s->dye = s->ee<<1;
       -        s->d2xe = s->b2<<1;
       -        s->d2ye = s->a2<<1;
       -        return s;
       -}
       -
       -/*
       - * return x coord of rightmost pixel on next scan line
       - */
       -static
       -int
       -step(State *s)
       -{
       -        while(s->x < s->a) {
       -                if(s->ee+s->b2x <= s->c1 ||        /* e(x+1,y-1/2) <= 0 */
       -                   s->ee+s->a2y <= s->c2) {        /* e(x+1/2,y) <= 0 (rare) */
       -                        s->dxe += s->d2xe;          
       -                        s->ee += s->dxe;          
       -                        s->b2x += s->b2;
       -                        s->x++;          
       -                        continue;
       -                }
       -                s->dye += s->d2ye;          
       -                s->ee += s->dye;          
       -                s->a2y -= s->a2;
       -                if(s->ee-s->a2y <= s->c2) {        /* e(x+1/2,y-1) <= 0 */
       -                        s->dxe += s->d2xe;          
       -                        s->ee += s->dxe;          
       -                        s->b2x += s->b2;
       -                        return s->x++;
       -                }
       -                break;
       -        }
       -        return s->x;          
       -}
       -
       -void
       -memellipse(Memimage *dst, Point c, int a, int b, int t, Memimage *src, Point sp, int op)
       -{
       -        State in, out;
       -        int y, inb, inx, outx, u;
       -        Param p;
       -
       -        if(a < 0)
       -                a = -a;
       -        if(b < 0)
       -                b = -b;
       -        p.dst = dst;
       -        p.src = src;
       -        p.c = c;
       -        p.t = t;
       -        p.sp = subpt(sp, c);
       -        p.disc = nil;
       -        p.op = op;
       -
       -        u = (t<<1)*(a-b);
       -        if(b<a && u>b*b || a<b && -u>a*a) {
       -/*        if(b<a&&(t<<1)>b*b/a || a<b&&(t<<1)>a*a/b)        # very thick */
       -                bellipse(b, newstate(&in, a, b), &p);
       -                return;
       -        }
       -
       -        if(t < 0) {
       -                inb = -1;
       -                newstate(&out, a, y = b);
       -        } else {        
       -                inb = b - t;
       -                newstate(&out, a+t, y = b+t);
       -        }
       -        if(t > 0)
       -                newstate(&in, a-t, inb);
       -        inx = 0;
       -        for( ; y>=0; y--) {
       -                outx = step(&out);
       -                if(y > inb) {
       -                        erect(-outx, y, outx, y, &p);
       -                        if(y != 0)
       -                                erect(-outx, -y, outx, -y, &p);
       -                        continue;
       -                }
       -                if(t > 0) {
       -                        inx = step(&in);
       -                        if(y == inb)
       -                                inx = 0;
       -                } else if(inx > outx)
       -                        inx = outx;
       -                erect(inx, y, outx, y, &p);
       -                if(y != 0)
       -                        erect(inx, -y, outx, -y, &p);
       -                erect(-outx, y, -inx, y, &p);
       -                if(y != 0)
       -                        erect(-outx, -y, -inx, -y, &p);
       -                inx = outx + 1;
       -        }
       -}
       -
       -static Point p00 = {0, 0};
       -
       -/*
       - * a brushed ellipse
       - */
       -static
       -void
       -bellipse(int y, State *s, Param *p)
       -{
       -        int t, ox, oy, x, nx;
       -
       -        t = p->t;
       -        p->disc = allocmemimage(Rect(-t,-t,t+1,t+1), GREY1);
       -        if(p->disc == nil)
       -                return;
       -        memfillcolor(p->disc, DTransparent);
       -        memellipse(p->disc, p00, t, t, -1, memopaque, p00, p->op);
       -        oy = y;
       -        ox = 0;
       -        nx = x = step(s);
       -        do {
       -                while(nx==x && y-->0)
       -                        nx = step(s);
       -                y++;
       -                eline(-x,-oy,-ox, -y, p);
       -                eline(ox,-oy,  x, -y, p);
       -                eline(-x,  y,-ox, oy, p);
       -                eline(ox,  y,  x, oy, p);
       -                ox = x+1;
       -                x = nx;
       -                y--;
       -                oy = y;
       -        } while(oy > 0);
       -}
       -
       -/*
       - * a rectangle with closed (not half-open) coordinates expressed
       - * relative to the center of the ellipse
       - */
       -static
       -void
       -erect(int x0, int y0, int x1, int y1, Param *p)
       -{
       -        Rectangle r;
       -
       -/*        print("R %d,%d %d,%d\n", x0, y0, x1, y1); */
       -        r = Rect(p->c.x+x0, p->c.y+y0, p->c.x+x1+1, p->c.y+y1+1);
       -        memdraw(p->dst, r, p->src, addpt(p->sp, r.min), memopaque, p00, p->op);
       -}
       -
       -/*
       - * a brushed point similarly specified
       - */
       -static
       -void
       -epoint(int x, int y, Param *p)
       -{
       -        Point p0;
       -        Rectangle r;
       -
       -/*        print("P%d %d,%d\n", p->t, x, y);        */
       -        p0 = Pt(p->c.x+x, p->c.y+y);
       -        r = Rpt(addpt(p0, p->disc->r.min), addpt(p0, p->disc->r.max));
       -        memdraw(p->dst, r, p->src, addpt(p->sp, r.min), p->disc, p->disc->r.min, p->op);
       -}
       -
       -/* 
       - * a brushed horizontal or vertical line similarly specified
       - */
       -static
       -void
       -eline(int x0, int y0, int x1, int y1, Param *p)
       -{
       -/*        print("L%d %d,%d %d,%d\n", p->t, x0, y0, x1, y1); */
       -        if(x1 > x0+1)
       -                erect(x0+1, y0-p->t, x1-1, y1+p->t, p);
       -        else if(y1 > y0+1)
       -                erect(x0-p->t, y0+1, x1+p->t, y1-1, p);
       -        epoint(x0, y0, p);
       -        if(x1-x0 || y1-y0)
       -                epoint(x1, y1, p);
       -}
 (DIR) diff --git a/src/libdraw/md-fillpoly.c b/src/libdraw/md-fillpoly.c
       t@@ -1,524 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -
       -typedef struct Seg        Seg;
       -
       -struct Seg
       -{
       -        Point        p0;
       -        Point        p1;
       -        long        num;
       -        long        den;
       -        long        dz;
       -        long        dzrem;
       -        long        z;
       -        long        zerr;
       -        long        d;
       -};
       -
       -static        void        zsort(Seg **seg, Seg **ep);
       -static        int        ycompare(const void*, const void*);
       -static        int        xcompare(const void*, const void*);
       -static        int        zcompare(const void*, const void*);
       -static        void        xscan(Memimage *dst, Seg **seg, Seg *segtab, int nseg, int wind, Memimage *src, Point sp, int, int, int, int);
       -static        void        yscan(Memimage *dst, Seg **seg, Seg *segtab, int nseg, int wind, Memimage *src, Point sp, int, int);
       -
       -#if 0
       -static void
       -fillcolor(Memimage *dst, int left, int right, int y, Memimage *src, Point p)
       -{
       -        int srcval;
       -
       -        USED(src);
       -        srcval = p.x;
       -        p.x = left;
       -        p.y = y;
       -        memset(byteaddr(dst, p), srcval, right-left);
       -}
       -#endif
       -
       -static void
       -fillline(Memimage *dst, int left, int right, int y, Memimage *src, Point p, int op)
       -{
       -        Rectangle r;
       -
       -        r.min.x = left;
       -        r.min.y = y;
       -        r.max.x = right;
       -        r.max.y = y+1;
       -        p.x += left;
       -        p.y += y;
       -        memdraw(dst, r, src, p, memopaque, p, op);
       -}
       -
       -static void
       -fillpoint(Memimage *dst, int x, int y, Memimage *src, Point p, int op)
       -{
       -        Rectangle r;
       -
       -        r.min.x = x;
       -        r.min.y = y;
       -        r.max.x = x+1;
       -        r.max.y = y+1;
       -        p.x += x;
       -        p.y += y;
       -        memdraw(dst, r, src, p, memopaque, p, op);
       -}
       -
       -void
       -memfillpoly(Memimage *dst, Point *vert, int nvert, int w, Memimage *src, Point sp, int op)
       -{
       -        _memfillpolysc(dst, vert, nvert, w, src, sp, 0, 0, 0, op);
       -}
       -
       -void
       -_memfillpolysc(Memimage *dst, Point *vert, int nvert, int w, Memimage *src, Point sp, int detail, int fixshift, int clipped, int op)
       -{
       -        Seg **seg, *segtab;
       -        Point p0;
       -        int i;
       -
       -        if(nvert == 0)
       -                return;
       -
       -        seg = malloc((nvert+2)*sizeof(Seg*));
       -        if(seg == nil)
       -                return;
       -        segtab = malloc((nvert+1)*sizeof(Seg));
       -        if(segtab == nil) {
       -                free(seg);
       -                return;
       -        }
       -
       -        sp.x = (sp.x - vert[0].x) >> fixshift;
       -        sp.y = (sp.y - vert[0].y) >> fixshift;
       -        p0 = vert[nvert-1];
       -        if(!fixshift) {
       -                p0.x <<= 1;
       -                p0.y <<= 1;
       -        }
       -        for(i = 0; i < nvert; i++) {
       -                segtab[i].p0 = p0;
       -                p0 = vert[i];
       -                if(!fixshift) {
       -                        p0.x <<= 1;
       -                        p0.y <<= 1;
       -                }
       -                segtab[i].p1 = p0;
       -                segtab[i].d = 1;
       -        }
       -        if(!fixshift)
       -                fixshift = 1;
       -
       -        xscan(dst, seg, segtab, nvert, w, src, sp, detail, fixshift, clipped, op);
       -        if(detail)
       -                yscan(dst, seg, segtab, nvert, w, src, sp, fixshift, op);
       -
       -        free(seg);
       -        free(segtab);
       -}
       -
       -static long
       -mod(long x, long y)
       -{
       -        long z;
       -
       -        z = x%y;
       -        if((long)(((ulong)z)^((ulong)y)) > 0 || z == 0)
       -                return z;
       -        return z + y;
       -}
       -
       -static long
       -sdiv(long x, long y)
       -{
       -        if((long)(((ulong)x)^((ulong)y)) >= 0 || x == 0)
       -                return x/y;
       -
       -        return (x+((y>>30)|1))/y-1;
       -}
       -
       -static long
       -smuldivmod(long x, long y, long z, long *mod)
       -{
       -        vlong vx;
       -
       -        if(x == 0 || y == 0){
       -                *mod = 0;
       -                return 0;
       -        }
       -        vx = x;
       -        vx *= y;
       -        *mod = vx % z;
       -        if(*mod < 0)
       -                *mod += z;        /* z is always >0 */
       -        if((vx < 0) == (z < 0))
       -                return vx/z;
       -        return -((-vx)/z);
       -}
       -
       -static void
       -xscan(Memimage *dst, Seg **seg, Seg *segtab, int nseg, int wind, Memimage *src, Point sp, int detail, int fixshift, int clipped, int op)
       -{
       -        long y, maxy, x, x2, xerr, xden, onehalf;
       -        Seg **ep, **next, **p, **q, *s;
       -        long n, i, iy, cnt, ix, ix2, minx, maxx;
       -        Point pt;
       -        void        (*fill)(Memimage*, int, int, int, Memimage*, Point, int);
       -
       -        fill = fillline;
       -/*
       - * This can only work on 8-bit destinations, since fillcolor is
       - * just using memset on sp.x.
       - *
       - * I'd rather not even enable it then, since then if the general
       - * code is too slow, someone will come up with a better improvement
       - * than this sleazy hack.        -rsc
       - *
       -        if(clipped && (src->flags&Frepl) && src->depth==8 && Dx(src->r)==1 && Dy(src->r)==1) {
       -                fill = fillcolor;
       -                sp.x = membyteval(src);
       -        }
       - *
       - */
       -        USED(clipped);
       -
       -
       -        for(i=0, s=segtab, p=seg; i<nseg; i++, s++) {
       -                *p = s;
       -                if(s->p0.y == s->p1.y)
       -                        continue;
       -                if(s->p0.y > s->p1.y) {
       -                        pt = s->p0;
       -                        s->p0 = s->p1;
       -                        s->p1 = pt;
       -                        s->d = -s->d;
       -                }
       -                s->num = s->p1.x - s->p0.x;
       -                s->den = s->p1.y - s->p0.y;
       -                s->dz = sdiv(s->num, s->den) << fixshift;
       -                s->dzrem = mod(s->num, s->den) << fixshift;
       -                s->dz += sdiv(s->dzrem, s->den);
       -                s->dzrem = mod(s->dzrem, s->den);
       -                p++;
       -        }
       -        n = p-seg;
       -        if(n == 0)
       -                return;
       -        *p = 0;
       -        qsort(seg, p-seg , sizeof(Seg*), ycompare);
       -
       -        onehalf = 0;
       -        if(fixshift)
       -                onehalf = 1 << (fixshift-1);
       -
       -        minx = dst->clipr.min.x;
       -        maxx = dst->clipr.max.x;
       -
       -        y = seg[0]->p0.y;
       -        if(y < (dst->clipr.min.y << fixshift))
       -                y = dst->clipr.min.y << fixshift;
       -        iy = (y + onehalf) >> fixshift;
       -        y = (iy << fixshift) + onehalf;
       -        maxy = dst->clipr.max.y << fixshift;
       -
       -        ep = next = seg;
       -
       -        while(y<maxy) {
       -                for(q = p = seg; p < ep; p++) {
       -                        s = *p;
       -                        if(s->p1.y < y)
       -                                continue;
       -                        s->z += s->dz;
       -                        s->zerr += s->dzrem;
       -                        if(s->zerr >= s->den) {
       -                                s->z++;
       -                                s->zerr -= s->den;
       -                                if(s->zerr < 0 || s->zerr >= s->den)
       -                                        print("bad ratzerr1: %ld den %ld dzrem %ld\n", s->zerr, s->den, s->dzrem);
       -                        }
       -                        *q++ = s;
       -                }
       -
       -                for(p = next; *p; p++) {
       -                        s = *p;
       -                        if(s->p0.y >= y)
       -                                break;
       -                        if(s->p1.y < y)
       -                                continue;
       -                        s->z = s->p0.x;
       -                        s->z += smuldivmod(y - s->p0.y, s->num, s->den, &s->zerr);
       -                        if(s->zerr < 0 || s->zerr >= s->den)
       -                                print("bad ratzerr2: %ld den %ld ratdzrem %ld\n", s->zerr, s->den, s->dzrem);
       -                        *q++ = s;
       -                }
       -                ep = q;
       -                next = p;
       -
       -                if(ep == seg) {
       -                        if(*next == 0)
       -                                break;
       -                        iy = (next[0]->p0.y + onehalf) >> fixshift;
       -                        y = (iy << fixshift) + onehalf;
       -                        continue;
       -                }
       -
       -                zsort(seg, ep);
       -
       -                for(p = seg; p < ep; p++) {
       -                        cnt = 0;
       -                        x = p[0]->z;
       -                        xerr = p[0]->zerr;
       -                        xden = p[0]->den;
       -                        ix = (x + onehalf) >> fixshift;
       -                        if(ix >= maxx)
       -                                break;
       -                        if(ix < minx)
       -                                ix = minx;
       -                        cnt += p[0]->d;
       -                        p++;
       -                        for(;;) {
       -                                if(p == ep) {
       -                                        print("xscan: fill to infinity");
       -                                        return;
       -                                }
       -                                cnt += p[0]->d;
       -                                if((cnt&wind) == 0)
       -                                        break;
       -                                p++;
       -                        }
       -                        x2 = p[0]->z;
       -                        ix2 = (x2 + onehalf) >> fixshift;
       -                        if(ix2 <= minx)
       -                                continue;
       -                        if(ix2 > maxx)
       -                                ix2 = maxx;
       -                        if(ix == ix2 && detail) {
       -                                if(xerr*p[0]->den + p[0]->zerr*xden > p[0]->den*xden)
       -                                        x++;
       -                                ix = (x + x2) >> (fixshift+1);
       -                                ix2 = ix+1;
       -                        }
       -                        (*fill)(dst, ix, ix2, iy, src, sp, op);
       -                }
       -                y += (1<<fixshift);
       -                iy++;
       -        }
       -}
       -
       -static void
       -yscan(Memimage *dst, Seg **seg, Seg *segtab, int nseg, int wind, Memimage *src, Point sp, int fixshift, int op)
       -{
       -        long x, maxx, y, y2, yerr, yden, onehalf;
       -        Seg **ep, **next, **p, **q, *s;
       -        int n, i, ix, cnt, iy, iy2, miny, maxy;
       -        Point pt;
       -
       -        for(i=0, s=segtab, p=seg; i<nseg; i++, s++) {
       -                *p = s;
       -                if(s->p0.x == s->p1.x)
       -                        continue;
       -                if(s->p0.x > s->p1.x) {
       -                        pt = s->p0;
       -                        s->p0 = s->p1;
       -                        s->p1 = pt;
       -                        s->d = -s->d;
       -                }
       -                s->num = s->p1.y - s->p0.y;
       -                s->den = s->p1.x - s->p0.x;
       -                s->dz = sdiv(s->num, s->den) << fixshift;
       -                s->dzrem = mod(s->num, s->den) << fixshift;
       -                s->dz += sdiv(s->dzrem, s->den);
       -                s->dzrem = mod(s->dzrem, s->den);
       -                p++;
       -        }
       -        n = p-seg;
       -        if(n == 0)
       -                return;
       -        *p = 0;
       -        qsort(seg, n , sizeof(Seg*), xcompare);
       -
       -        onehalf = 0;
       -        if(fixshift)
       -                onehalf = 1 << (fixshift-1);
       -
       -        miny = dst->clipr.min.y;
       -        maxy = dst->clipr.max.y;
       -
       -        x = seg[0]->p0.x;
       -        if(x < (dst->clipr.min.x << fixshift))
       -                x = dst->clipr.min.x << fixshift;
       -        ix = (x + onehalf) >> fixshift;
       -        x = (ix << fixshift) + onehalf;
       -        maxx = dst->clipr.max.x << fixshift;
       -
       -        ep = next = seg;
       -
       -        while(x<maxx) {
       -                for(q = p = seg; p < ep; p++) {
       -                        s = *p;
       -                        if(s->p1.x < x)
       -                                continue;
       -                        s->z += s->dz;
       -                        s->zerr += s->dzrem;
       -                        if(s->zerr >= s->den) {
       -                                s->z++;
       -                                s->zerr -= s->den;
       -                                if(s->zerr < 0 || s->zerr >= s->den)
       -                                        print("bad ratzerr1: %ld den %ld ratdzrem %ld\n", s->zerr, s->den, s->dzrem);
       -                        }
       -                        *q++ = s;
       -                }
       -
       -                for(p = next; *p; p++) {
       -                        s = *p;
       -                        if(s->p0.x >= x)
       -                                break;
       -                        if(s->p1.x < x)
       -                                continue;
       -                        s->z = s->p0.y;
       -                        s->z += smuldivmod(x - s->p0.x, s->num, s->den, &s->zerr);
       -                        if(s->zerr < 0 || s->zerr >= s->den)
       -                                print("bad ratzerr2: %ld den %ld ratdzrem %ld\n", s->zerr, s->den, s->dzrem);
       -                        *q++ = s;
       -                }
       -                ep = q;
       -                next = p;
       -
       -                if(ep == seg) {
       -                        if(*next == 0)
       -                                break;
       -                        ix = (next[0]->p0.x + onehalf) >> fixshift;
       -                        x = (ix << fixshift) + onehalf;
       -                        continue;
       -                }
       -
       -                zsort(seg, ep);
       -
       -                for(p = seg; p < ep; p++) {
       -                        cnt = 0;
       -                        y = p[0]->z;
       -                        yerr = p[0]->zerr;
       -                        yden = p[0]->den;
       -                        iy = (y + onehalf) >> fixshift;
       -                        if(iy >= maxy)
       -                                break;
       -                        if(iy < miny)
       -                                iy = miny;
       -                        cnt += p[0]->d;
       -                        p++;
       -                        for(;;) {
       -                                if(p == ep) {
       -                                        print("yscan: fill to infinity");
       -                                        return;
       -                                }
       -                                cnt += p[0]->d;
       -                                if((cnt&wind) == 0)
       -                                        break;
       -                                p++;
       -                        }
       -                        y2 = p[0]->z;
       -                        iy2 = (y2 + onehalf) >> fixshift;
       -                        if(iy2 <= miny)
       -                                continue;
       -                        if(iy2 > maxy)
       -                                iy2 = maxy;
       -                        if(iy == iy2) {
       -                                if(yerr*p[0]->den + p[0]->zerr*yden > p[0]->den*yden)
       -                                        y++;
       -                                iy = (y + y2) >> (fixshift+1);
       -                                fillpoint(dst, ix, iy, src, sp, op);
       -                        }
       -                }
       -                x += (1<<fixshift);
       -                ix++;
       -        }
       -}
       -
       -static void
       -zsort(Seg **seg, Seg **ep)
       -{
       -        int done;
       -        Seg **q, **p, *s;
       -
       -        if(ep-seg < 20) {
       -                /* bubble sort by z - they should be almost sorted already */
       -                q = ep;
       -                do {
       -                        done = 1;
       -                        q--;
       -                        for(p = seg; p < q; p++) {
       -                                if(p[0]->z > p[1]->z) {
       -                                        s = p[0];
       -                                        p[0] = p[1];
       -                                        p[1] = s;
       -                                        done = 0;
       -                                }
       -                        }
       -                } while(!done);
       -        } else {
       -                q = ep-1;
       -                for(p = seg; p < q; p++) {
       -                        if(p[0]->z > p[1]->z) {
       -                                qsort(seg, ep-seg, sizeof(Seg*), zcompare);
       -                                break;
       -                        }
       -                }
       -        }
       -}
       -
       -static int
       -ycompare(const void *a, const void *b)
       -{
       -        Seg **s0, **s1;
       -        long y0, y1;
       -
       -        s0 = (Seg**)a;
       -        s1 = (Seg**)b;
       -        y0 = (*s0)->p0.y;
       -        y1 = (*s1)->p0.y;
       -
       -        if(y0 < y1)
       -                return -1;
       -        if(y0 == y1)
       -                return 0;
       -        return 1;
       -}
       -
       -static int
       -xcompare(const void *a, const void *b)
       -{
       -        Seg **s0, **s1;
       -        long x0, x1;
       -
       -        s0 = (Seg**)a;
       -        s1 = (Seg**)b;
       -        x0 = (*s0)->p0.x;
       -        x1 = (*s1)->p0.x;
       -
       -        if(x0 < x1)
       -                return -1;
       -        if(x0 == x1)
       -                return 0;
       -        return 1;
       -}
       -
       -static int
       -zcompare(const void *a, const void *b)
       -{
       -        Seg **s0, **s1;
       -        long z0, z1;
       -
       -        s0 = (Seg**)a;
       -        s1 = (Seg**)b;
       -        z0 = (*s0)->z;
       -        z1 = (*s1)->z;
       -
       -        if(z0 < z1)
       -                return -1;
       -        if(z0 == z1)
       -                return 0;
       -        return 1;
       -}
 (DIR) diff --git a/src/libdraw/md-hwdraw.c b/src/libdraw/md-hwdraw.c
       t@@ -1,12 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -
       -int
       -hwdraw(Memdrawparam *p)
       -{
       -        USED(p);
       -        return 0;        /* could not satisfy request */
       -}
       -
 (DIR) diff --git a/src/libdraw/md-iprint.c b/src/libdraw/md-iprint.c
       t@@ -1,12 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -
       -int
       -iprint(char *fmt,...)
       -{
       -        USED(fmt);
       -        return -1;
       -}
       -
 (DIR) diff --git a/src/libdraw/md-line.c b/src/libdraw/md-line.c
       t@@ -1,486 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -
       -enum
       -{
       -        Arrow1 = 8,
       -        Arrow2 = 10,
       -        Arrow3 = 3
       -};
       -
       -/*
       -static
       -int
       -lmin(int a, int b)
       -{
       -        if(a < b)
       -                return a;
       -        return b;
       -}
       -*/
       -
       -static
       -int
       -lmax(int a, int b)
       -{
       -        if(a > b)
       -                return a;
       -        return b;
       -}
       -
       -#ifdef NOTUSED
       -/*
       - * Rather than line clip, we run the Bresenham loop over the full line,
       - * and clip on each pixel.  This is more expensive but means that
       - * lines look the same regardless of how the windowing has tiled them.
       - * For speed, we check for clipping outside the loop and make the
       - * test easy when possible.
       - */
       -
       -static
       -void
       -horline1(Memimage *dst, Point p0, Point p1, int srcval, Rectangle clipr)
       -{
       -        int x, y, dy, deltay, deltax, maxx;
       -        int dd, easy, e, bpp, m, m0;
       -        uchar *d;
       -
       -        deltax = p1.x - p0.x;
       -        deltay = p1.y - p0.y;
       -        dd = dst->width*sizeof(u32int);
       -        dy = 1;
       -        if(deltay < 0){
       -                dd = -dd;
       -                deltay = -deltay;
       -                dy = -1;
       -        }
       -        maxx = lmin(p1.x, clipr.max.x-1);
       -        bpp = dst->depth;
       -        m0 = 0xFF^(0xFF>>bpp);
       -        m = m0 >> (p0.x&(7/dst->depth))*bpp;
       -        easy = ptinrect(p0, clipr) && ptinrect(p1, clipr);
       -        e = 2*deltay - deltax;
       -        y = p0.y;
       -        d = byteaddr(dst, p0);
       -        deltay *= 2;
       -        deltax = deltay - 2*deltax;
       -        for(x=p0.x; x<=maxx; x++){
       -                if(easy || (clipr.min.x<=x && clipr.min.y<=y && y<clipr.max.y))
       -                        *d ^= (*d^srcval) & m;
       -                if(e > 0){
       -                        y += dy;
       -                        d += dd;
       -                        e += deltax;
       -                }else
       -                        e += deltay;
       -                d++;
       -                m >>= bpp;
       -                if(m == 0)
       -                        m = m0;
       -        }
       -}
       -
       -static
       -void
       -verline1(Memimage *dst, Point p0, Point p1, int srcval, Rectangle clipr)
       -{
       -        int x, y, deltay, deltax, maxy;
       -        int easy, e, bpp, m, m0, dd;
       -        uchar *d;
       -
       -        deltax = p1.x - p0.x;
       -        deltay = p1.y - p0.y;
       -        dd = 1;
       -        if(deltax < 0){
       -                dd = -1;
       -                deltax = -deltax;
       -        }
       -        maxy = lmin(p1.y, clipr.max.y-1);
       -        bpp = dst->depth;
       -        m0 = 0xFF^(0xFF>>bpp);
       -        m = m0 >> (p0.x&(7/dst->depth))*bpp;
       -        easy = ptinrect(p0, clipr) && ptinrect(p1, clipr);
       -        e = 2*deltax - deltay;
       -        x = p0.x;
       -        d = byteaddr(dst, p0);
       -        deltax *= 2;
       -        deltay = deltax - 2*deltay;
       -        for(y=p0.y; y<=maxy; y++){
       -                if(easy || (clipr.min.y<=y && clipr.min.x<=x && x<clipr.max.x))
       -                        *d ^= (*d^srcval) & m;
       -                if(e > 0){
       -                        x += dd;
       -                        d += dd;
       -                        e += deltay;
       -                }else
       -                        e += deltax;
       -                d += dst->width*sizeof(u32int);
       -                m >>= bpp;
       -                if(m == 0)
       -                        m = m0;
       -        }
       -}
       -
       -static
       -void
       -horliner(Memimage *dst, Point p0, Point p1, Memimage *src, Point dsrc, Rectangle clipr)
       -{
       -        int x, y, sx, sy, deltay, deltax, minx, maxx;
       -        int bpp, m, m0;
       -        uchar *d, *s;
       -
       -        deltax = p1.x - p0.x;
       -        deltay = p1.y - p0.y;
       -        sx = drawreplxy(src->r.min.x, src->r.max.x, p0.x+dsrc.x);
       -        minx = lmax(p0.x, clipr.min.x);
       -        maxx = lmin(p1.x, clipr.max.x-1);
       -        bpp = dst->depth;
       -        m0 = 0xFF^(0xFF>>bpp);
       -        m = m0 >> (minx&(7/dst->depth))*bpp;
       -        for(x=minx; x<=maxx; x++){
       -                y = p0.y + (deltay*(x-p0.x)+deltax/2)/deltax;
       -                if(clipr.min.y<=y && y<clipr.max.y){
       -                        d = byteaddr(dst, Pt(x, y));
       -                        sy = drawreplxy(src->r.min.y, src->r.max.y, y+dsrc.y);
       -                        s = byteaddr(src, Pt(sx, sy));
       -                        *d ^= (*d^*s) & m;
       -                }
       -                if(++sx >= src->r.max.x)
       -                        sx = src->r.min.x;
       -                m >>= bpp;
       -                if(m == 0)
       -                        m = m0;
       -        }
       -}
       -
       -static
       -void
       -verliner(Memimage *dst, Point p0, Point p1, Memimage *src, Point dsrc, Rectangle clipr)
       -{
       -        int x, y, sx, sy, deltay, deltax, miny, maxy;
       -        int bpp, m, m0;
       -        uchar *d, *s;
       -
       -        deltax = p1.x - p0.x;
       -        deltay = p1.y - p0.y;
       -        sy = drawreplxy(src->r.min.y, src->r.max.y, p0.y+dsrc.y);
       -        miny = lmax(p0.y, clipr.min.y);
       -        maxy = lmin(p1.y, clipr.max.y-1);
       -        bpp = dst->depth;
       -        m0 = 0xFF^(0xFF>>bpp);
       -        for(y=miny; y<=maxy; y++){
       -                if(deltay == 0)        /* degenerate line */
       -                        x = p0.x;
       -                else
       -                        x = p0.x + (deltax*(y-p0.y)+deltay/2)/deltay;
       -                if(clipr.min.x<=x && x<clipr.max.x){
       -                        m = m0 >> (x&(7/dst->depth))*bpp;
       -                        d = byteaddr(dst, Pt(x, y));
       -                        sx = drawreplxy(src->r.min.x, src->r.max.x, x+dsrc.x);
       -                        s = byteaddr(src, Pt(sx, sy));
       -                        *d ^= (*d^*s) & m;
       -                }
       -                if(++sy >= src->r.max.y)
       -                        sy = src->r.min.y;
       -        }
       -}
       -
       -static
       -void
       -horline(Memimage *dst, Point p0, Point p1, Memimage *src, Point dsrc, Rectangle clipr)
       -{
       -        int x, y, deltay, deltax, minx, maxx;
       -        int bpp, m, m0;
       -        uchar *d, *s;
       -
       -        deltax = p1.x - p0.x;
       -        deltay = p1.y - p0.y;
       -        minx = lmax(p0.x, clipr.min.x);
       -        maxx = lmin(p1.x, clipr.max.x-1);
       -        bpp = dst->depth;
       -        m0 = 0xFF^(0xFF>>bpp);
       -        m = m0 >> (minx&(7/dst->depth))*bpp;
       -        for(x=minx; x<=maxx; x++){
       -                y = p0.y + (deltay*(x-p0.x)+deltay/2)/deltax;
       -                if(clipr.min.y<=y && y<clipr.max.y){
       -                        d = byteaddr(dst, Pt(x, y));
       -                        s = byteaddr(src, addpt(dsrc, Pt(x, y)));
       -                        *d ^= (*d^*s) & m;
       -                }
       -                m >>= bpp;
       -                if(m == 0)
       -                        m = m0;
       -        }
       -}
       -
       -static
       -void
       -verline(Memimage *dst, Point p0, Point p1, Memimage *src, Point dsrc, Rectangle clipr)
       -{
       -        int x, y, deltay, deltax, miny, maxy;
       -        int bpp, m, m0;
       -        uchar *d, *s;
       -
       -        deltax = p1.x - p0.x;
       -        deltay = p1.y - p0.y;
       -        miny = lmax(p0.y, clipr.min.y);
       -        maxy = lmin(p1.y, clipr.max.y-1);
       -        bpp = dst->depth;
       -        m0 = 0xFF^(0xFF>>bpp);
       -        for(y=miny; y<=maxy; y++){
       -                if(deltay == 0)        /* degenerate line */
       -                        x = p0.x;
       -                else
       -                        x = p0.x + deltax*(y-p0.y)/deltay;
       -                if(clipr.min.x<=x && x<clipr.max.x){
       -                        m = m0 >> (x&(7/dst->depth))*bpp;
       -                        d = byteaddr(dst, Pt(x, y));
       -                        s = byteaddr(src, addpt(dsrc, Pt(x, y)));
       -                        *d ^= (*d^*s) & m;
       -                }
       -        }
       -}
       -#endif /* NOTUSED */
       -
       -static Memimage*
       -membrush(int radius)
       -{
       -        static Memimage *brush;
       -        static int brushradius;
       -
       -        if(brush==nil || brushradius!=radius){
       -                freememimage(brush);
       -                brush = allocmemimage(Rect(0, 0, 2*radius+1, 2*radius+1), memopaque->chan);
       -                if(brush != nil){
       -                        memfillcolor(brush, DTransparent);        /* zeros */
       -                        memellipse(brush, Pt(radius, radius), radius, radius, -1, memopaque, Pt(radius, radius), S);
       -                }
       -                brushradius = radius;
       -        }
       -        return brush;
       -}
       -
       -static
       -void
       -discend(Point p, int radius, Memimage *dst, Memimage *src, Point dsrc, int op)
       -{
       -        Memimage *disc;
       -        Rectangle r;
       -
       -        disc = membrush(radius);
       -        if(disc != nil){
       -                r.min.x = p.x - radius;
       -                r.min.y = p.y - radius;
       -                r.max.x = p.x + radius+1;
       -                r.max.y = p.y + radius+1;
       -                memdraw(dst, r, src, addpt(r.min, dsrc), disc, Pt(0,0), op);
       -        }
       -}
       -
       -static
       -void
       -arrowend(Point tip, Point *pp, int end, int sin, int cos, int radius)
       -{
       -        int x1, x2, x3;
       -
       -        /* before rotation */
       -        if(end == Endarrow){
       -                x1 = Arrow1;
       -                x2 = Arrow2;
       -                x3 = Arrow3;
       -        }else{
       -                x1 = (end>>5) & 0x1FF;        /* distance along line from end of line to tip */
       -                x2 = (end>>14) & 0x1FF;        /* distance along line from barb to tip */
       -                x3 = (end>>23) & 0x1FF;        /* distance perpendicular from edge of line to barb */
       -        }
       -
       -        /* comments follow track of right-facing arrowhead */
       -        pp->x = tip.x+((2*radius+1)*sin/2-x1*cos);                /* upper side of shaft */
       -        pp->y = tip.y-((2*radius+1)*cos/2+x1*sin);
       -        pp++;
       -        pp->x = tip.x+((2*radius+2*x3+1)*sin/2-x2*cos);                /* upper barb */
       -        pp->y = tip.y-((2*radius+2*x3+1)*cos/2+x2*sin);
       -        pp++;
       -        pp->x = tip.x;
       -        pp->y = tip.y;
       -        pp++;
       -        pp->x = tip.x+(-(2*radius+2*x3+1)*sin/2-x2*cos);        /* lower barb */
       -        pp->y = tip.y-(-(2*radius+2*x3+1)*cos/2+x2*sin);
       -        pp++;
       -        pp->x = tip.x+(-(2*radius+1)*sin/2-x1*cos);                /* lower side of shaft */
       -        pp->y = tip.y+((2*radius+1)*cos/2-x1*sin);
       -}
       -
       -void
       -_memimageline(Memimage *dst, Point p0, Point p1, int end0, int end1, int radius, Memimage *src, Point sp, Rectangle clipr, int op)
       -{
       -        /*
       -         * BUG: We should really really pick off purely horizontal and purely
       -         * vertical lines and handle them separately with calls to memimagedraw
       -         * on rectangles.
       -         */
       -
       -        int hor;
       -        int sin, cos, dx, dy, t;
       -        Rectangle oclipr, r;
       -        Point q, pts[10], *pp, d;
       -
       -        if(radius < 0)
       -                return;
       -        if(rectclip(&clipr, dst->r) == 0)
       -                return;
       -        if(rectclip(&clipr, dst->clipr) == 0)
       -                return;
       -        d = subpt(sp, p0);
       -        if(rectclip(&clipr, rectsubpt(src->clipr, d)) == 0)
       -                return;
       -        if((src->flags&Frepl)==0 && rectclip(&clipr, rectsubpt(src->r, d))==0)
       -                return;
       -        /* this means that only verline() handles degenerate lines (p0==p1) */
       -        hor = (abs(p1.x-p0.x) > abs(p1.y-p0.y));
       -        /*
       -         * Clipping is a little peculiar.  We can't use Sutherland-Cohen
       -         * clipping because lines are wide.  But this is probably just fine:
       -         * we do all math with the original p0 and p1, but clip when deciding
       -         * what pixels to draw.  This means the layer code can call this routine,
       -         * using clipr to define the region being written, and get the same set
       -         * of pixels regardless of the dicing.
       -         */
       -        if((hor && p0.x>p1.x) || (!hor && p0.y>p1.y)){
       -                q = p0;
       -                p0 = p1;
       -                p1 = q;
       -                t = end0;
       -                end0 = end1;
       -                end1 = t;
       -        }
       -
       -        if((p0.x == p1.x || p0.y == p1.y) && (end0&0x1F) == Endsquare && (end1&0x1F) == Endsquare){
       -                r.min = p0;
       -                r.max = p1;
       -                if(p0.x == p1.x){
       -                        r.min.x -= radius;
       -                        r.max.x += radius+1;
       -                }
       -                else{
       -                        r.min.y -= radius;
       -                        r.max.y += radius+1;
       -                }
       -                oclipr = dst->clipr;
       -                dst->clipr = clipr;
       -                memimagedraw(dst, r, src, sp, memopaque, sp, op);
       -                dst->clipr = oclipr;
       -                return;
       -        }
       -
       -/*    Hard: */
       -        /* draw thick line using polygon fill */
       -        icossin2(p1.x-p0.x, p1.y-p0.y, &cos, &sin);
       -        dx = (sin*(2*radius+1))/2;
       -        dy = (cos*(2*radius+1))/2;
       -        pp = pts;
       -        oclipr = dst->clipr;
       -        dst->clipr = clipr;
       -        q.x = ICOSSCALE*p0.x+ICOSSCALE/2-cos/2;
       -        q.y = ICOSSCALE*p0.y+ICOSSCALE/2-sin/2;
       -        switch(end0 & 0x1F){
       -        case Enddisc:
       -                discend(p0, radius, dst, src, d, op);
       -                /* fall through */
       -        case Endsquare:
       -        default:
       -                pp->x = q.x-dx;
       -                pp->y = q.y+dy;
       -                pp++;
       -                pp->x = q.x+dx;
       -                pp->y = q.y-dy;
       -                pp++;
       -                break;
       -        case Endarrow:
       -                arrowend(q, pp, end0, -sin, -cos, radius);
       -                _memfillpolysc(dst, pts, 5, ~0, src, addpt(pts[0], mulpt(d, ICOSSCALE)), 1, 10, 1, op);
       -                pp[1] = pp[4];
       -                pp += 2;
       -        }
       -        q.x = ICOSSCALE*p1.x+ICOSSCALE/2+cos/2;
       -        q.y = ICOSSCALE*p1.y+ICOSSCALE/2+sin/2;
       -        switch(end1 & 0x1F){
       -        case Enddisc:
       -                discend(p1, radius, dst, src, d, op);
       -                /* fall through */
       -        case Endsquare:
       -        default:
       -                pp->x = q.x+dx;
       -                pp->y = q.y-dy;
       -                pp++;
       -                pp->x = q.x-dx;
       -                pp->y = q.y+dy;
       -                pp++;
       -                break;
       -        case Endarrow:
       -                arrowend(q, pp, end1, sin, cos, radius);
       -                _memfillpolysc(dst, pp, 5, ~0, src, addpt(pts[0], mulpt(d, ICOSSCALE)), 1, 10, 1, op);
       -                pp[1] = pp[4];
       -                pp += 2;
       -        }
       -        _memfillpolysc(dst, pts, pp-pts, ~0, src, addpt(pts[0], mulpt(d, ICOSSCALE)), 0, 10, 1, op);
       -        dst->clipr = oclipr;
       -        return;
       -}
       -
       -void
       -memimageline(Memimage *dst, Point p0, Point p1, int end0, int end1, int radius, Memimage *src, Point sp, int op)
       -{
       -        _memimageline(dst, p0, p1, end0, end1, radius, src, sp, dst->clipr, op);
       -}
       -
       -/*
       - * Simple-minded conservative code to compute bounding box of line.
       - * Result is probably a little larger than it needs to be.
       - */
       -static
       -void
       -addbbox(Rectangle *r, Point p)
       -{
       -        if(r->min.x > p.x)
       -                r->min.x = p.x;
       -        if(r->min.y > p.y)
       -                r->min.y = p.y;
       -        if(r->max.x < p.x+1)
       -                r->max.x = p.x+1;
       -        if(r->max.y < p.y+1)
       -                r->max.y = p.y+1;
       -}
       -
       -int
       -memlineendsize(int end)
       -{
       -        int x3;
       -
       -        if((end&0x3F) != Endarrow)
       -                return 0;
       -        if(end == Endarrow)
       -                x3 = Arrow3;
       -        else
       -                x3 = (end>>23) & 0x1FF;
       -        return x3;
       -}
       -
       -Rectangle
       -memlinebbox(Point p0, Point p1, int end0, int end1, int radius)
       -{
       -        Rectangle r, r1;
       -        int extra;
       -
       -        r.min.x = 10000000;
       -        r.min.y = 10000000;
       -        r.max.x = -10000000;
       -        r.max.y = -10000000;
       -        extra = lmax(memlineendsize(end0), memlineendsize(end1));
       -        r1 = insetrect(canonrect(Rpt(p0, p1)), -(radius+extra));
       -        addbbox(&r, r1.min);
       -        addbbox(&r, r1.max);
       -        return r;
       -}
 (DIR) diff --git a/src/libdraw/md-load.c b/src/libdraw/md-load.c
       t@@ -1,72 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -
       -int
       -_loadmemimage(Memimage *i, Rectangle r, uchar *data, int ndata)
       -{
       -        int y, l, lpart, rpart, mx, m, mr;
       -        uchar *q;
       -
       -        if(!rectinrect(r, i->r))
       -                return -1;
       -        l = bytesperline(r, i->depth);
       -        if(ndata < l*Dy(r))
       -                return -1;
       -        ndata = l*Dy(r);
       -        q = byteaddr(i, r.min);
       -        mx = 7/i->depth;
       -        lpart = (r.min.x & mx) * i->depth;
       -        rpart = (r.max.x & mx) * i->depth;
       -        m = 0xFF >> lpart;
       -        /* may need to do bit insertion on edges */
       -        if(l == 1){        /* all in one byte */
       -                if(rpart)
       -                        m ^= 0xFF >> rpart;
       -                for(y=r.min.y; y<r.max.y; y++){
       -                        *q ^= (*data^*q) & m;
       -                        q += i->width*sizeof(u32int);
       -                        data++;
       -                }
       -                return ndata;
       -        }
       -        if(lpart==0 && rpart==0){        /* easy case */
       -                for(y=r.min.y; y<r.max.y; y++){
       -                        memmove(q, data, l);
       -                        q += i->width*sizeof(u32int);
       -                        data += l;
       -                }
       -                return ndata;
       -        }
       -        mr = 0xFF ^ (0xFF >> rpart);
       -        if(lpart!=0 && rpart==0){
       -                for(y=r.min.y; y<r.max.y; y++){
       -                        *q ^= (*data^*q) & m;
       -                        if(l > 1)
       -                                memmove(q+1, data+1, l-1);
       -                        q += i->width*sizeof(u32int);
       -                        data += l;
       -                }
       -                return ndata;
       -        }
       -        if(lpart==0 && rpart!=0){
       -                for(y=r.min.y; y<r.max.y; y++){
       -                        if(l > 1)
       -                                memmove(q, data, l-1);
       -                        q[l-1] ^= (data[l-1]^q[l-1]) & mr;
       -                        q += i->width*sizeof(u32int);
       -                        data += l;
       -                }
       -                return ndata;
       -        }
       -        for(y=r.min.y; y<r.max.y; y++){
       -                *q ^= (*data^*q) & m;
       -                if(l > 2)
       -                        memmove(q+1, data+1, l-2);
       -                q[l-1] ^= (data[l-1]^q[l-1]) & mr;
       -                q += i->width*sizeof(u32int);
       -                data += l;
       -        }
       -        return ndata;
       -}
 (DIR) diff --git a/src/libdraw/md-mkcmap.c b/src/libdraw/md-mkcmap.c
       t@@ -1,79 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -
       -/*
       -struct Memcmap
       -{
       -        uchar        cmap2rgb[3*256];
       -        uchar        rgb2cmap[16*16*16];
       -};
       -*/
       -
       -static Memcmap*
       -mkcmap(void)
       -{
       -        static Memcmap def;
       -
       -        int i, rgb, r, g, b;
       -
       -        for(i=0; i<256; i++){
       -                rgb = cmap2rgb(i);
       -                r = (rgb>>16)&0xff;
       -                g = (rgb>>8)&0xff;
       -                b = rgb&0xff;
       -                def.cmap2rgb[3*i] = r;
       -                def.cmap2rgb[3*i+1] = g;
       -                def.cmap2rgb[3*i+2] = b;
       -        }
       -
       -        for(r=0; r<16; r++)
       -        for(g=0; g<16; g++)
       -        for(b=0; b<16; b++)
       -                def.rgb2cmap[r*16*16+g*16+b] = rgb2cmap(r*0x11, g*0x11, b*0x11);
       -        return &def;
       -}
       -
       -void
       -main(int argc, char **argv)
       -{
       -        Memcmap *c;
       -        int i, j, inferno;
       -
       -        inferno = 0;
       -        ARGBEGIN{
       -        case 'i':
       -                inferno = 1;
       -        }ARGEND
       -
       -        memimageinit();
       -        c = mkcmap();
       -        if(!inferno)
       -                print("#include <u.h>\n#include <libc.h>\n");
       -        else
       -                print("#include \"lib9.h\"\n");
       -        print("#include <draw.h>\n");
       -        print("#include <memdraw.h>\n\n");
       -        print("static Memcmap def = {\n");
       -        print("/* cmap2rgb */ {\n");
       -        for(i=0; i<sizeof(c->cmap2rgb); ){
       -                print("\t");
       -                for(j=0; j<16; j++, i++)
       -                        print("0x%2.2ux,", c->cmap2rgb[i]);
       -                print("\n");
       -        }
       -        print("},\n");
       -        print("/* rgb2cmap */ {\n");
       -        for(i=0; i<sizeof(c->rgb2cmap);){
       -                print("\t");
       -                for(j=0; j<16; j++, i++)
       -                        print("0x%2.2ux,", c->rgb2cmap[i]);
       -                print("\n");
       -        }
       -        print("}\n");
       -        print("};\n");
       -        print("Memcmap *memdefcmap = &def;\n");
       -        print("void _memmkcmap(void){}\n");
       -        exits(0);
       -}
 (DIR) diff --git a/src/libdraw/md-openmemsubfont.c b/src/libdraw/md-openmemsubfont.c
       t@@ -1,53 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -
       -Memsubfont*
       -openmemsubfont(char *name)
       -{
       -        Memsubfont *sf;
       -        Memimage *i;
       -        Fontchar *fc;
       -        int fd, n;
       -        char hdr[3*12+4+1];
       -        uchar *p;
       -
       -        fd = open(name, OREAD);
       -        if(fd < 0)
       -                return nil;
       -        p = nil;
       -        i = readmemimage(fd);
       -        if(i == nil)
       -                goto Err;
       -        if(read(fd, hdr, 3*12) != 3*12){
       -                werrstr("openmemsubfont: header read error: %r");
       -                goto Err;
       -        }
       -        n = atoi(hdr);
       -        p = malloc(6*(n+1));
       -        if(p == nil)
       -                goto Err;
       -        if(read(fd, p, 6*(n+1)) != 6*(n+1)){
       -                werrstr("openmemsubfont: fontchar read error: %r");
       -                goto Err;
       -        }
       -        fc = malloc(sizeof(Fontchar)*(n+1));
       -        if(fc == nil)
       -                goto Err;
       -        _unpackinfo(fc, p, n);
       -        sf = allocmemsubfont(name, n, atoi(hdr+12), atoi(hdr+24), fc, i);
       -        if(sf == nil){
       -                free(fc);
       -                goto Err;
       -        }
       -        free(p);
       -        return sf;
       -Err:
       -        close(fd);
       -        if (i != nil)
       -                freememimage(i);
       -        if (p != nil)
       -                free(p);
       -        return nil;
       -}
 (DIR) diff --git a/src/libdraw/md-poly.c b/src/libdraw/md-poly.c
       t@@ -1,23 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -
       -void
       -mempoly(Memimage *dst, Point *vert, int nvert, int end0, int end1, int radius, Memimage *src, Point sp, int op)
       -{
       -        int i, e0, e1;
       -        Point d;
       -
       -        if(nvert < 2)
       -                return;
       -        d = subpt(sp, vert[0]);
       -        for(i=1; i<nvert; i++){
       -                e0 = e1 = Enddisc;
       -                if(i == 1)
       -                        e0 = end0;
       -                if(i == nvert-1)
       -                        e1 = end1;
       -                memline(dst, vert[i-1], vert[i], e0, e1, radius, src, addpt(d, vert[i-1]), op);
       -        }
       -}
 (DIR) diff --git a/src/libdraw/md-read.c b/src/libdraw/md-read.c
       t@@ -1,111 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -
       -Memimage*
       -readmemimage(int fd)
       -{
       -        char hdr[5*12+1];
       -        int dy;
       -        u32int chan;
       -        uint l, n;
       -        int m, j;
       -        int new, miny, maxy;
       -        Rectangle r;
       -        uchar *tmp;
       -        int ldepth, chunk;
       -        Memimage *i;
       -
       -        if(readn(fd, hdr, 11) != 11){
       -                werrstr("readimage: short header");
       -                return nil;
       -        }
       -        if(memcmp(hdr, "compressed\n", 11) == 0)
       -                return creadmemimage(fd);
       -        if(readn(fd, hdr+11, 5*12-11) != 5*12-11){
       -                werrstr("readimage: short header (2)");
       -                return nil;
       -        }
       -
       -        /*
       -         * distinguish new channel descriptor from old ldepth.
       -         * channel descriptors have letters as well as numbers,
       -         * while ldepths are a single digit formatted as %-11d.
       -         */
       -        new = 0;
       -        for(m=0; m<10; m++){
       -                if(hdr[m] != ' '){
       -                        new = 1;
       -                        break;
       -                }
       -        }
       -        if(hdr[11] != ' '){
       -                werrstr("readimage: bad format");
       -                return nil;
       -        }
       -        if(new){
       -                hdr[11] = '\0';
       -                if((chan = strtochan(hdr)) == 0){
       -                        werrstr("readimage: bad channel string %s", hdr);
       -                        return nil;
       -                }
       -        }else{
       -                ldepth = ((int)hdr[10])-'0';
       -                if(ldepth<0 || ldepth>3){
       -                        werrstr("readimage: bad ldepth %d", ldepth);
       -                        return nil;
       -                }
       -                chan = drawld2chan[ldepth];
       -        }
       -
       -        r.min.x = atoi(hdr+1*12);
       -        r.min.y = atoi(hdr+2*12);
       -        r.max.x = atoi(hdr+3*12);
       -        r.max.y = atoi(hdr+4*12);
       -        if(r.min.x>r.max.x || r.min.y>r.max.y){
       -                werrstr("readimage: bad rectangle");
       -                return nil;
       -        }
       -
       -        miny = r.min.y;
       -        maxy = r.max.y;
       -
       -        l = bytesperline(r, chantodepth(chan));
       -        i = allocmemimage(r, chan);
       -        if(i == nil)
       -                return nil;
       -        chunk = 32*1024;
       -        if(chunk < l)
       -                chunk = l;
       -        tmp = malloc(chunk);
       -        if(tmp == nil)
       -                goto Err;
       -        while(maxy > miny){
       -                dy = maxy - miny;
       -                if(dy*l > chunk)
       -                        dy = chunk/l;
       -                if(dy <= 0){
       -                        werrstr("readmemimage: image too wide for buffer");
       -                        goto Err;
       -                }
       -                n = dy*l;
       -                m = readn(fd, tmp, n);
       -                if(m != n){
       -                        werrstr("readmemimage: read count %d not %d: %r", m, n);
       -   Err:
       -                         freememimage(i);
       -                        free(tmp);
       -                        return nil;
       -                }
       -                if(!new)        /* an old image: must flip all the bits */
       -                        for(j=0; j<chunk; j++)
       -                                tmp[j] ^= 0xFF;
       -
       -                if(loadmemimage(i, Rect(r.min.x, miny, r.max.x, miny+dy), tmp, chunk) <= 0)
       -                        goto Err;
       -                miny += dy;
       -        }
       -        free(tmp);
       -        return i;
       -}
 (DIR) diff --git a/src/libdraw/md-string.c b/src/libdraw/md-string.c
       t@@ -1,66 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -
       -Point
       -memimagestring(Memimage *b, Point p, Memimage *color, Point cp, Memsubfont *f, char *cs)
       -{
       -        int w, width;
       -        uchar *s;
       -        Rune c;
       -        Fontchar *i;
       -
       -        s = (uchar*)cs;
       -        for(; c=*s; p.x+=width, cp.x+=width){
       -                width = 0;
       -                if(c < Runeself)
       -                        s++;
       -                else{
       -                        w = chartorune(&c, (char*)s);
       -                        if(w == 0){
       -                                s++;
       -                                continue;
       -                        }
       -                        s += w;
       -                }
       -                if(c >= f->n)
       -                        continue;
       -                i = f->info+c;
       -                width = i->width;
       -                memdraw(b, Rect(p.x+i->left, p.y+i->top, p.x+i->left+(i[1].x-i[0].x), p.y+i->bottom),
       -                        color, cp, f->bits, Pt(i->x, i->top), SoverD);
       -        }
       -        return p;
       -}
       -
       -Point
       -memsubfontwidth(Memsubfont *f, char *cs)
       -{
       -        Rune c;
       -        Point p;
       -        uchar *s;
       -        Fontchar *i;
       -        int w, width;
       -
       -        p = Pt(0, f->height);
       -        s = (uchar*)cs;
       -        for(; c=*s; p.x+=width){
       -                width = 0;
       -                if(c < Runeself)
       -                        s++;
       -                else{
       -                        w = chartorune(&c, (char*)s);
       -                        if(w == 0){
       -                                s++;
       -                                continue;
       -                        }
       -                        s += w;
       -                }
       -                if(c >= f->n)
       -                        continue;
       -                i = f->info+c;
       -                width = i->width;
       -        }
       -        return p;
       -}
 (DIR) diff --git a/src/libdraw/md-subfont.c b/src/libdraw/md-subfont.c
       t@@ -1,34 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -
       -Memsubfont*
       -allocmemsubfont(char *name, int n, int height, int ascent, Fontchar *info, Memimage *i)
       -{
       -        Memsubfont *f;
       -
       -        f = malloc(sizeof(Memsubfont));
       -        if(f == 0)
       -                return 0;
       -        f->n = n;
       -        f->height = height;
       -        f->ascent = ascent;
       -        f->info = info;
       -        f->bits = i;
       -        if(name)
       -                f->name = strdup(name);
       -        else
       -                f->name = 0;
       -        return f;
       -}
       -
       -void
       -freememsubfont(Memsubfont *f)
       -{
       -        if(f == 0)
       -                return;
       -        free(f->info);        /* note: f->info must have been malloc'ed! */
       -        freememimage(f->bits);
       -        free(f);
       -}
 (DIR) diff --git a/src/libdraw/md-unload.c b/src/libdraw/md-unload.c
       t@@ -1,25 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -
       -int
       -_unloadmemimage(Memimage *i, Rectangle r, uchar *data, int ndata)
       -{
       -        int y, l;
       -        uchar *q;
       -
       -        if(!rectinrect(r, i->r))
       -                return -1;
       -        l = bytesperline(r, i->depth);
       -        if(ndata < l*Dy(r))
       -                return -1;
       -        ndata = l*Dy(r);
       -        q = byteaddr(i, r.min);
       -        for(y=r.min.y; y<r.max.y; y++){
       -                memmove(data, q, l);
       -                q += i->width*sizeof(u32int);
       -                data += l;
       -        }
       -        return ndata;
       -}
 (DIR) diff --git a/src/libdraw/md-write.c b/src/libdraw/md-write.c
       t@@ -1,183 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -
       -#define        CHUNK        8000
       -
       -#define        HSHIFT        3        /* HSHIFT==5 runs slightly faster, but hash table is 64x bigger */
       -#define        NHASH        (1<<(HSHIFT*NMATCH))
       -#define        HMASK        (NHASH-1)
       -#define        hupdate(h, c)        ((((h)<<HSHIFT)^(c))&HMASK)
       -typedef struct Hlist Hlist;
       -struct Hlist{
       -        uchar *s;
       -        Hlist *next, *prev;
       -};
       -
       -int
       -writememimage(int fd, Memimage *i)
       -{
       -        uchar *outbuf, *outp, *eout;                /* encoded data, pointer, end */
       -        uchar *loutp;                                /* start of encoded line */
       -        Hlist *hash;                                /* heads of hash chains of past strings */
       -        Hlist *chain, *hp;                        /* hash chain members, pointer */
       -        Hlist *cp;                                /* next Hlist to fall out of window */
       -        int h;                                        /* hash value */
       -        uchar *line, *eline;                        /* input line, end pointer */
       -        uchar *data, *edata;                        /* input buffer, end pointer */
       -        u32int n;                                /* length of input buffer */
       -        u32int nb;                                /* # of bytes returned by unloadimage */
       -        int bpl;                                /* input line length */
       -        int offs, runlen;                        /* offset, length of consumed data */
       -        uchar dumpbuf[NDUMP];                        /* dump accumulator */
       -        int ndump;                                /* length of dump accumulator */
       -        int miny, dy;                                /* y values while unloading input */
       -        int ncblock;                                /* size of compressed blocks */
       -        Rectangle r;
       -        uchar *p, *q, *s, *es, *t;
       -        char hdr[11+5*12+1];
       -        char cbuf[20];
       -
       -        r = i->r;
       -        bpl = bytesperline(r, i->depth);
       -        n = Dy(r)*bpl;
       -        data = malloc(n);
       -        ncblock = _compblocksize(r, i->depth);
       -        outbuf = malloc(ncblock);
       -        hash = malloc(NHASH*sizeof(Hlist));
       -        chain = malloc(NMEM*sizeof(Hlist));
       -        if(data == 0 || outbuf == 0 || hash == 0 || chain == 0){
       -        ErrOut:
       -                free(data);
       -                free(outbuf);
       -                free(hash);
       -                free(chain);
       -                return -1;
       -        }
       -        for(miny = r.min.y; miny != r.max.y; miny += dy){
       -                dy = r.max.y-miny;
       -                if(dy*bpl > CHUNK)
       -                        dy = CHUNK/bpl;
       -                nb = unloadmemimage(i, Rect(r.min.x, miny, r.max.x, miny+dy),
       -                        data+(miny-r.min.y)*bpl, dy*bpl);
       -                if(nb != dy*bpl)
       -                        goto ErrOut;
       -        }
       -        sprint(hdr, "compressed\n%11s %11d %11d %11d %11d ",
       -                chantostr(cbuf, i->chan), r.min.x, r.min.y, r.max.x, r.max.y);
       -        if(write(fd, hdr, 11+5*12) != 11+5*12)
       -                goto ErrOut;
       -        edata = data+n;
       -        eout = outbuf+ncblock;
       -        line = data;
       -        r.max.y = r.min.y;
       -        while(line != edata){
       -                memset(hash, 0, NHASH*sizeof(Hlist));
       -                memset(chain, 0, NMEM*sizeof(Hlist));
       -                cp = chain;
       -                h = 0;
       -                outp = outbuf;
       -                for(n = 0; n != NMATCH; n++)
       -                        h = hupdate(h, line[n]);
       -                loutp = outbuf;
       -                while(line != edata){
       -                        ndump = 0;
       -                        eline = line+bpl;
       -                        for(p = line; p != eline; ){
       -                                if(eline-p < NRUN)
       -                                        es = eline;
       -                                else
       -                                        es = p+NRUN;
       -                                q = 0;
       -                                runlen = 0;
       -                                for(hp = hash[h].next; hp; hp = hp->next){
       -                                        s = p + runlen;
       -                                        if(s >= es)
       -                                                continue;
       -                                        t = hp->s + runlen;
       -                                        for(; s >= p; s--)
       -                                                if(*s != *t--)
       -                                                        goto matchloop;
       -                                        t += runlen+2;
       -                                        s += runlen+2;
       -                                        for(; s < es; s++)
       -                                                if(*s != *t++)
       -                                                        break;
       -                                        n = s-p;
       -                                        if(n > runlen){
       -                                                runlen = n;
       -                                                q = hp->s;
       -                                                if(n == NRUN)
       -                                                        break;
       -                                        }
       -                        matchloop: ;
       -                                }
       -                                if(runlen < NMATCH){
       -                                        if(ndump == NDUMP){
       -                                                if(eout-outp < ndump+1)
       -                                                        goto Bfull;
       -                                                *outp++ = ndump-1+128;
       -                                                memmove(outp, dumpbuf, ndump);
       -                                                outp += ndump;
       -                                                ndump = 0;
       -                                        }
       -                                        dumpbuf[ndump++] = *p;
       -                                        runlen = 1;
       -                                }
       -                                else{
       -                                        if(ndump != 0){
       -                                                if(eout-outp < ndump+1)
       -                                                        goto Bfull;
       -                                                *outp++ = ndump-1+128;
       -                                                memmove(outp, dumpbuf, ndump);
       -                                                outp += ndump;
       -                                                ndump = 0;
       -                                        }
       -                                        offs = p-q-1;
       -                                        if(eout-outp < 2)
       -                                                goto Bfull;
       -                                        *outp++ = ((runlen-NMATCH)<<2) + (offs>>8);
       -                                        *outp++ = offs&255;
       -                                }
       -                                for(q = p+runlen; p != q; p++){
       -                                        if(cp->prev)
       -                                                cp->prev->next = 0;
       -                                        cp->next = hash[h].next;
       -                                        cp->prev = &hash[h];
       -                                        if(cp->next)
       -                                                cp->next->prev = cp;
       -                                        cp->prev->next = cp;
       -                                        cp->s = p;
       -                                        if(++cp == &chain[NMEM])
       -                                                cp = chain;
       -                                        if(edata-p > NMATCH)
       -                                                h = hupdate(h, p[NMATCH]);
       -                                }
       -                        }
       -                        if(ndump != 0){
       -                                if(eout-outp < ndump+1)
       -                                        goto Bfull;
       -                                *outp++ = ndump-1+128;
       -                                memmove(outp, dumpbuf, ndump);
       -                                outp += ndump;
       -                        }
       -                        line = eline;
       -                        loutp = outp;
       -                        r.max.y++;
       -                }
       -        Bfull:
       -                if(loutp == outbuf)
       -                        goto ErrOut;
       -                n = loutp-outbuf;
       -                sprint(hdr, "%11d %11ld ", r.max.y, n);
       -                write(fd, hdr, 2*12);
       -                write(fd, outbuf, n);
       -                r.min.y = r.max.y;
       -        }
       -        free(data);
       -        free(outbuf);
       -        free(hash);
       -        free(chain);
       -        return 0;
       -}
 (DIR) diff --git a/src/libdraw/mkfile b/src/libdraw/mkfile
       t@@ -17,6 +17,8 @@ OFILES=\
                debug.$O\
                defont.$O\
                draw.$O\
       +        drawclient.$O\
       +        drawfcall.$O\
                drawrepl.$O\
                egetrect.$O\
                ellipse.$O\
       t@@ -29,11 +31,12 @@ OFILES=\
                icossin.$O\
                icossin2.$O\
                init.$O\
       +        keyboard.$O\
                line.$O\
       -        latin1.$O\
                loadimage.$O\
                menuhit.$O\
                mkfont.$O\
       +        mouse.$O\
                openfont.$O\
                poly.$O\
                readimage.$O\
       t@@ -42,6 +45,7 @@ OFILES=\
                replclipr.$O\
                rgb.$O\
                scroll.$O\
       +        snarf.$O\
                string.$O\
                stringbg.$O\
                stringsubfont.$O\
       t@@ -53,79 +57,17 @@ OFILES=\
                window.$O\
                writeimage.$O\
                writesubfont.$O\
       -        md-alloc.$O\
       -        md-arc.$O\
       -        md-cload.$O\
       -        md-cmap.$O\
       -        md-cread.$O\
       -        md-defont.$O\
       -        md-draw.$O\
       -        md-ellipse.$O\
       -        md-fillpoly.$O\
       -        md-hwdraw.$O\
       -        md-iprint.$O\
       -        md-line.$O\
       -        md-load.$O\
       -        md-openmemsubfont.$O\
       -        md-poly.$O\
       -        md-read.$O\
       -        md-string.$O\
       -        md-subfont.$O\
       -        md-unload.$O\
       -        md-write.$O\
       -        ml-draw.$O\
       -        ml-lalloc.$O\
       -        ml-layerop.$O\
       -        ml-ldelete.$O\
       -        ml-lhide.$O\
       -        ml-line.$O\
       -        ml-load.$O\
       -        ml-lorigin.$O\
       -        ml-lsetrefresh.$O\
       -        ml-ltofront.$O\
       -        ml-ltorear.$O\
       -        ml-unload.$O\
       -        devdraw.$O\
       +        wsys.$O\
                unix.$O\
        
        HFILES=\
                $PLAN9/include/draw.h\
       -        $PLAN9/include/memdraw.h\
       -        $PLAN9/include/memlayer.h\
       +        $PLAN9/include/drawfcall.h\
       +        $PLAN9/include/mux.h\
                $PLAN9/include/event.h\
                $PLAN9/include/cursor.h\
                $PLAN9/include/mouse.h\
                $PLAN9/include/keyboard.h\
        
       -# some of these should move to wsysofiles
       -
       -XHFILES=\
       -        x11-inc.h\
       -        x11-memdraw.h\
       -
       -<|sh ./mkwsysrules.sh
       -
       -WSYSOFILES=\
       -        $WSYSTYPE-alloc.$O\
       -        $WSYSTYPE-cload.$O\
       -        $WSYSTYPE-draw.$O\
       -        $WSYSTYPE-event.$O\
       -        $WSYSTYPE-fill.$O\
       -        $WSYSTYPE-get.$O\
       -        $WSYSTYPE-init.$O\
       -        $WSYSTYPE-itrans.$O\
       -        $WSYSTYPE-keyboard.$O\
       -        $WSYSTYPE-keysym2ucs.$O\
       -        $WSYSTYPE-load.$O\
       -        $WSYSTYPE-mouse.$O\
       -        $WSYSTYPE-pixelbits.$O\
       -        $WSYSTYPE-unload.$O\
       -        $WSYSTYPE-wsys.$O\
       -
       -OFILES=$OFILES $WSYSOFILES
       -
        <$PLAN9/src/mksyslib
        
       -test: test.o $PLAN9/lib/$LIB
       -        gcc -o test test.o -L$PLAN9/lib -ldraw -l9 -lfmt -lutf -L$X11/lib -lX11 -lm
       -
 (DIR) diff --git a/src/libdraw/ml-draw.c b/src/libdraw/ml-draw.c
       t@@ -1,192 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -#include <memlayer.h>
       -
       -struct Draw
       -{
       -        Point        deltas;
       -        Point        deltam;
       -        Memlayer                *dstlayer;
       -        Memimage        *src;
       -        Memimage        *mask;
       -        int        op;
       -};
       -
       -static
       -void
       -ldrawop(Memimage *dst, Rectangle screenr, Rectangle clipr, void *etc, int insave)
       -{
       -        struct Draw *d;
       -        Point p0, p1;
       -        Rectangle oclipr, srcr, r, mr;
       -        int ok;
       -
       -        d = etc;
       -        if(insave && d->dstlayer->save==nil)
       -                return;
       -
       -        p0 = addpt(screenr.min, d->deltas);
       -        p1 = addpt(screenr.min, d->deltam);
       -
       -        if(insave){
       -                r = rectsubpt(screenr, d->dstlayer->delta);
       -                clipr = rectsubpt(clipr, d->dstlayer->delta);
       -        }else
       -                r = screenr;
       -
       -        /* now in logical coordinates */
       -
       -        /* clipr may have narrowed what we should draw on, so clip if necessary */
       -        if(!rectinrect(r, clipr)){
       -                oclipr = dst->clipr;
       -                dst->clipr = clipr;
       -                ok = drawclip(dst, &r, d->src, &p0, d->mask, &p1, &srcr, &mr);
       -                dst->clipr = oclipr;
       -                if(!ok)
       -                        return;
       -        }
       -        memdraw(dst, r, d->src, p0, d->mask, p1, d->op);
       -}
       -
       -void
       -memdraw(Memimage *dst, Rectangle r, Memimage *src, Point p0, Memimage *mask, Point p1, int op)
       -{
       -        struct Draw d;
       -        Rectangle srcr, tr, mr;
       -        Memlayer *dl, *sl;
       -
       -        if(drawdebug)
       -                iprint("memdraw %p %R %p %P %p %P\n", dst, r, src, p0, mask, p1);
       -
       -        if(mask == nil)
       -                mask = memopaque;
       -
       -        if(mask->layer){
       -if(drawdebug)        iprint("mask->layer != nil\n");
       -                return;        /* too hard, at least for now */
       -        }
       -
       -    Top:
       -        if(dst->layer==nil && src->layer==nil){
       -                memimagedraw(dst, r, src, p0, mask, p1, op);
       -                return;
       -        }
       -
       -        if(drawclip(dst, &r, src, &p0, mask, &p1, &srcr, &mr) == 0){
       -if(drawdebug)        iprint("drawclip dstcr %R srccr %R maskcr %R\n", dst->clipr, src->clipr, mask->clipr);
       -                return;
       -        }
       -
       -        /*
       -          * Convert to screen coordinates.
       -         */
       -        dl = dst->layer;
       -        if(dl != nil){
       -                r.min.x += dl->delta.x;
       -                r.min.y += dl->delta.y;
       -                r.max.x += dl->delta.x;
       -                r.max.y += dl->delta.y;
       -        }
       -    Clearlayer:
       -        if(dl!=nil && dl->clear){
       -                if(src == dst){
       -                        p0.x += dl->delta.x;
       -                        p0.y += dl->delta.y;
       -                        src = dl->screen->image;
       -                }
       -                dst = dl->screen->image;
       -                goto Top;
       -        }
       -
       -        sl = src->layer;
       -        if(sl != nil){
       -                p0.x += sl->delta.x;
       -                p0.y += sl->delta.y;
       -                srcr.min.x += sl->delta.x;
       -                srcr.min.y += sl->delta.y;
       -                srcr.max.x += sl->delta.x;
       -                srcr.max.y += sl->delta.y;
       -        }
       -
       -        /*
       -         * Now everything is in screen coordinates.
       -         * mask is an image.  dst and src are images or obscured layers.
       -         */
       -
       -        /*
       -         * if dst and src are the same layer, just draw in save area and expose.
       -         */
       -        if(dl!=nil && dst==src){
       -                if(dl->save == nil)
       -                        return;        /* refresh function makes this case unworkable */
       -                if(rectXrect(r, srcr)){
       -                        tr = r;
       -                        if(srcr.min.x < tr.min.x){
       -                                p1.x += tr.min.x - srcr.min.x;
       -                                tr.min.x = srcr.min.x;
       -                        }
       -                        if(srcr.min.y < tr.min.y){
       -                                p1.y += tr.min.x - srcr.min.x;
       -                                tr.min.y = srcr.min.y;
       -                        }
       -                        if(srcr.max.x > tr.max.x)
       -                                tr.max.x = srcr.max.x;
       -                        if(srcr.max.y > tr.max.y)
       -                                tr.max.y = srcr.max.y;
       -                        memlhide(dst, tr);
       -                }else{
       -                        memlhide(dst, r);
       -                        memlhide(dst, srcr);
       -                }
       -                memdraw(dl->save, rectsubpt(r, dl->delta), dl->save,
       -                        subpt(srcr.min, src->layer->delta), mask, p1, op);
       -                memlexpose(dst, r);
       -                return;
       -        }
       -
       -        if(sl){
       -                if(sl->clear){
       -                        src = sl->screen->image;
       -                        if(dl != nil){
       -                                r.min.x -= dl->delta.x;
       -                                r.min.y -= dl->delta.y;
       -                                r.max.x -= dl->delta.x;
       -                                r.max.y -= dl->delta.y;
       -                        }
       -                        goto Top;
       -                }
       -                /* relatively rare case; use save area */
       -                if(sl->save == nil)
       -                        return;        /* refresh function makes this case unworkable */
       -                memlhide(src, srcr);
       -                /* convert back to logical coordinates */
       -                p0.x -= sl->delta.x;
       -                p0.y -= sl->delta.y;
       -                srcr.min.x -= sl->delta.x;
       -                srcr.min.y -= sl->delta.y;
       -                srcr.max.x -= sl->delta.x;
       -                srcr.max.y -= sl->delta.y;
       -                src = src->layer->save;
       -        }
       -
       -        /*
       -         * src is now an image.  dst may be an image or a clear layer
       -         */
       -        if(dst->layer==nil)
       -                goto Top;
       -        if(dst->layer->clear)
       -                goto Clearlayer;
       -
       -        /*
       -         * dst is an obscured layer
       -         */
       -        d.deltas = subpt(p0, r.min);
       -        d.deltam = subpt(p1, r.min);
       -        d.dstlayer = dl;
       -        d.src = src;
       -        d.op = op;
       -        d.mask = mask;
       -        _memlayerop(ldrawop, dst, r, r, &d);
       -}
 (DIR) diff --git a/src/libdraw/ml-lalloc.c b/src/libdraw/ml-lalloc.c
       t@@ -1,79 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -#include <memlayer.h>
       -
       -Memimage*
       -memlalloc(Memscreen *s, Rectangle screenr, Refreshfn refreshfn, void *refreshptr, u32int val)
       -{
       -        Memlayer *l;
       -        Memimage *n;
       -        static Memimage *paint;
       -
       -        if(paint == nil){
       -                paint = allocmemimage(Rect(0,0,1,1), RGBA32);
       -                if(paint == nil)
       -                        return nil;
       -                paint->flags |= Frepl;
       -                paint->clipr = Rect(-0x3FFFFFF, -0x3FFFFFF, 0x3FFFFFF, 0x3FFFFFF);
       -        }
       -
       -        n = allocmemimaged(screenr, s->image->chan, s->image->data, nil);
       -        if(n == nil)
       -                return nil;
       -        l = malloc(sizeof(Memlayer));
       -        if(l == nil){
       -                free(n);
       -                return nil;
       -        }
       -
       -        l->screen = s;
       -        if(refreshfn)
       -                l->save = nil;
       -        else{
       -                l->save = allocmemimage(screenr, s->image->chan);
       -                if(l->save == nil){
       -                        free(l);
       -                        free(n);
       -                        return nil;
       -                }
       -                /* allocmemimage doesn't initialize memory; this paints save area */
       -                if(val != DNofill)
       -                        memfillcolor(l->save, val);
       -        }
       -        l->refreshfn = refreshfn;
       -        l->refreshptr = nil;        /* don't set it until we're done */
       -        l->screenr = screenr;
       -        l->delta = Pt(0,0);
       -
       -        n->data->ref++;
       -        n->zero = s->image->zero;
       -        n->width = s->image->width;
       -        n->layer = l;
       -
       -        /* start with new window behind all existing ones */
       -        l->front = s->rearmost;
       -        l->rear = nil;
       -        if(s->rearmost)
       -                s->rearmost->layer->rear = n;
       -        s->rearmost = n;
       -        if(s->frontmost == nil)
       -                s->frontmost = n;
       -        l->clear = 0;
       -
       -        /* now pull new window to front */
       -        _memltofrontfill(n, val != DNofill);
       -        l->refreshptr = refreshptr;
       -
       -        /*
       -         * paint with requested color; previously exposed areas are already right
       -         * if this window has backing store, but just painting the whole thing is simplest.
       -         */
       -        if(val != DNofill){
       -                memsetchan(paint, n->chan);
       -                memfillcolor(paint, val);
       -                memdraw(n, n->r, paint, n->r.min, nil, n->r.min, S);
       -        }
       -        return n;
       -}
 (DIR) diff --git a/src/libdraw/ml-layerop.c b/src/libdraw/ml-layerop.c
       t@@ -1,112 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -#include <memlayer.h>
       -
       -#define        RECUR(a,b,c,d)        _layerop(fn, i, Rect(a.x, b.y, c.x, d.y), clipr, etc, front->layer->rear);
       -
       -static void
       -_layerop(
       -        void (*fn)(Memimage*, Rectangle, Rectangle, void*, int),
       -        Memimage *i,
       -        Rectangle r,
       -        Rectangle clipr,
       -        void *etc,
       -        Memimage *front)
       -{
       -        Rectangle fr;
       -
       -    Top:
       -        if(front == i){
       -                /* no one is in front of this part of window; use the screen */
       -                fn(i->layer->screen->image, r, clipr, etc, 0);
       -                return;
       -        }
       -        fr = front->layer->screenr;
       -        if(rectXrect(r, fr) == 0){
       -                /* r doesn't touch this window; continue on next rearmost */
       -                /* assert(front && front->layer && front->layer->screen && front->layer->rear); */
       -                front = front->layer->rear;
       -                goto Top;
       -        }
       -        if(fr.max.y < r.max.y){
       -                RECUR(r.min, fr.max, r.max, r.max);
       -                r.max.y = fr.max.y;
       -        }
       -        if(r.min.y < fr.min.y){
       -                RECUR(r.min, r.min, r.max, fr.min);
       -                r.min.y = fr.min.y;
       -        }
       -        if(fr.max.x < r.max.x){
       -                RECUR(fr.max, r.min, r.max, r.max);
       -                r.max.x = fr.max.x;
       -        }
       -        if(r.min.x < fr.min.x){
       -                RECUR(r.min, r.min, fr.min, r.max);
       -                r.min.x = fr.min.x;
       -        }
       -        /* r is covered by front, so put in save area */
       -        (*fn)(i->layer->save, r, clipr, etc, 1);
       -}
       -
       -/*
       - * Assumes incoming rectangle has already been clipped to i's logical r and clipr
       - */
       -void
       -_memlayerop(
       -        void (*fn)(Memimage*, Rectangle, Rectangle, void*, int),
       -        Memimage *i,
       -        Rectangle screenr,        /* clipped to window boundaries */
       -        Rectangle clipr,                /* clipped also to clipping rectangles of hierarchy */
       -        void *etc)
       -{
       -        Memlayer *l;
       -        Rectangle r, scr;
       -
       -        l = i->layer;
       -        if(!rectclip(&screenr, l->screenr))
       -                return;
       -        if(l->clear){
       -                fn(l->screen->image, screenr, clipr, etc, 0);
       -                return;
       -        }
       -        r = screenr;
       -        scr = l->screen->image->clipr;
       -
       -        /*
       -         * Do the piece on the screen
       -         */
       -        if(rectclip(&screenr, scr))
       -                _layerop(fn, i, screenr, clipr, etc, l->screen->frontmost);
       -        if(rectinrect(r, scr))
       -                return;
       -
       -        /*
       -         * Do the piece off the screen
       -        */
       -        if(!rectXrect(r, scr)){
       -                /* completely offscreen; easy */
       -                fn(l->save, r, clipr, etc, 1);
       -                return;
       -        }
       -        if(r.min.y < scr.min.y){
       -                /* above screen */
       -                fn(l->save, Rect(r.min.x, r.min.y, r.max.x, scr.min.y), clipr, etc, 1);
       -                r.min.y = scr.min.y;
       -        }
       -        if(r.max.y > scr.max.y){
       -                /* below screen */
       -                fn(l->save, Rect(r.min.x, scr.max.y, r.max.x, r.max.y), clipr, etc, 1);
       -                r.max.y = scr.max.y;
       -        }
       -        if(r.min.x < scr.min.x){
       -                /* left of screen */
       -                fn(l->save, Rect(r.min.x, r.min.y, scr.min.x, r.max.y), clipr, etc, 1);
       -                r.min.x = scr.min.x;
       -        }
       -        if(r.max.x > scr.max.x){
       -                /* right of screen */
       -                fn(l->save, Rect(scr.max.x, r.min.y, r.max.x, r.max.y), clipr, etc, 1);
       -        }
       -}
 (DIR) diff --git a/src/libdraw/ml-ldelete.c b/src/libdraw/ml-ldelete.c
       t@@ -1,67 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -#include <memlayer.h>
       -
       -void
       -memldelete(Memimage *i)
       -{
       -        Memscreen *s;
       -        Memlayer *l;
       -
       -        l = i->layer;
       -        /* free backing store and disconnect refresh, to make pushback fast */
       -        freememimage(l->save);
       -        l->save = nil;
       -        l->refreshptr = nil;
       -        memltorear(i);
       -
       -        /* window is now the rearmost;  clean up screen structures and deallocate */
       -        s = i->layer->screen;
       -        if(s->fill){
       -                i->clipr = i->r;
       -                memdraw(i, i->r, s->fill, i->r.min, nil, i->r.min, S);
       -        }
       -        if(l->front){
       -                l->front->layer->rear = nil;
       -                s->rearmost = l->front;
       -        }else{
       -                s->frontmost = nil;
       -                s->rearmost = nil;
       -        }
       -        free(l);
       -        freememimage(i);
       -}
       -
       -/*
       - * Just free the data structures, don't do graphics
       - */
       -void
       -memlfree(Memimage *i)
       -{
       -        Memlayer *l;
       -
       -        l = i->layer;
       -        freememimage(l->save);
       -        free(l);
       -        freememimage(i);
       -}
       -
       -void
       -_memlsetclear(Memscreen *s)
       -{
       -        Memimage *i, *j;
       -        Memlayer *l;
       -
       -        for(i=s->rearmost; i; i=i->layer->front){
       -                l = i->layer;
       -                l->clear = rectinrect(l->screenr, l->screen->image->clipr);
       -                if(l->clear)
       -                        for(j=l->front; j; j=j->layer->front)
       -                                if(rectXrect(l->screenr, j->layer->screenr)){
       -                                        l->clear = 0;
       -                                        break;
       -                                }
       -        }
       -}
 (DIR) diff --git a/src/libdraw/ml-lhide.c b/src/libdraw/ml-lhide.c
       t@@ -1,67 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -#include <memlayer.h>
       -
       -/*
       - * Hide puts that portion of screenr now on the screen into the window's save area.
       - * Expose puts that portion of screenr now in the save area onto the screen.
       - *
       - * Hide and Expose both require that the layer structures in the screen
       - * match the geometry they are being asked to update, that is, they update the
       - * save area (hide) or screen (expose) based on what those structures tell them.
       - * This means they must be called at the correct time during window shuffles.
       - */
       -
       -static
       -void
       -lhideop(Memimage *src, Rectangle screenr, Rectangle clipr, void *etc, int insave)
       -{
       -        Rectangle r;
       -        Memlayer *l;
       -
       -        USED(clipr.min.x);
       -        USED(insave);
       -        l = etc;
       -        if(src != l->save){        /* do nothing if src is already in save area */
       -                r = rectsubpt(screenr, l->delta);
       -                memdraw(l->save, r, src, screenr.min, nil, screenr.min, S);
       -        }
       -}
       -
       -void
       -memlhide(Memimage *i, Rectangle screenr)
       -{
       -        if(i->layer->save == nil)
       -                return;
       -        if(rectclip(&screenr, i->layer->screen->image->r) == 0)
       -                return;
       -        _memlayerop(lhideop, i, screenr, screenr, i->layer);
       -}
       -
       -static
       -void
       -lexposeop(Memimage *dst, Rectangle screenr, Rectangle clipr, void *etc, int insave)
       -{
       -        Memlayer *l;
       -        Rectangle r;
       -
       -        USED(clipr.min.x);
       -        if(insave)        /* if dst is save area, don't bother */
       -                return;
       -        l = etc;
       -        r = rectsubpt(screenr, l->delta);
       -        if(l->save)
       -                memdraw(dst, screenr, l->save, r.min, nil, r.min, S);
       -        else
       -                l->refreshfn(dst, r, l->refreshptr);
       -}
       -
       -void
       -memlexpose(Memimage *i, Rectangle screenr)
       -{
       -        if(rectclip(&screenr, i->layer->screen->image->r) == 0)
       -                return;
       -        _memlayerop(lexposeop, i, screenr, screenr, i->layer);
       -}
 (DIR) diff --git a/src/libdraw/ml-line.c b/src/libdraw/ml-line.c
       t@@ -1,122 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -#include <memlayer.h>
       -
       -struct Lline
       -{
       -        Point                        p0;
       -        Point                        p1;
       -        Point                        delta;
       -        int                        end0;
       -        int                        end1;
       -        int                        radius;
       -        Point                        sp;
       -        Memlayer                *dstlayer;
       -        Memimage        *src;
       -        int                        op;
       -};
       -
       -static void llineop(Memimage*, Rectangle, Rectangle, void*, int);
       -
       -static
       -void
       -_memline(Memimage *dst, Point p0, Point p1, int end0, int end1, int radius, Memimage *src, Point sp, Rectangle clipr, int op)
       -{
       -        Rectangle r;
       -        struct Lline ll;
       -        Point d;
       -        int srcclipped;
       -        Memlayer *dl;
       -
       -        if(radius < 0)
       -                return;
       -        if(src->layer)        /* can't draw line with layered source */
       -                return;
       -        srcclipped = 0;
       -
       -   Top:
       -        dl = dst->layer;
       -        if(dl == nil){
       -                _memimageline(dst, p0, p1, end0, end1, radius, src, sp, clipr, op);
       -                return;
       -        }
       -        if(!srcclipped){
       -                d = subpt(sp, p0);
       -                if(rectclip(&clipr, rectsubpt(src->clipr, d)) == 0)
       -                        return;
       -                if((src->flags&Frepl)==0 && rectclip(&clipr, rectsubpt(src->r, d))==0)
       -                        return;
       -                srcclipped = 1;
       -        }
       -
       -        /* dst is known to be a layer */
       -        p0.x += dl->delta.x;
       -        p0.y += dl->delta.y;
       -        p1.x += dl->delta.x;
       -        p1.y += dl->delta.y;
       -        clipr.min.x += dl->delta.x;
       -        clipr.min.y += dl->delta.y;
       -        clipr.max.x += dl->delta.x;
       -        clipr.max.y += dl->delta.y;
       -        if(dl->clear){
       -                dst = dst->layer->screen->image;
       -                goto Top;
       -        }
       -
       -        /* XXX */
       -        /* this is not the correct set of tests */
       -/*        if(log2[dst->depth] != log2[src->depth] || log2[dst->depth]!=3) */
       -/*                return; */
       -
       -        /* can't use sutherland-cohen clipping because lines are wide */
       -        r = memlinebbox(p0, p1, end0, end1, radius);
       -        /*
       -         * r is now a bounding box for the line;
       -         * use it as a clipping rectangle for subdivision
       -         */
       -        if(rectclip(&r, clipr) == 0)
       -                return;
       -        ll.p0 = p0;
       -        ll.p1 = p1;
       -        ll.end0 = end0;
       -        ll.end1 = end1;
       -        ll.sp = sp;
       -        ll.dstlayer = dst->layer;
       -        ll.src = src;
       -        ll.radius = radius;
       -        ll.delta = dl->delta;
       -        ll.op = op;
       -        _memlayerop(llineop, dst, r, r, &ll);
       -}
       -
       -static
       -void
       -llineop(Memimage *dst, Rectangle screenr, Rectangle clipr, void *etc, int insave)
       -{
       -        struct Lline *ll;
       -        Point p0, p1;
       -
       -        USED(screenr.min.x);
       -        ll = etc;
       -        if(insave && ll->dstlayer->save==nil)
       -                return;
       -        if(!rectclip(&clipr, screenr))
       -                return;
       -        if(insave){
       -                p0 = subpt(ll->p0, ll->delta);
       -                p1 = subpt(ll->p1, ll->delta);
       -                clipr = rectsubpt(clipr, ll->delta);
       -        }else{
       -                p0 = ll->p0;
       -                p1 = ll->p1;
       -        }
       -        _memline(dst, p0, p1, ll->end0, ll->end1, ll->radius, ll->src, ll->sp, clipr, ll->op);
       -}
       -
       -void
       -memline(Memimage *dst, Point p0, Point p1, int end0, int end1, int radius, Memimage *src, Point sp, int op)
       -{
       -        _memline(dst, p0, p1, end0, end1, radius, src, sp, dst->clipr, op);
       -}
 (DIR) diff --git a/src/libdraw/ml-load.c b/src/libdraw/ml-load.c
       t@@ -1,55 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -#include <memlayer.h>
       -
       -int
       -memload(Memimage *dst, Rectangle r, uchar *data, int n, int iscompressed)
       -{
       -        int (*loadfn)(Memimage*, Rectangle, uchar*, int);
       -        Memimage *tmp;
       -        Memlayer *dl;
       -        Rectangle lr;
       -        int dx;
       -
       -        loadfn = loadmemimage;
       -        if(iscompressed)
       -                loadfn = cloadmemimage;
       -
       -    Top:
       -        dl = dst->layer;
       -        if(dl == nil)
       -                return loadfn(dst, r, data, n);
       -
       -        /*
       -          * Convert to screen coordinates.
       -         */
       -        lr = r;
       -        r.min.x += dl->delta.x;
       -        r.min.y += dl->delta.y;
       -        r.max.x += dl->delta.x;
       -        r.max.y += dl->delta.y;
       -        dx = dl->delta.x&(7/dst->depth);
       -        if(dl->clear && dx==0){
       -                dst = dl->screen->image;
       -                goto Top;
       -        }
       -
       -        /*
       -         * dst is an obscured layer or data is unaligned
       -         */
       -        if(dl->save && dx==0){
       -                n = loadfn(dl->save, lr, data, n);
       -                if(n > 0)
       -                        memlexpose(dst, r);
       -                return n;
       -        }
       -        tmp = allocmemimage(lr, dst->chan);
       -        if(tmp == nil)
       -                return -1;
       -        n = loadfn(tmp, lr, data, n);
       -        memdraw(dst, lr, tmp, lr.min, nil, lr.min, S);
       -        freememimage(tmp);
       -        return n;
       -}
 (DIR) diff --git a/src/libdraw/ml-lorigin.c b/src/libdraw/ml-lorigin.c
       t@@ -1,107 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -#include <memlayer.h>
       -
       -/*
       - * Place i so i->r.min = log, i->layer->screenr.min == scr.
       -*/
       -int
       -memlorigin(Memimage *i, Point log, Point scr)
       -{
       -        Memlayer *l;
       -        Memscreen *s;
       -        Memimage *t, *shad, *nsave;
       -        Rectangle x, newr, oldr;
       -        Point delta;
       -        int overlap, eqlog, eqscr, wasclear;
       -
       -        l = i->layer;
       -        s = l->screen;
       -        oldr = l->screenr;
       -        newr = Rect(scr.x, scr.y, scr.x+Dx(oldr), scr.y+Dy(oldr));
       -        eqscr = eqpt(scr, oldr.min);
       -        eqlog = eqpt(log, i->r.min);
       -        if(eqscr && eqlog)
       -                return 0;
       -        nsave = nil;
       -        if(eqlog==0 && l->save!=nil){
       -                nsave = allocmemimage(Rect(log.x, log.y, log.x+Dx(oldr), log.y+Dy(oldr)), i->chan);
       -                if(nsave == nil)
       -                        return -1;
       -        }
       -
       -        /*
       -         * Bring it to front and move logical coordinate system.
       -         */
       -        memltofront(i);
       -        wasclear = l->clear;
       -        if(nsave){
       -                if(!wasclear)
       -                        memimagedraw(nsave, nsave->r, l->save, l->save->r.min, nil, Pt(0,0), S);
       -                freememimage(l->save);
       -                l->save = nsave;
       -        }
       -        delta = subpt(log, i->r.min);
       -        i->r = rectaddpt(i->r, delta);
       -        i->clipr = rectaddpt(i->clipr, delta);
       -        l->delta = subpt(l->screenr.min, i->r.min);
       -        if(eqscr)
       -                return 0;
       -
       -        /*
       -         * To clean up old position, make a shadow window there, don't paint it,
       -         * push it behind this one, and (later) delete it.  Because the refresh function
       -         * for this fake window is a no-op, this will cause no graphics action except
       -         * to restore the background and expose the windows previously hidden.
       -         */
       -        shad = memlalloc(s, oldr, memlnorefresh, nil, DNofill);
       -        if(shad == nil)
       -                return -1;
       -        s->frontmost = i;
       -        if(s->rearmost == i)
       -                s->rearmost = shad;
       -        else
       -                l->rear->layer->front = shad;
       -        shad->layer->front = i;
       -        shad->layer->rear = l->rear;
       -        l->rear = shad;
       -        l->front = nil;
       -        shad->layer->clear = 0;
       -
       -        /*
       -         * Shadow is now holding down the fort at the old position.
       -         * Move the window and hide things obscured by new position.
       -         */
       -        for(t=l->rear->layer->rear; t!=nil; t=t->layer->rear){
       -                x = newr;
       -                overlap = rectclip(&x, t->layer->screenr);
       -                if(overlap){
       -                        memlhide(t, x);
       -                        t->layer->clear = 0;
       -                }
       -        }
       -        l->screenr = newr;
       -        l->delta = subpt(scr, i->r.min);
       -        l->clear = rectinrect(newr, l->screen->image->clipr);
       -
       -        /*
       -         * Everything's covered.  Copy to new position and delete shadow window.
       -         */
       -        if(wasclear)
       -                memdraw(s->image, newr, s->image, oldr.min, nil, Pt(0,0), S);
       -        else
       -                memlexpose(i, newr);
       -        memldelete(shad);
       -
       -        return 1;
       -}
       -
       -void
       -memlnorefresh(Memimage *l, Rectangle r, void *v)
       -{
       -        USED(l);
       -        USED(r.min.x);
       -        USED(v);
       -}
 (DIR) diff --git a/src/libdraw/ml-lsetrefresh.c b/src/libdraw/ml-lsetrefresh.c
       t@@ -1,35 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -#include <memlayer.h>
       -
       -int
       -memlsetrefresh(Memimage *i, Refreshfn fn, void *ptr)
       -{
       -        Memlayer *l;
       -
       -        l = i->layer;
       -        if(l->refreshfn!=0 && fn!=0){        /* just change functions */
       -                l->refreshfn = fn;
       -                l->refreshptr = ptr;
       -                return 1;
       -        }
       -
       -        if(l->refreshfn == 0){        /* is using backup image; just free it */
       -                freememimage(l->save);
       -                l->save = nil;
       -                l->refreshfn = fn;
       -                l->refreshptr = ptr;
       -                return 1;
       -        }
       -
       -        l->save = allocmemimage(i->r, i->chan);
       -        if(l->save == nil)
       -                return 0;
       -        /* easiest way is just to update the entire save area */
       -        l->refreshfn(i, i->r, l->refreshptr);
       -        l->refreshfn = 0;
       -        l->refreshptr = nil;
       -        return 1;
       -}
 (DIR) diff --git a/src/libdraw/ml-ltofront.c b/src/libdraw/ml-ltofront.c
       t@@ -1,80 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -#include <memlayer.h>
       -
       -/*
       - * Pull i towards top of screen, just behind front
       -*/
       -static
       -void
       -_memltofront(Memimage *i, Memimage *front, int fill)
       -{
       -        Memlayer *l;
       -        Memscreen *s;
       -        Memimage *f, *ff, *rr;
       -        Rectangle x;
       -        int overlap;
       -
       -        l = i->layer;
       -        s = l->screen;
       -        while(l->front != front){
       -                f = l->front;
       -                x = l->screenr;
       -                overlap = rectclip(&x, f->layer->screenr);
       -                if(overlap){
       -                        memlhide(f, x);
       -                        f->layer->clear = 0;
       -                }
       -                /* swap l and f in screen's list */
       -                ff = f->layer->front;
       -                rr = l->rear;
       -                if(ff == nil)
       -                        s->frontmost = i;
       -                else
       -                        ff->layer->rear = i;
       -                if(rr == nil)
       -                        s->rearmost = f;
       -                else
       -                        rr->layer->front = f;
       -                l->front = ff;
       -                l->rear = f;
       -                f->layer->front = i;
       -                f->layer->rear = rr;
       -                if(overlap && fill)
       -                        memlexpose(i, x);
       -        }
       -}
       -
       -void
       -_memltofrontfill(Memimage *i, int fill)
       -{
       -        _memltofront(i, nil, fill);
       -        _memlsetclear(i->layer->screen);
       -}
       -
       -void
       -memltofront(Memimage *i)
       -{
       -        _memltofront(i, nil, 1);
       -        _memlsetclear(i->layer->screen);
       -}
       -
       -void
       -memltofrontn(Memimage **ip, int n)
       -{
       -        Memimage *i, *front;
       -        Memscreen *s;
       -
       -        if(n == 0)
       -                return;
       -        front = nil;
       -        while(--n >= 0){
       -                i = *ip++;
       -                _memltofront(i, front, 1);
       -                front = i;
       -        }
       -        s = front->layer->screen;
       -        _memlsetclear(s);
       -}
 (DIR) diff --git a/src/libdraw/ml-ltorear.c b/src/libdraw/ml-ltorear.c
       t@@ -1,69 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -#include <memlayer.h>
       -
       -void
       -_memltorear(Memimage *i, Memimage *rear)
       -{
       -        Memlayer *l;
       -        Memscreen *s;
       -        Memimage *f, *r, *rr;
       -        Rectangle x;
       -        int overlap;
       -
       -        l = i->layer;
       -        s = l->screen;
       -        while(l->rear != rear){
       -                r = l->rear;
       -                x = l->screenr;
       -                overlap = rectclip(&x, r->layer->screenr);
       -                if(overlap){
       -                        memlhide(i, x);
       -                        l->clear = 0;
       -                }
       -                /* swap l and r in screen's list */
       -                rr = r->layer->rear;
       -                f = l->front;
       -                if(rr == nil)
       -                        s->rearmost = i;
       -                else
       -                        rr->layer->front = i;
       -                if(f == nil)
       -                        s->frontmost = r;
       -                else
       -                        f->layer->rear = r;
       -                l->rear = rr;
       -                l->front = r;
       -                r->layer->rear = i;
       -                r->layer->front = f;
       -                if(overlap)
       -                        memlexpose(r, x);
       -        }
       -}
       -
       -void
       -memltorear(Memimage *i)
       -{
       -        _memltorear(i, nil);
       -        _memlsetclear(i->layer->screen);
       -}
       -
       -void
       -memltorearn(Memimage **ip, int n)
       -{
       -        Memimage *i, *rear;
       -        Memscreen *s;
       -
       -        if(n == 0)
       -                return;
       -        rear = nil;
       -        while(--n >= 0){
       -                i = *ip++;
       -                _memltorear(i, rear);
       -                rear = i;
       -        }
       -        s = rear->layer->screen;
       -        _memlsetclear(s);
       -}
 (DIR) diff --git a/src/libdraw/ml-unload.c b/src/libdraw/ml-unload.c
       t@@ -1,52 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -#include <memlayer.h>
       -
       -int
       -memunload(Memimage *src, Rectangle r, uchar *data, int n)
       -{
       -        Memimage *tmp;
       -        Memlayer *dl;
       -        Rectangle lr;
       -        int dx;
       -
       -    Top:
       -        dl = src->layer;
       -        if(dl == nil)
       -                return unloadmemimage(src, r, data, n);
       -
       -        /*
       -          * Convert to screen coordinates.
       -         */
       -        lr = r;
       -        r.min.x += dl->delta.x;
       -        r.min.y += dl->delta.y;
       -        r.max.x += dl->delta.x;
       -        r.max.y += dl->delta.y;
       -        dx = dl->delta.x&(7/src->depth);
       -        if(dl->clear && dx==0){
       -                src = dl->screen->image;
       -                goto Top;
       -        }
       -
       -        /*
       -         * src is an obscured layer or data is unaligned
       -         */
       -        if(dl->save && dx==0){
       -                if(dl->refreshfn != 0)
       -                        return -1;        /* can't unload window if it's not Refbackup */
       -                if(n > 0)
       -                        memlhide(src, r);
       -                n = unloadmemimage(dl->save, lr, data, n);
       -                return n;
       -        }
       -        tmp = allocmemimage(lr, src->chan);
       -        if(tmp == nil)
       -                return -1;
       -        memdraw(tmp, lr, src, lr.min, nil, lr.min, S);
       -        n = unloadmemimage(tmp, lr, data, n);
       -        freememimage(tmp);
       -        return n;
       -}
 (DIR) diff --git a/src/libdraw/mouse.c b/src/libdraw/mouse.c
       t@@ -6,10 +6,10 @@
        #include <mouse.h>
        
        void
       -moveto(Mousectl *m, Point pt)
       +moveto(Mousectl *mc, Point pt)
        {
       -        fprint(m->mfd, "m%d %d", pt.x, pt.y);
       -        m->xy = pt;
       +        _displaymoveto(mc->display, pt);
       +        mc->m.xy = pt;
        }
        
        void
       t@@ -18,24 +18,20 @@ closemouse(Mousectl *mc)
                if(mc == nil)
                        return;
        
       -        postnote(PNPROC, mc->pid, "kill");
       +/*        postnote(PNPROC, mc->pid, "kill"); */
        
       -        do; while(nbrecv(mc->c, &mc->Mouse) > 0);
       -
       -        close(mc->mfd);
       -        close(mc->cfd);
       -        free(mc->file);
       -        free(mc->c);
       -        free(mc->resizec);
       +        do; while(nbrecv(mc->c, &mc->m) > 0);
       +        chanfree(mc->c);
       +        chanfree(mc->resizec);
                free(mc);
        }
        
        int
        readmouse(Mousectl *mc)
        {
       -        if(mc->image)
       -                flushimage(mc->image->display, 1);
       -        if(recv(mc->c, &mc->Mouse) < 0){
       +        if(mc->display)
       +                flushimage(mc->display, 1);
       +        if(recv(mc->c, &mc->m) < 0){
                        fprint(2, "readmouse: %r\n");
                        return -1;
                }
       t@@ -46,45 +42,27 @@ static
        void
        _ioproc(void *arg)
        {
       -        int n, nerr, one;
       -        char buf[1+5*12];
       +        int one, resized;
                Mouse m;
                Mousectl *mc;
        
                mc = arg;
                threadsetname("mouseproc");
       -        one = 1;
                memset(&m, 0, sizeof m);
       -        mc->pid = getpid();
       -        nerr = 0;
       +        one = 1;
       +        resized = 0;
                for(;;){
       -                n = read(mc->mfd, buf, sizeof buf);
       -                if(n != 1+4*12){
       -                        yield();        /* if error is due to exiting, we'll exit here */
       -                        fprint(2, "mouse: bad count %d not 49: %r\n", n);
       -                        if(n<0 || ++nerr>10)
       -                                threadexits("read error");
       -                        continue;
       -                }
       -                nerr = 0;
       -                switch(buf[0]){
       -                case 'r':
       +                if(_displayrdmouse(mc->display, &m, &resized) < 0)
       +                        threadexits("read error");
       +                if(resized)
                                send(mc->resizec, &one);
       -                        /* fall through */
       -                case 'm':
       -                        m.xy.x = atoi(buf+1+0*12);
       -                        m.xy.y = atoi(buf+1+1*12);
       -                        m.buttons = atoi(buf+1+2*12);
       -                        m.msec = atoi(buf+1+3*12);
       -                        send(mc->c, &m);
       -                        /*
       -                         * mc->Mouse is updated after send so it doesn't have wrong value if we block during send.
       -                         * This means that programs should receive into mc->Mouse (see readmouse() above) if
       -                         * they want full synchrony.
       -                         */
       -                        mc->Mouse = m;
       -                        break;
       -                }
       +                send(mc->c, &m);
       +                /*
       +                 * mc->m is updated after send so it doesn't have wrong value if we block during send.
       +                 * This means that programs should receive into mc->Mouse (see readmouse() above) if
       +                 * they want full synchrony.
       +                 */
       +                mc->m = m;
                }
        }
        
       t@@ -92,50 +70,21 @@ Mousectl*
        initmouse(char *file, Image *i)
        {
                Mousectl *mc;
       -        char *t, *sl;
        
                mc = mallocz(sizeof(Mousectl), 1);
       -        if(file == nil)
       -                file = "/dev/mouse";
       -        mc->file = strdup(file);
       -        mc->mfd = open(file, ORDWR|OCEXEC);
       -        if(mc->mfd<0 && strcmp(file, "/dev/mouse")==0){
       -                bind("#m", "/dev", MAFTER);
       -                mc->mfd = open(file, ORDWR|OCEXEC);
       -        }
       -        if(mc->mfd < 0){
       -                free(mc);
       -                return nil;
       -        }
       -        t = malloc(strlen(file)+16);
       -        strcpy(t, file);
       -        sl = utfrrune(t, '/');
       -        if(sl)
       -                strcpy(sl, "/cursor");
       -        else
       -                strcpy(t, "/dev/cursor");
       -        mc->cfd = open(t, ORDWR|OCEXEC);
       -        free(t);
       -        mc->image = i;
       +        if(i)
       +                mc->display = i->display;
                mc->c = chancreate(sizeof(Mouse), 0);
                chansetname(mc->c, "mousec");
                mc->resizec = chancreate(sizeof(int), 2);
                chansetname(mc->resizec, "resizec");
       -        proccreate(_ioproc, mc, 4096);
       +        proccreate(_ioproc, mc, 32*1024);
                return mc;
        }
        
        void
        setcursor(Mousectl *mc, Cursor *c)
        {
       -        char curs[2*4+2*2*16];
       -
       -        if(c == nil)
       -                write(mc->cfd, curs, 0);
       -        else{
       -                BPLONG(curs+0*4, c->offset.x);
       -                BPLONG(curs+1*4, c->offset.y);
       -                memmove(curs+2*4, c->clr, 2*2*16);
       -                write(mc->cfd, curs, sizeof curs);
       -        }
       +        _displaycursor(mc->display, c);
        }
       +
 (DIR) diff --git a/src/libdraw/nowsys-alloc.c b/src/libdraw/nowsys-alloc.c
       t@@ -1,17 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -
       -Memimage*
       -allocmemimage(Rectangle r, u32int chan)
       -{
       -        return _allocmemimage(r, chan);
       -}
       -
       -void
       -freememimage(Memimage *m)
       -{
       -        _freememimage(m);
       -}
       -
 (DIR) diff --git a/src/libdraw/nowsys-cload.c b/src/libdraw/nowsys-cload.c
       t@@ -1,11 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -
       -int
       -cloadmemimage(Memimage *i, Rectangle r, uchar *data, int ndata)
       -{
       -        return _cloadmemimage(i, r, data, ndata);
       -}
       -
 (DIR) diff --git a/src/libdraw/nowsys-draw.c b/src/libdraw/nowsys-draw.c
       t@@ -1,15 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -
       -void
       -memimagedraw(Memimage *dst, Rectangle r, Memimage *src, Point sp,
       -        Memimage *mask, Point mp, int op)
       -{
       -        Memdrawparam *par;
       -        
       -        if((par = _memimagedrawsetup(dst, r, src, sp, mask, mp, op)) == nil)
       -                return;
       -        _memimagedraw(par);
       -}
 (DIR) diff --git a/src/libdraw/nowsys-event.c b/src/libdraw/nowsys-event.c
       t@@ -1,83 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <cursor.h>
       -#include <event.h>
       -
       -static int
       -bad(void)
       -{
       -        sysfatal("compiled with no window system support");
       -        return 0;
       -}
       -
       -ulong
       -event(Event *e)
       -{
       -        USED(e);
       -        return bad();
       -}
       -
       -ulong
       -eread(ulong keys, Event *e)
       -{
       -        USED(keys);
       -        USED(e);
       -        return bad();
       -}
       -
       -void
       -einit(ulong keys)
       -{
       -        USED(keys);
       -        bad();
       -}
       -
       -int
       -ekbd(void)
       -{
       -        return bad();
       -}
       -
       -Mouse
       -emouse(void)
       -{
       -        Mouse m;
       -        
       -        bad();
       -        return m;
       -}
       -
       -int
       -ecanread(ulong keys)
       -{
       -        USED(keys);
       -        return bad();
       -}
       -
       -int
       -ecanmouse(void)
       -{
       -        return bad();
       -}
       -
       -int
       -ecankbd(void)
       -{
       -        return bad();
       -}
       -
       -void
       -emoveto(Point p)
       -{
       -/*         USED(p); */
       -        bad();
       -}
       -
       -void
       -esetcursor(Cursor *c)
       -{
       -        USED(c);
       -        bad();
       -}
       -
 (DIR) diff --git a/src/libdraw/nowsys-fill.c b/src/libdraw/nowsys-fill.c
       t@@ -1,11 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -
       -void
       -memfillcolor(Memimage *m, u32int val)
       -{
       -        _memfillcolor(m, val);
       -}
       -
 (DIR) diff --git a/src/libdraw/nowsys-get.c b/src/libdraw/nowsys-get.c
       t@@ -1,3 +0,0 @@
       -/* so that there's *something* in this file */
       -int __nowsys__get(void) {return 0;}
       -
 (DIR) diff --git a/src/libdraw/nowsys-init.c b/src/libdraw/nowsys-init.c
       t@@ -1,47 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <keyboard.h>
       -#include <mouse.h>
       -#include <cursor.h>
       -
       -char *winsize;
       -
       -static int
       -bad(void)
       -{
       -        sysfatal("compiled with no window system support");
       -        return 0;
       -}
       -
       -Display*
       -_initdisplay(void (*error)(Display*, char*), char *label)
       -{
       -        USED(error);
       -        USED(label);
       -        
       -        bad();
       -        return nil;
       -}
       -
       -int
       -getwindow(Display *d, int ref)
       -{
       -        USED(d);
       -        USED(ref);
       -        return bad();
       -}
       -
       -int
       -drawsetlabel(char *label)
       -{
       -        USED(label);
       -        return bad();
       -}
       -
       -void
       -_flushmemscreen(Rectangle r)
       -{
       -        bad();
       -}
       -
 (DIR) diff --git a/src/libdraw/nowsys-itrans.c b/src/libdraw/nowsys-itrans.c
       t@@ -1,23 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       - 
       -static int
       -bad(void)
       -{
       -    sysfatal("compiled with no window system support");
       -    return 0;
       -}
       -
       -void
       -putsnarf(char *data)
       -{
       -        USED(data);
       -        bad();
       -}
       -
       -char*
       -getsnarf(void)
       -{
       -        bad();
       -        return nil;
       -}
 (DIR) diff --git a/src/libdraw/nowsys-keyboard.c b/src/libdraw/nowsys-keyboard.c
       t@@ -1,28 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <thread.h>
       -#include <cursor.h>
       -#include <keyboard.h>
       -
       -static int
       -bad(void)
       -{
       -        sysfatal("compiled with no window system support");
       -        return 0;
       -}
       -
       -void
       -closekeyboard(Keyboardctl *mc)
       -{
       -        USED(mc);
       -        bad();
       -}
       -
       -Keyboardctl*
       -initkeyboard(char *file)
       -{
       -        USED(file);
       -        bad();
       -        return nil;
       -}
 (DIR) diff --git a/src/libdraw/nowsys-keysym2ucs.c b/src/libdraw/nowsys-keysym2ucs.c
       t@@ -1,2 +0,0 @@
       -/* so that there's *something* in this file */
       -int __nowsys__itrans(void) {return 0;}
 (DIR) diff --git a/src/libdraw/nowsys-load.c b/src/libdraw/nowsys-load.c
       t@@ -1,11 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -
       -int
       -loadmemimage(Memimage *i, Rectangle r, uchar *data, int ndata)
       -{
       -        return _loadmemimage(i, r, data, ndata);
       -}
       -
 (DIR) diff --git a/src/libdraw/nowsys-mouse.c b/src/libdraw/nowsys-mouse.c
       t@@ -1,61 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <thread.h>
       -#include <cursor.h>
       -#include <mouse.h>
       -
       -int _wantfocuschanges;
       -static int
       -bad(void)
       -{
       -        sysfatal("compiled with no window system support");
       -        return 0;
       -}
       -
       -void
       -moveto(Mousectl *m, Point pt)
       -{
       -        USED(m);
       -/*        USED(pt); */
       -        bad();
       -}
       -
       -void
       -closemouse(Mousectl *mc)
       -{
       -        USED(mc);
       -        bad();
       -}
       -
       -int
       -readmouse(Mousectl *mc)
       -{
       -        USED(mc);
       -        return bad();
       -}
       -
       -Mousectl*
       -initmouse(char *file, Image *i)
       -{
       -        USED(file);
       -        USED(i);
       -        bad();
       -        return nil;
       -}
       -
       -void
       -setcursor(Mousectl *mc, Cursor *c)
       -{
       -        USED(mc);
       -        USED(c);
       -        bad();
       -}
       -
       -void
       -bouncemouse(Mouse *m)
       -{
       -        USED(m);
       -        bad();
       -}
       -
 (DIR) diff --git a/src/libdraw/nowsys-pixelbits.c b/src/libdraw/nowsys-pixelbits.c
       t@@ -1,12 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -
       -u32int
       -pixelbits(Memimage *m, Point p)
       -{
       -        return _pixelbits(m, p);
       -}
       -
       -
 (DIR) diff --git a/src/libdraw/nowsys-unload.c b/src/libdraw/nowsys-unload.c
       t@@ -1,11 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -
       -int
       -unloadmemimage(Memimage *i, Rectangle r, uchar *data, int ndata)
       -{
       -        return _unloadmemimage(i, r, data, ndata);
       -}
       -
 (DIR) diff --git a/src/libdraw/nowsys-wsys.c b/src/libdraw/nowsys-wsys.c
       t@@ -1,22 +0,0 @@
       -#include <u.h>
       -#include <libc.h>
       -#include <draw.h>
       -
       -static int
       -bad(void)
       -{
       -        sysfatal("compiled with no window system support");
       -        return 0;
       -}
       -
       -void
       -drawtopwindow(void)
       -{
       -        bad();
       -}
       -
       -void
       -drawresizewindow(Rectangle r)
       -{        
       -        bad();
       -}
 (DIR) diff --git a/src/libdraw/unloadimage.c b/src/libdraw/unloadimage.c
       t@@ -43,7 +43,7 @@ unloadimage(Image *i, Rectangle r, uchar *data, int ndata)
                        BPLONG(a+17, r.min.y+dy);
                        if(flushimage(d, 0) < 0)
                                return -1;
       -                n = _drawmsgread(d, data+ntot, ndata-ntot);
       +                n = _displayrddraw(d, data+ntot, ndata-ntot);
                        if(n < 0)
                                return n;
                        ntot += n;
 (DIR) diff --git a/src/libdraw/x11-alloc.c b/src/libdraw/x11-alloc.c
       t@@ -1,122 +0,0 @@
       -#include <u.h>
       -#include "x11-inc.h"
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -#include "x11-memdraw.h"
       -
       -/*
       - * Allocate a Memimage with an optional pixmap backing on the X server.
       - */
       -Memimage*
       -_xallocmemimage(Rectangle r, u32int chan, int pixmap)
       -{
       -        int d, offset;
       -        Memimage *m;
       -        Xmem *xm;
       -        XImage *xi;
       -
       -        m = _allocmemimage(r, chan);
       -        if(chan != GREY1 && chan != _x.chan)
       -                return m;
       -        if(_x.display == 0)
       -                return m;
       -
       -        /*
       -         * For bootstrapping, don't bother storing 1x1 images
       -         * on the X server.  Memimageinit needs to allocate these
       -         * and we memimageinit before we do the rest of the X stuff.
       -         * Of course, 1x1 images on the server are useless anyway.
       -         */
       -        if(Dx(r)==1 && Dy(r)==1)
       -                return m;
       -
       -        xm = mallocz(sizeof(Xmem), 1);
       -        if(xm == nil){
       -                freememimage(m);
       -                return nil;
       -        }
       -
       -        /*
       -         * Allocate backing store.
       -         */
       -        if(chan == GREY1)
       -                d = 1;
       -        else
       -                d = _x.depth;
       -        if(pixmap != PMundef)
       -                xm->pixmap = pixmap;
       -        else
       -                xm->pixmap = XCreatePixmap(_x.display, _x.drawable, Dx(r), Dy(r), d);
       -
       -        /*
       -         * We want to align pixels on word boundaries.
       -         */
       -        if(m->depth == 24)
       -                offset = r.min.x&3;
       -        else
       -                offset = r.min.x&(31/m->depth);
       -        r.min.x -= offset;
       -        assert(wordsperline(r, m->depth) <= m->width);
       -
       -        /*
       -         * Wrap our data in an XImage structure.
       -         */
       -        xi = XCreateImage(_x.display, _x.vis, d,
       -                ZPixmap, 0, (char*)m->data->bdata, Dx(r), Dy(r),
       -                32, m->width*sizeof(u32int));
       -        if(xi == nil){
       -                freememimage(m);
       -                if(xm->pixmap != pixmap)
       -                        XFreePixmap(_x.display, xm->pixmap);
       -                return nil;
       -        }
       -
       -        xm->xi = xi;
       -        xm->r = r;
       -
       -        /*
       -         * Set the XImage parameters so that it looks exactly like
       -         * a Memimage -- we're using the same data.
       -         */
       -        if(m->depth < 8 || m->depth == 24)
       -                xi->bitmap_unit = 8;
       -        else
       -                xi->bitmap_unit = m->depth;
       -        xi->byte_order = LSBFirst;
       -        xi->bitmap_bit_order = MSBFirst;
       -        xi->bitmap_pad = 32;
       -        XInitImage(xi);
       -        XFlush(_x.display);
       -
       -        m->X = xm;
       -        return m;
       -}
       -
       -Memimage*
       -allocmemimage(Rectangle r, u32int chan)
       -{
       -        return _xallocmemimage(r, chan, PMundef);
       -}
       -
       -void
       -freememimage(Memimage *m)
       -{
       -        Xmem *xm;
       -
       -        if(m == nil)
       -                return;
       -
       -        xm = m->X;
       -        if(xm && m->data->ref == 1){
       -                if(xm->xi){
       -                        xm->xi->data = nil;
       -                        XFree(xm->xi);
       -                }
       -                XFreePixmap(_x.display, xm->pixmap);
       -                free(xm);
       -                m->X = nil;
       -        }
       -        _freememimage(m);
       -}
       -
 (DIR) diff --git a/src/libdraw/x11-cload.c b/src/libdraw/x11-cload.c
       t@@ -1,18 +0,0 @@
       -#include <u.h>
       -#include "x11-inc.h"
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -#include "x11-memdraw.h"
       -
       -int
       -cloadmemimage(Memimage *i, Rectangle r, uchar *data, int ndata)
       -{
       -        int n;
       -
       -        n = _cloadmemimage(i, r, data, ndata);
       -        if(n > 0 && i->X)
       -                _xputxdata(i, r);
       -        return n;
       -}
       -
 (DIR) diff --git a/src/libdraw/x11-draw.c b/src/libdraw/x11-draw.c
       t@@ -1,144 +0,0 @@
       -#include <u.h>
       -#include "x11-inc.h"
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -#include "x11-memdraw.h"
       -
       -static int xdraw(Memdrawparam*);
       -
       -/*
       - * The X acceleration doesn't fit into the standard hwaccel
       - * model because we have the extra steps of pulling the image
       - * data off the server and putting it back when we're done.
       - */
       -void
       -memimagedraw(Memimage *dst, Rectangle r, Memimage *src, Point sp,
       -        Memimage *mask, Point mp, int op)
       -{
       -        Memdrawparam *par;
       -
       -        if((par = _memimagedrawsetup(dst, r, src, sp, mask, mp, op)) == nil)
       -                return;
       -
       -        /* only fetch dst data if we need it */
       -        if((par->state&(Simplemask|Fullmask)) != (Simplemask|Fullmask))
       -                _xgetxdata(par->dst, par->r);
       -
       -        /* always fetch source and mask */
       -        _xgetxdata(par->src, par->sr);
       -        _xgetxdata(par->mask, par->mr);
       -
       -        /* now can run memimagedraw on the in-memory bits */
       -        _memimagedraw(par);
       -
       -        if(xdraw(par))
       -                return;
       -
       -        /* put bits back on x server */
       -        _xputxdata(par->dst, par->r);
       -}
       -
       -static int
       -xdraw(Memdrawparam *par)
       -{
       -        u32int sdval;
       -        uint m, state;
       -        Memimage *src, *dst, *mask;
       -        Point dp, mp, sp;
       -        Rectangle r;
       -        Xmem *xdst, *xmask, *xsrc;
       -        XGC gc;
       -
       -        if(par->dst->X == nil)
       -                return 0;
       -
       -        dst   = par->dst;
       -        mask  = par->mask;
       -        r     = par->r;
       -        src   = par->src;
       -        state = par->state;
       -
       -        /*
       -         * If we have an opaque mask and source is one opaque pixel,
       -         * we can convert to the destination format and just XFillRectangle.
       -         */
       -        m = Simplesrc|Fullsrc|Simplemask|Fullmask;
       -        if((state&m) == m){
       -                _xfillcolor(dst, r, par->sdval);
       -        /*        xdirtyxdata(dst, r); */
       -                return 1;
       -        }
       -
       -        /*
       -         * If no source alpha and an opaque mask, we can just copy
       -         * the source onto the destination.  If the channels are the
       -         * same and the source is not replicated, XCopyArea works.
       -         */
       -        m = Simplemask|Fullmask;
       -        if((state&(m|Replsrc))==m && src->chan==dst->chan && src->X){
       -                xdst = dst->X;
       -                xsrc = src->X;
       -                dp = subpt(r.min,       dst->r.min);
       -                sp = subpt(par->sr.min, src->r.min);
       -                gc = dst->chan==GREY1 ?  _x.gccopy0 : _x.gccopy;
       -
       -                XCopyArea(_x.display, xsrc->pixmap, xdst->pixmap, gc,
       -                        sp.x, sp.y, Dx(r), Dy(r), dp.x, dp.y);
       -        /*        xdirtyxdata(dst, r); */
       -                return 1;
       -        }
       -
       -        /*
       -         * If no source alpha, a 1-bit mask, and a simple source,
       -         * we can copy through the mask onto the destination.
       -         */
       -        if(dst->X && mask->X && !(mask->flags&Frepl)
       -        && mask->chan==GREY1 && (state&Simplesrc)){
       -                xdst = dst->X;
       -                xmask = mask->X;
       -                sdval = par->sdval;
       -
       -                dp = subpt(r.min, dst->r.min);
       -                mp = subpt(r.min, subpt(par->mr.min, mask->r.min));
       -
       -                if(dst->chan == GREY1){
       -                        gc = _x.gcsimplesrc0;
       -                        if(_x.gcsimplesrc0color != sdval){
       -                                XSetForeground(_x.display, gc, sdval);
       -                                _x.gcsimplesrc0color = sdval;
       -                        }
       -                        if(_x.gcsimplesrc0pixmap != xmask->pixmap){
       -                                XSetStipple(_x.display, gc, xmask->pixmap);
       -                                _x.gcsimplesrc0pixmap = xmask->pixmap;
       -                        }
       -                }else{
       -                        /* this doesn't work on rob's mac?  */
       -                        return 0;
       -                        /* gc = _x.gcsimplesrc;
       -                        if(dst->chan == CMAP8 && _x.usetable)
       -                                sdval = _x.tox11[sdval];
       -
       -                        if(_x.gcsimplesrccolor != sdval){
       -                                XSetForeground(_x.display, gc, sdval);
       -                                _x.gcsimplesrccolor = sdval;
       -                        }
       -                        if(_x.gcsimplesrcpixmap != xmask->pixmap){
       -                                XSetStipple(_x.display, gc, xmask->pixmap);
       -                                _x.gcsimplesrcpixmap = xmask->pixmap;
       -                        }
       -                        */
       -                }
       -                XSetTSOrigin(_x.display, gc, mp.x, mp.y);
       -                XFillRectangle(_x.display, xdst->pixmap, gc, dp.x, dp.y,
       -                        Dx(r), Dy(r));
       -        /*        xdirtyxdata(dst, r); */
       -                return 1;
       -        }
       -
       -        /*
       -         * Can't accelerate.
       -         */
       -        return 0;
       -}
       -
 (DIR) diff --git a/src/libdraw/x11-event.c b/src/libdraw/x11-event.c
       t@@ -1,187 +0,0 @@
       -#include <u.h>
       -#include "x11-inc.h"
       -#include <libc.h>
       -#include <draw.h>
       -#include <cursor.h>
       -#include <event.h>
       -#include <memdraw.h>
       -#include "x11-memdraw.h"
       -
       -/*
       - * Should change this to support etimer and estartfn again.
       - * The main eread() would prepare a select mask from the keys
       - * and then call select() to wait for input.  Then it would read an
       - * event from the readied fd and return it.  Use XCheckWindowEvent
       - * to poll the X connection.
       - */
       -
       -ulong
       -event(Event *e)
       -{
       -        return eread(~0UL, e);
       -}
       -
       -static void
       -eflush(void)
       -{
       -        /* avoid generating a message if there's nothing to show. */
       -        /* this test isn't perfect, though; could do flushimage(display, 0) then call extract */
       -        /* also: make sure we don't interfere if we're multiprocessing the display */
       -        if(display->locking){
       -                /* if locking is being done by program, this means it can't depend on automatic flush in emouse() etc. */
       -                if(canqlock(&display->qlock)){
       -                        if(display->bufp > display->buf)
       -                                flushimage(display, 1);
       -                        unlockdisplay(display);
       -                }
       -        }else
       -                if(display->bufp > display->buf)
       -                        flushimage(display, 1);
       -}
       -
       -ulong
       -eread(ulong keys, Event *e)
       -{
       -        int r;
       -        ulong xmask;
       -        XEvent xevent;
       -
       -        xmask = ExposureMask;
       -
       -        eflush();
       -
       -        if(keys&Emouse)
       -                xmask |= MouseMask|StructureNotifyMask;
       -        if(keys&Ekeyboard){
       -                xmask |= KeyPressMask;
       -                if((r = _xtoplan9kbd(nil)) >= 0){
       -                        e->kbdc = r;
       -                        return Ekeyboard;
       -                }
       -        }
       -
       -        xmask |= EnterWindowMask|LeaveWindowMask;
       -
       -        XSelectInput(_x.display, _x.drawable, xmask);
       -again:
       -        XWindowEvent(_x.display, _x.drawable, xmask, &xevent);
       -
       -        switch(xevent.type){
       -        case Expose:
       -                _xexpose(&xevent, _x.display);
       -                goto again;
       -        case DestroyNotify:
       -                if(_xdestroy(&xevent, _x.display))
       -                        postnote(PNGROUP, getpgrp(), "hangup");
       -                goto again;
       -        case ConfigureNotify:
       -                if(_xconfigure(&xevent, _x.display))
       -                        eresized(1);
       -                goto again;
       -        case ButtonPress:
       -        case ButtonRelease:
       -        case MotionNotify:
       -                if(_xtoplan9mouse(_x.display, &xevent, &e->mouse) < 0)
       -                        goto again;
       -                return Emouse;
       -        case KeyPress:
       -                e->kbdc = _xtoplan9kbd(&xevent);
       -                if(e->kbdc == -1)
       -                        goto again;
       -                return Ekeyboard;
       -        default:
       -                goto again;
       -        }
       -}
       -
       -void
       -einit(ulong keys)
       -{
       -        keys &= ~(Emouse|Ekeyboard);
       -        if(keys){
       -                fprint(2, "unknown keys in einit\n");
       -                abort();
       -        }
       -}
       -
       -int
       -ekbd(void)
       -{
       -        Event e;
       -
       -        eread(Ekeyboard, &e);
       -        return e.kbdc;
       -}
       -
       -Mouse
       -emouse(void)
       -{
       -        Event e;
       -
       -        eread(Emouse, &e);
       -        return e.mouse;
       -}
       -
       -int
       -ecanread(ulong keys)
       -{
       -        int can;
       -
       -        can = 0;
       -        if(keys&Emouse)
       -                can |= ecanmouse();
       -        if(keys&Ekeyboard)
       -                can |= ecankbd();
       -        return can;
       -}
       -
       -int
       -ecanmouse(void)
       -{
       -        XEvent xe;
       -        Mouse m;
       -
       -        eflush();
       -again:
       -        if(XCheckWindowEvent(_x.display, _x.drawable, MouseMask, &xe)){
       -                if(_xtoplan9mouse(_x.display, &xe, &m) < 0)
       -                        goto again;
       -                XPutBackEvent(_x.display, &xe);
       -                return 1;
       -        }
       -        return 0;
       -}
       -
       -int
       -ecankbd(void)
       -{
       -        XEvent xe;
       -        int r;
       -
       -        eflush();
       -        if((r = _xtoplan9kbd(nil)) >= 0){
       -                _xtoplan9kbd((XEvent*)-1);
       -                return 1;
       -        }
       -again:
       -        if(XCheckWindowEvent(_x.display, _x.drawable, KeyPressMask, &xe)){
       -                if(_xtoplan9kbd(&xe) == -1)
       -                        goto again;
       -                XPutBackEvent(_x.display, &xe);
       -                return 1;
       -        }
       -        return 0;
       -}
       -
       -void
       -emoveto(Point p)
       -{
       -        _xmoveto(p);
       -}
       -
       -void
       -esetcursor(Cursor *c)
       -{
       -        _xsetcursor(c);
       -}
       -
 (DIR) diff --git a/src/libdraw/x11-fill.c b/src/libdraw/x11-fill.c
       t@@ -1,56 +0,0 @@
       -#include <u.h>
       -#include "x11-inc.h"
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -#include "x11-memdraw.h"
       -
       -void
       -memfillcolor(Memimage *m, u32int val)
       -{
       -        _memfillcolor(m, val);
       -        if(m->X == nil)
       -                return;
       -        if((val & 0xFF) == 0xFF)        /* full alpha */
       -                _xfillcolor(m, m->r, _rgbatoimg(m, val));
       -        else
       -                _xputxdata(m, m->r);
       -}
       -
       -void
       -_xfillcolor(Memimage *m, Rectangle r, u32int v)
       -{
       -        Point p;
       -        Xmem *xm;
       -        XGC gc;
       -        
       -        xm = m->X;
       -        assert(xm != nil);
       -
       -        /*
       -         * Set up fill context appropriately.
       -         */
       -        if(m->chan == GREY1){
       -                gc = _x.gcfill0;
       -                if(_x.gcfill0color != v){
       -                        XSetForeground(_x.display, gc, v);
       -                        _x.gcfill0color = v;
       -                }
       -        }else{
       -                if(m->chan == CMAP8 && _x.usetable)
       -                        v = _x.tox11[v];
       -                gc = _x.gcfill;
       -                if(_x.gcfillcolor != v){
       -                        XSetForeground(_x.display, gc, v);
       -                        _x.gcfillcolor = v;
       -                }
       -        }
       -
       -        /*
       -         * XFillRectangle takes coordinates relative to image rectangle.
       -         */
       -        p = subpt(r.min, m->r.min);
       -        XFillRectangle(_x.display, xm->pixmap, gc, p.x, p.y, Dx(r), Dy(r));
       -}
       -
       -
 (DIR) diff --git a/src/libdraw/x11-get.c b/src/libdraw/x11-get.c
       t@@ -1,112 +0,0 @@
       -#include <u.h>
       -#include "x11-inc.h"
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -#include "x11-memdraw.h"
       -
       -static void
       -addrect(Rectangle *rp, Rectangle r)
       -{
       -        if(rp->min.x >= rp->max.x)
       -                *rp = r;
       -        else
       -                combinerect(rp, r);
       -}
       -
       -XImage*
       -_xgetxdata(Memimage *m, Rectangle r)
       -{
       -        int x, y;
       -        uchar *p;
       -        Point tp, xdelta, delta;
       -        Xmem *xm;
       -        
       -        xm = m->X;
       -        if(xm == nil)
       -                return nil;
       -
       -        if(xm->dirty == 0)
       -                return xm->xi;
       -
       -        abort();        /* should never call this now */
       -
       -        r = xm->dirtyr;
       -        if(Dx(r)==0 || Dy(r)==0)
       -                return xm->xi;
       -
       -        delta = subpt(r.min, m->r.min);
       -
       -        tp = xm->r.min;        /* need temp for Digital UNIX */
       -        xdelta = subpt(r.min, tp);
       -
       -        XGetSubImage(_x.display, xm->pixmap, delta.x, delta.y, Dx(r), Dy(r),
       -                AllPlanes, ZPixmap, xm->xi, xdelta.x, delta.y);
       -
       -        if(_x.usetable && m->chan==CMAP8){
       -                for(y=r.min.y; y<r.max.y; y++)
       -                for(x=r.min.x, p=byteaddr(m, Pt(x,y)); x<r.max.x; x++, p++)
       -                        *p = _x.toplan9[*p];
       -        }
       -        xm->dirty = 0;
       -        xm->dirtyr = Rect(0,0,0,0);
       -        return xm->xi;
       -}
       -
       -void
       -_xputxdata(Memimage *m, Rectangle r)
       -{
       -        int offset, x, y;
       -        uchar *p;
       -        Point tp, xdelta, delta;
       -        Xmem *xm;
       -        XGC gc;
       -        XImage *xi;
       -
       -        xm = m->X;
       -        if(xm == nil)
       -                return;
       -
       -        xi = xm->xi;
       -        gc = m->chan==GREY1 ? _x.gccopy0 : _x.gccopy;
       -        if(m->depth == 24)
       -                offset = r.min.x & 3;
       -        else
       -                offset = r.min.x & (31/m->depth);
       -
       -        delta = subpt(r.min, m->r.min);
       -
       -        tp = xm->r.min;        /* need temporary on Digital UNIX */
       -        xdelta = subpt(r.min, tp);
       -
       -        if(_x.usetable && m->chan==CMAP8){
       -                for(y=r.min.y; y<r.max.y; y++)
       -                for(x=r.min.x, p=byteaddr(m, Pt(x,y)); x<r.max.x; x++, p++)
       -                        *p = _x.tox11[*p];
       -        }
       -
       -        XPutImage(_x.display, xm->pixmap, gc, xi, xdelta.x, xdelta.y, delta.x, delta.y,
       -                Dx(r), Dy(r));
       -        
       -        if(_x.usetable && m->chan==CMAP8){
       -                for(y=r.min.y; y<r.max.y; y++)
       -                for(x=r.min.x, p=byteaddr(m, Pt(x,y)); x<r.max.x; x++, p++)
       -                        *p = _x.toplan9[*p];
       -        }
       -}
       -
       -void
       -_xdirtyxdata(Memimage *m, Rectangle r)
       -{
       -        Xmem *xm;
       -
       -        xm = m->X;
       -        if(xm == nil)
       -                return;
       -
       -        xm->dirty = 1;
       -        addrect(&xm->dirtyr, r);
       -}
       -
       -
       -
 (DIR) diff --git a/src/libdraw/x11-inc.h b/src/libdraw/x11-inc.h
       t@@ -1,31 +0,0 @@
       -#define Colormap        XColormap
       -#define Cursor                XCursor
       -#define Display                XDisplay
       -#define Drawable        XDrawable
       -#define Font                XFont
       -#define GC                XGC
       -#define Point                XPoint
       -#define Rectangle        XRectangle
       -#define Screen                XScreen
       -#define Visual                XVisual
       -#define Window                XWindow
       -
       -#include <X11/Xlib.h>
       -#include <X11/Xatom.h>
       -#include <X11/Xutil.h>
       -#include <X11/keysym.h>
       -#include <X11/IntrinsicP.h>
       -#include <X11/StringDefs.h>
       -
       -#undef Colormap
       -#undef Cursor
       -#undef Display
       -#undef Drawable
       -#undef Font
       -#undef GC
       -#undef Point
       -#undef Rectangle
       -#undef Screen
       -#undef Visual
       -#undef Window
       -
 (DIR) diff --git a/src/libdraw/x11-init.c b/src/libdraw/x11-init.c
       t@@ -1,940 +0,0 @@
       -/*
       - * Some of the stuff in this file is not X-dependent and should be elsewhere.
       - */
       -#include <u.h>
       -#include "x11-inc.h"
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -#include <keyboard.h>
       -#include <mouse.h>
       -#include <cursor.h>
       -#include "x11-memdraw.h"
       -
       -char *winsize;
       -static int parsewinsize(char*, Rectangle*, int*);
       -
       -static Memimage        *xattach(char*);
       -static void        plan9cmap(void);
       -static int        setupcmap(XWindow);
       -static int        xreplacescreenimage(void);
       -static XGC        xgc(XDrawable, int, int);
       -static Image        *getimage0(Display*, Image*);
       -
       -Xprivate _x;
       -
       -Display*
       -_initdisplay(void (*error)(Display*, char*), char *label)
       -{
       -        Display *d;
       -        Memimage *m;
       -
       -        /*
       -         * This rfork(RFNOTEG) isn't exactly right,
       -         * but we need some way to signal window 
       -         * closes.  Right now we post a hangup
       -         * note to the note group, which kills a whole
       -         * lot more than just the current program
       -         * if we don't do this.
       -         */
       -        /*
       -         * Actually, I don't know what I changed but
       -         * this appears not to be necessary anymore.
       -         * I'll regret this probably.
       -        rfork(RFNOTEG);
       -        */
       -        memimageinit();
       -
       -        d = mallocz(sizeof(Display), 1);
       -        if(d == nil)
       -                return nil;
       -
       -        d->buf = malloc(16000+5);
       -        d->obuf = malloc(16000);
       -        if(d->buf == nil || d->obuf == nil){
       -                free(d->buf);
       -                free(d->obuf);
       -                free(d);
       -                return nil;
       -        }
       -        d->bufsize = 16000;
       -        d->obufsize = 16000;
       -        d->bufp = d->buf;
       -        d->obufp = d->obuf;
       -
       -        m = xattach(label);
       -        if(m == nil){
       -                free(d);
       -                return nil;
       -        }
       -
       -        d->error = error;
       -        _initdisplaymemimage(d, m);
       -        d->image = getimage0(d, 0);
       -        
       -        return d;
       -}
       -
       -static Image*
       -getimage0(Display *d, Image *image)
       -{
       -        char info[12*12+1];
       -        uchar *a;
       -        int n;
       -        extern int _freeimage1(Image*);
       -
       -        /*
       -         * If there's an old screen, it has id 0.  The 'J' request below
       -         * will try to install the new screen as id 0, so the old one 
       -         * must be freed first.
       -         */
       -        if(image){
       -                _freeimage1(image);
       -                memset(image, 0, sizeof(Image));
       -        }
       -
       -        a = bufimage(d, 2);
       -        a[0] = 'J';
       -        a[1] = 'I';
       -        if(flushimage(d, 0) < 0){
       -                fprint(2, "cannot read screen info: %r\n");
       -                abort();
       -        }
       -
       -        n = _drawmsgread(d, info, sizeof info);
       -        if(n != 12*12){
       -                fprint(2, "short screen info\n");
       -                abort();
       -        }
       -
       -        if(image == nil){
       -                image = mallocz(sizeof(Image), 1);
       -                if(image == nil){
       -                        fprint(2, "cannot allocate image: %r\n");
       -                        abort();
       -                }
       -        }
       -
       -        image->display = d;
       -        image->id = 0;
       -        image->chan = strtochan(info+2*12);
       -        image->depth = chantodepth(image->chan);
       -        image->repl = atoi(info+3*12);
       -        image->r.min.x = atoi(info+4*12);
       -        image->r.min.y = atoi(info+5*12);
       -        image->r.max.x = atoi(info+6*12);
       -        image->r.max.y = atoi(info+7*12);
       -        image->clipr.min.x = atoi(info+8*12);
       -        image->clipr.min.y = atoi(info+9*12);
       -        image->clipr.max.x = atoi(info+10*12);
       -        image->clipr.max.y = atoi(info+11*12);
       -        return image;
       -}
       -
       -int
       -getwindow(Display *d, int ref)
       -{
       -        Image *i;
       -        Image *oi;
       -
       -        if(_x.destroyed){
       -                postnote(PNGROUP, getpgrp(), "hangup");
       -                return -1;
       -        }
       -        if(xreplacescreenimage() == 0)
       -                return 0;
       -
       -        /*
       -         * Libdraw promises not to change the value of "screen",
       -         * so we have to reuse the image structure
       -         * memory we already have.
       -         */
       -        oi = d->image;
       -        i = getimage0(d, oi);
       -        d->image = i;
       -        /* fprint(2, "getwindow %p -> %p\n", oi, i); */
       -
       -        freescreen(_screen);
       -        _screen = allocscreen(i, d->white, 0);
       -        _freeimage1(screen);
       -        screen = _allocwindow(screen, _screen, i->r, ref, DWhite);
       -        d->screenimage = screen;
       -        return 0;
       -}
       -
       -static int
       -xerror(XDisplay *d, XErrorEvent *e)
       -{
       -        char buf[200];
       -
       -        if(e->request_code == 42) /* XSetInputFocus */
       -                return 0;
       -        if(e->request_code == 18) /* XChangeProperty */
       -                return 0;
       -
       -        print("X error: error_code=%d, request_code=%d, minor=%d disp=%p\n",
       -                e->error_code, e->request_code, e->minor_code, d);
       -        XGetErrorText(d, e->error_code, buf, sizeof buf);
       -        print("%s\n", buf);
       -        return 0;
       -}
       -
       -static int
       -xioerror(XDisplay *d)
       -{
       -        /*print("X I/O error\n"); */
       -        sysfatal("X I/O error\n");
       -        abort();
       -        return -1;
       -}
       -
       -
       -static Memimage*
       -xattach(char *label)
       -{
       -        char *argv[2], *disp;
       -        int i, havemin, height, mask, n, width, x, xrootid, y;
       -        Rectangle r;
       -        XClassHint classhint;
       -        XDrawable pmid;
       -        XPixmapFormatValues *pfmt;
       -        XScreen *xscreen;
       -        XSetWindowAttributes attr;
       -        XSizeHints normalhint;
       -        XTextProperty name;
       -        XVisualInfo xvi;
       -        XWindow xrootwin;
       -        XWindowAttributes wattr;
       -        XWMHints hint;
       -        Atom atoms[2];
       -
       -        /*
       -        if(XInitThreads() == 0){
       -                fprint(2, "XInitThreads failed\n");
       -                abort();
       -        }
       -        */
       -
       -        /*
       -         * Connect to X server.
       -         */
       -        _x.display = XOpenDisplay(NULL);
       -        if(_x.display == nil){
       -                disp = getenv("DISPLAY");
       -                werrstr("XOpenDisplay %s: %r", disp ? disp : ":0");
       -                free(disp);
       -                return nil;
       -        }
       -        XSetErrorHandler(xerror);
       -        XSetIOErrorHandler(xioerror);
       -        xrootid = DefaultScreen(_x.display);
       -        xrootwin = DefaultRootWindow(_x.display);
       -
       -        /* 
       -         * Figure out underlying screen format.
       -         */
       -        if(XMatchVisualInfo(_x.display, xrootid, 16, TrueColor, &xvi)
       -        || XMatchVisualInfo(_x.display, xrootid, 16, DirectColor, &xvi)){
       -                _x.vis = xvi.visual;
       -                _x.depth = 16;
       -        }
       -        else
       -        if(XMatchVisualInfo(_x.display, xrootid, 15, TrueColor, &xvi)
       -        || XMatchVisualInfo(_x.display, xrootid, 15, DirectColor, &xvi)){
       -                _x.vis = xvi.visual;
       -                _x.depth = 15;
       -        }
       -        else
       -        if(XMatchVisualInfo(_x.display, xrootid, 24, TrueColor, &xvi)
       -        || XMatchVisualInfo(_x.display, xrootid, 24, DirectColor, &xvi)){
       -                _x.vis = xvi.visual;
       -                _x.depth = 24;
       -        }
       -        else
       -        if(XMatchVisualInfo(_x.display, xrootid, 8, PseudoColor, &xvi)
       -        || XMatchVisualInfo(_x.display, xrootid, 8, StaticColor, &xvi)){
       -                if(_x.depth > 8){
       -                        werrstr("can't deal with colormapped depth %d screens",
       -                                _x.depth);
       -                        goto err0;
       -                }
       -                _x.vis = xvi.visual;
       -                _x.depth = 8;
       -        }
       -        else{
       -                _x.depth = DefaultDepth(_x.display, xrootid);
       -                if(_x.depth != 8){
       -                        werrstr("can't understand depth %d screen", _x.depth);
       -                        goto err0;
       -                }
       -                _x.vis = DefaultVisual(_x.display, xrootid);
       -        }
       -
       -        if(DefaultDepth(_x.display, xrootid) == _x.depth)
       -                _x.usetable = 1;
       -
       -        /*
       -         * _x.depth is only the number of significant pixel bits,
       -         * not the total number of pixel bits.  We need to walk the
       -         * display list to find how many actual bits are used
       -         * per pixel.
       -         */
       -        _x.chan = 0;
       -        pfmt = XListPixmapFormats(_x.display, &n);
       -        for(i=0; i<n; i++){
       -                if(pfmt[i].depth == _x.depth){
       -                        switch(pfmt[i].bits_per_pixel){
       -                        case 1:        /* untested */
       -                                _x.chan = GREY1;
       -                                break;
       -                        case 2:        /* untested */
       -                                _x.chan = GREY2;
       -                                break;
       -                        case 4:        /* untested */
       -                                _x.chan = GREY4;
       -                                break;
       -                        case 8:
       -                                _x.chan = CMAP8;
       -                                break;
       -                        case 15:
       -                                _x.chan = RGB15;
       -                                break;
       -                        case 16: /* how to tell RGB15? */
       -                                _x.chan = RGB16;
       -                                break;
       -                        case 24: /* untested (impossible?) */
       -                                _x.chan = RGB24;
       -                                break;
       -                        case 32:
       -                                _x.chan = XRGB32;
       -                                break;
       -                        }
       -                }
       -        }
       -        if(_x.chan == 0){
       -                werrstr("could not determine screen pixel format");
       -                goto err0;
       -        }
       -
       -        /*
       -         * Set up color map if necessary.
       -         */
       -        xscreen = DefaultScreenOfDisplay(_x.display);
       -        _x.cmap = DefaultColormapOfScreen(xscreen);
       -        if(_x.vis->class != StaticColor){
       -                plan9cmap();
       -                setupcmap(xrootwin);
       -        }
       -
       -        /*
       -         * We get to choose the initial rectangle size.
       -         * This is arbitrary.  In theory we should read the
       -         * command line and allow the traditional X options.
       -         */
       -        mask = 0;
       -        x = 0;
       -        y = 0;
       -        if(winsize){
       -                if(parsewinsize(winsize, &r, &havemin) < 0)
       -                        sysfatal("%r");
       -        }else{
       -                /*
       -                 * Parse the various X resources.  Thanks to Peter Canning.
       -                 */
       -                char *screen_resources, *display_resources, *geom, 
       -                        *geomrestype, *home, *file;
       -                XrmDatabase database;
       -                XrmValue geomres;
       -
       -                database = XrmGetDatabase(_x.display);
       -                screen_resources = XScreenResourceString(xscreen);
       -                if(screen_resources != nil){
       -                        XrmCombineDatabase(XrmGetStringDatabase(screen_resources), &database, False);
       -                        XFree(screen_resources);
       -                }
       -
       -                display_resources = XResourceManagerString(_x.display);
       -                if(display_resources == nil){
       -                        home = getenv("HOME");
       -                        if(home!=nil && (file=smprint("%s/.Xdefaults", home)) != nil){
       -                                XrmCombineFileDatabase(file, &database, False);
       -                                free(file);
       -                        }
       -                        free(home);
       -                }else
       -                        XrmCombineDatabase(XrmGetStringDatabase(display_resources), &database, False);
       -
       -                geom = smprint("%s.geometry", label);
       -                if(geom && XrmGetResource(database, geom, nil, &geomrestype, &geomres))
       -                        mask = XParseGeometry(geomres.addr, &x, &y, (uint*)&width, (uint*)&height);
       -                free(geom);
       -
       -                if((mask & WidthValue) && (mask & HeightValue)){
       -                        r = Rect(0, 0, width, height);
       -                }else{
       -                        r = Rect(0, 0, WidthOfScreen(xscreen)*3/4,
       -                                        HeightOfScreen(xscreen)*3/4);
       -                        if(Dx(r) > Dy(r)*3/2)
       -                                r.max.x = r.min.x + Dy(r)*3/2;
       -                        if(Dy(r) > Dx(r)*3/2)
       -                                r.max.y = r.min.y + Dx(r)*3/2;
       -                }
       -                if(mask & XNegative){
       -                        x += WidthOfScreen(xscreen);
       -                }
       -                if(mask & YNegative){
       -                        y += HeightOfScreen(xscreen);
       -                }
       -                havemin = 0;
       -        }
       -
       -        memset(&attr, 0, sizeof attr);
       -        attr.colormap = _x.cmap;
       -        attr.background_pixel = ~0;
       -        attr.border_pixel = 0;
       -        _x.drawable = XCreateWindow(
       -                _x.display,        /* display */
       -                xrootwin,        /* parent */
       -                x,                /* x */
       -                y,                /* y */
       -                Dx(r),                /* width */
       -                 Dy(r),                /* height */
       -                0,                /* border width */
       -                _x.depth,        /* depth */
       -                InputOutput,        /* class */
       -                _x.vis,                /* visual */
       -                                /* valuemask */
       -                CWBackPixel|CWBorderPixel|CWColormap,
       -                &attr                /* attributes (the above aren't?!) */
       -        );
       -
       -        /*
       -         * Label and other properties required by ICCCCM.
       -         */
       -        memset(&name, 0, sizeof name);
       -        if(label == nil)
       -                label = "pjw-face-here";
       -        name.value = (uchar*)label;
       -        name.encoding = XA_STRING;
       -        name.format = 8;
       -        name.nitems = strlen((char*)name.value);
       -
       -        memset(&normalhint, 0, sizeof normalhint);
       -        normalhint.flags = PSize|PMaxSize;
       -        if(winsize){
       -                normalhint.flags &= ~PSize;
       -                normalhint.flags |= USSize;
       -                normalhint.width = Dx(r);
       -                normalhint.height = Dy(r);
       -        }else{
       -                if((mask & WidthValue) && (mask & HeightValue)){
       -                        normalhint.flags &= ~PSize;
       -                        normalhint.flags |= USSize;
       -                        normalhint.width = width;
       -                        normalhint.height = height;
       -                }
       -                if((mask & WidthValue) && (mask & HeightValue)){
       -                        normalhint.flags |= USPosition;
       -                        normalhint.x = x;
       -                        normalhint.y = y;
       -                }
       -        }
       -
       -        normalhint.max_width = WidthOfScreen(xscreen);
       -        normalhint.max_height = HeightOfScreen(xscreen);
       -
       -        memset(&hint, 0, sizeof hint);
       -        hint.flags = InputHint|StateHint;
       -        hint.input = 1;
       -        hint.initial_state = NormalState;
       -
       -        memset(&classhint, 0, sizeof classhint);
       -        classhint.res_name = label;
       -        classhint.res_class = label;
       -
       -        argv[0] = label;
       -        argv[1] = nil;
       -
       -        XSetWMProperties(
       -                _x.display,        /* display */
       -                _x.drawable,        /* window */
       -                &name,                /* XA_WM_NAME property */
       -                &name,                /* XA_WM_ICON_NAME property */
       -                argv,                /* XA_WM_COMMAND */
       -                1,                /* argc */
       -                &normalhint,        /* XA_WM_NORMAL_HINTS */
       -                &hint,                /* XA_WM_HINTS */
       -                &classhint        /* XA_WM_CLASSHINTS */
       -        );
       -        XFlush(_x.display);
       -
       -        if(havemin){
       -                XWindowChanges ch;
       -
       -                memset(&ch, 0, sizeof ch);
       -                ch.x = r.min.x;
       -                ch.y = r.min.y;
       -                XConfigureWindow(_x.display, _x.drawable, CWX|CWY, &ch);
       -                /*
       -                 * Must pretend origin is 0,0 for X.
       -                 */
       -                r = Rect(0,0,Dx(r),Dy(r));
       -        }
       -        /*
       -         * Look up clipboard atom.
       -         */
       -        _x.clipboard = XInternAtom(_x.display, "CLIPBOARD", False);
       -        _x.utf8string = XInternAtom(_x.display, "UTF8_STRING", False);
       -        _x.targets = XInternAtom(_x.display, "TARGETS", False);
       -        _x.text = XInternAtom(_x.display, "TEXT", False);
       -        _x.compoundtext = XInternAtom(_x.display, "COMPOUND_TEXT", False);
       -        _x.takefocus = XInternAtom(_x.display, "WM_TAKE_FOCUS", False);
       -        _x.losefocus = XInternAtom(_x.display, "_9WM_LOSE_FOCUS", False);
       -        _x.wmprotos = XInternAtom(_x.display, "WM_PROTOCOLS", False);
       -
       -        atoms[0] = _x.takefocus;
       -        atoms[1] = _x.losefocus;
       -        XChangeProperty(_x.display, _x.drawable, _x.wmprotos, XA_ATOM, 32,
       -                PropModeReplace, (uchar*)atoms, 2);
       -
       -        /*
       -         * Put the window on the screen, check to see what size we actually got.
       -         */
       -        XMapWindow(_x.display, _x.drawable);
       -        XSync(_x.display, False);
       -
       -        if(!XGetWindowAttributes(_x.display, _x.drawable, &wattr))
       -                fprint(2, "XGetWindowAttributes failed\n");
       -        else if(wattr.width && wattr.height){
       -                if(wattr.width != Dx(r) || wattr.height != Dy(r)){
       -                        r.max.x = wattr.width;
       -                        r.max.y = wattr.height;
       -                }
       -        }else
       -                fprint(2, "XGetWindowAttributes: bad attrs\n");
       -
       -        /*
       -         * Allocate our local backing store.
       -         */
       -        _x.screenr = r;
       -        _x.screenpm = XCreatePixmap(_x.display, _x.drawable, Dx(r), Dy(r), _x.depth);
       -        _x.nextscreenpm = _x.screenpm;
       -        _x.screenimage = _xallocmemimage(r, _x.chan, _x.screenpm);
       -
       -        /*
       -         * Allocate some useful graphics contexts for the future.
       -         */
       -        _x.gcfill        = xgc(_x.screenpm, FillSolid, -1);
       -        _x.gccopy        = xgc(_x.screenpm, -1, -1);
       -        _x.gcsimplesrc         = xgc(_x.screenpm, FillStippled, -1);
       -        _x.gczero        = xgc(_x.screenpm, -1, -1);
       -        _x.gcreplsrc        = xgc(_x.screenpm, FillTiled, -1);
       -
       -        pmid = XCreatePixmap(_x.display, _x.drawable, 1, 1, 1);
       -        _x.gcfill0        = xgc(pmid, FillSolid, 0);
       -        _x.gccopy0        = xgc(pmid, -1, -1);
       -        _x.gcsimplesrc0        = xgc(pmid, FillStippled, -1);
       -        _x.gczero0        = xgc(pmid, -1, -1);
       -        _x.gcreplsrc0        = xgc(pmid, FillTiled, -1);
       -        XFreePixmap(_x.display, pmid);
       -
       -        /*
       -         * Lots of display connections for various procs.
       -         */
       -        _x.kbdcon        = XOpenDisplay(NULL);
       -        _x.mousecon        = XOpenDisplay(NULL);
       -        _x.snarfcon        = XOpenDisplay(NULL);
       -
       -        if(0) fprint(2, "x: display=%p kbd=%p mouse=%p snarf=%p\n",
       -                _x.display, _x.kbdcon, _x.mousecon, _x.snarfcon);
       -
       -        return _x.screenimage;
       -
       -err0:
       -        /*
       -         * Should do a better job of cleaning up here.
       -         */
       -        XCloseDisplay(_x.display);
       -        return nil;
       -}
       -
       -int
       -drawsetlabel(char *label)
       -{
       -        XTextProperty name;
       -
       -        /*
       -         * Label and other properties required by ICCCCM.
       -         */
       -        memset(&name, 0, sizeof name);
       -        if(label == nil)
       -                label = "pjw-face-here";
       -        name.value = (uchar*)label;
       -        name.encoding = XA_STRING;
       -        name.format = 8;
       -        name.nitems = strlen((char*)name.value);
       -
       -        XSetWMProperties(
       -                _x.display,        /* display */
       -                _x.drawable,        /* window */
       -                &name,                /* XA_WM_NAME property */
       -                &name,                /* XA_WM_ICON_NAME property */
       -                nil,                /* XA_WM_COMMAND */
       -                0,                /* argc */
       -                nil,                /* XA_WM_NORMAL_HINTS */
       -                nil,                /* XA_WM_HINTS */
       -                nil        /* XA_WM_CLASSHINTS */
       -        );
       -        XFlush(_x.display);
       -        return 0;
       -}
       -
       -/*
       - * Create a GC with a particular fill style and XXX.
       - * Disable generation of GraphicsExpose/NoExpose events in the GC.
       - */
       -static XGC
       -xgc(XDrawable d, int fillstyle, int foreground)
       -{
       -        XGC gc;
       -        XGCValues v;
       -
       -        memset(&v, 0, sizeof v);
       -        v.function = GXcopy;
       -        v.graphics_exposures = False;
       -        gc = XCreateGC(_x.display, d, GCFunction|GCGraphicsExposures, &v);
       -        if(fillstyle != -1)
       -                XSetFillStyle(_x.display, gc, fillstyle);
       -        if(foreground != -1)
       -                XSetForeground(_x.display, gc, 0);
       -        return gc;
       -}
       -
       -
       -/*
       - * Initialize map with the Plan 9 rgbv color map.
       - */
       -static void
       -plan9cmap(void)
       -{
       -        int r, g, b, cr, cg, cb, v, num, den, idx, v7, idx7;
       -        static int once;
       -
       -        if(once)
       -                return;
       -        once = 1;
       -
       -        for(r=0; r!=4; r++)
       -        for(g = 0; g != 4; g++)
       -        for(b = 0; b!=4; b++)
       -        for(v = 0; v!=4; v++){
       -                den=r;
       -                if(g > den)
       -                        den=g;
       -                if(b > den)
       -                        den=b;
       -                /* divide check -- pick grey shades */
       -                if(den==0)
       -                        cr=cg=cb=v*17;
       -                else {
       -                        num=17*(4*den+v);
       -                        cr=r*num/den;
       -                        cg=g*num/den;
       -                        cb=b*num/den;
       -                }
       -                idx = r*64 + v*16 + ((g*4 + b + v - r) & 15);
       -                _x.map[idx].red = cr*0x0101;
       -                _x.map[idx].green = cg*0x0101;
       -                _x.map[idx].blue = cb*0x0101;
       -                _x.map[idx].pixel = idx;
       -                _x.map[idx].flags = DoRed|DoGreen|DoBlue;
       -
       -                v7 = v >> 1;
       -                idx7 = r*32 + v7*16 + g*4 + b;
       -                if((v & 1) == v7){
       -                        _x.map7to8[idx7][0] = idx;
       -                        if(den == 0) {                 /* divide check -- pick grey shades */
       -                                cr = ((255.0/7.0)*v7)+0.5;
       -                                cg = cr;
       -                                cb = cr;
       -                        }
       -                        else {
       -                                num=17*15*(4*den+v7*2)/14;
       -                                cr=r*num/den;
       -                                cg=g*num/den;
       -                                cb=b*num/den;
       -                        }
       -                        _x.map7[idx7].red = cr*0x0101;
       -                        _x.map7[idx7].green = cg*0x0101;
       -                        _x.map7[idx7].blue = cb*0x0101;
       -                        _x.map7[idx7].pixel = idx7;
       -                        _x.map7[idx7].flags = DoRed|DoGreen|DoBlue;
       -                }
       -                else
       -                        _x.map7to8[idx7][1] = idx;
       -        }
       -}
       -
       -/*
       - * Initialize and install the rgbv color map as a private color map
       - * for this application.  It gets the best colors when it has the
       - * cursor focus.
       - *
       - * We always choose the best depth possible, but that might not
       - * be the default depth.  On such "suboptimal" systems, we have to allocate an
       - * empty color map anyway, according to Axel Belinfante.
       - */
       -static int 
       -setupcmap(XWindow w)
       -{
       -        char buf[30];
       -        int i;
       -        u32int p, pp;
       -        XColor c;
       -
       -        if(_x.depth <= 1)
       -                return 0;
       -
       -        if(_x.depth >= 24) {
       -                if(_x.usetable == 0)
       -                        _x.cmap = XCreateColormap(_x.display, w, _x.vis, AllocNone); 
       -
       -                /*
       -                 * The pixel value returned from XGetPixel needs to
       -                 * be converted to RGB so we can call rgb2cmap()
       -                 * to translate between 24 bit X and our color. Unfortunately,
       -                 * the return value appears to be display server endian 
       -                 * dependant. Therefore, we run some heuristics to later
       -                 * determine how to mask the int value correctly.
       -                 * Yeah, I know we can look at _x.vis->byte_order but 
       -                 * some displays say MSB even though they run on LSB.
       -                 * Besides, this is more anal.
       -                 */
       -                c = _x.map[19];        /* known to have different R, G, B values */
       -                if(!XAllocColor(_x.display, _x.cmap, &c)){
       -                        werrstr("XAllocColor: %r");
       -                        return -1;
       -                }
       -                p  = c.pixel;
       -                pp = rgb2cmap((p>>16)&0xff,(p>>8)&0xff,p&0xff);
       -                if(pp != _x.map[19].pixel) {
       -                        /* check if endian is other way */
       -                        pp = rgb2cmap(p&0xff,(p>>8)&0xff,(p>>16)&0xff);
       -                        if(pp != _x.map[19].pixel){
       -                                werrstr("cannot detect X server byte order");
       -                                return -1;
       -                        }
       -
       -                        switch(_x.chan){
       -                        case RGB24:
       -                                _x.chan = BGR24;
       -                                break;
       -                        case XRGB32:
       -                                _x.chan = XBGR32;
       -                                break;
       -                        default:
       -                                werrstr("cannot byteswap channel %s",
       -                                        chantostr(buf, _x.chan));
       -                                break;
       -                        }
       -                }
       -        }else if(_x.vis->class == TrueColor || _x.vis->class == DirectColor){
       -                /*
       -                 * Do nothing.  We have no way to express a
       -                 * mixed-endian 16-bit screen, so pretend they don't exist.
       -                 */
       -                if(_x.usetable == 0)
       -                        _x.cmap = XCreateColormap(_x.display, w, _x.vis, AllocNone);
       -        }else if(_x.vis->class == PseudoColor){
       -                if(_x.usetable == 0){
       -                        _x.cmap = XCreateColormap(_x.display, w, _x.vis, AllocAll); 
       -                        XStoreColors(_x.display, _x.cmap, _x.map, 256);
       -                        for(i = 0; i < 256; i++){
       -                                _x.tox11[i] = i;
       -                                _x.toplan9[i] = i;
       -                        }
       -                }else{
       -                        for(i = 0; i < 128; i++){
       -                                c = _x.map7[i];
       -                                if(!XAllocColor(_x.display, _x.cmap, &c)){
       -                                        werrstr("can't allocate colors in 7-bit map");
       -                                        return -1;
       -                                }
       -                                _x.tox11[_x.map7to8[i][0]] = c.pixel;
       -                                _x.tox11[_x.map7to8[i][1]] = c.pixel;
       -                                _x.toplan9[c.pixel] = _x.map7to8[i][0];
       -                        }
       -                }
       -        }else{
       -                werrstr("unsupported visual class %d", _x.vis->class);
       -                return -1;
       -        }
       -        return 0;
       -}
       -
       -void
       -_flushmemscreen(Rectangle r)
       -{
       -        if(_x.nextscreenpm != _x.screenpm){
       -                qlock(&_x.screenlock);
       -                XSync(_x.display, False);
       -                XFreePixmap(_x.display, _x.screenpm);
       -                _x.screenpm = _x.nextscreenpm;
       -                qunlock(&_x.screenlock);
       -        }
       -
       -        if(r.min.x >= r.max.x || r.min.y >= r.max.y)
       -                return;
       -        XCopyArea(_x.display, _x.screenpm, _x.drawable, _x.gccopy, r.min.x, r.min.y,
       -                Dx(r), Dy(r), r.min.x, r.min.y);
       -        XFlush(_x.display);
       -}
       -
       -void
       -_xexpose(XEvent *e, XDisplay *xd)
       -{
       -        XExposeEvent *xe;
       -        Rectangle r;
       -
       -        qlock(&_x.screenlock);
       -        if(_x.screenpm != _x.nextscreenpm){
       -                qunlock(&_x.screenlock);
       -                return;
       -        }
       -        xe = (XExposeEvent*)e;
       -        r.min.x = xe->x;
       -        r.min.y = xe->y;
       -        r.max.x = xe->x+xe->width;
       -        r.max.y = xe->y+xe->height;
       -        XCopyArea(xd, _x.screenpm, _x.drawable, _x.gccopy, r.min.x, r.min.y,
       -                Dx(r), Dy(r), r.min.x, r.min.y);
       -        XSync(xd, False);
       -        qunlock(&_x.screenlock);
       -}
       -
       -int
       -_xdestroy(XEvent *e, XDisplay *xd)
       -{
       -        XDestroyWindowEvent *xe;
       -
       -        xe = (XDestroyWindowEvent*)e;
       -        if(xe->window == _x.drawable){
       -                _x.destroyed = 1;
       -                return 1;
       -        }
       -        return 0;
       -}
       -
       -int
       -_xconfigure(XEvent *e, XDisplay *xd)
       -{
       -        Rectangle r;
       -        XConfigureEvent *xe = (XConfigureEvent*)e;
       -
       -        if(xe->width == Dx(_x.screenr) && xe->height == Dy(_x.screenr))
       -                return 0;
       -        if(xe->width==0 || xe->height==0)
       -                fprint(2, "ignoring resize to %dx%d\n", xe->width, xe->height);
       -        r = Rect(0, 0, xe->width, xe->height);
       -        qlock(&_x.screenlock);
       -        if(_x.screenpm != _x.nextscreenpm){
       -                XCopyArea(xd, _x.screenpm, _x.drawable, _x.gccopy, r.min.x, r.min.y,
       -                        Dx(r), Dy(r), r.min.x, r.min.y);
       -                XSync(xd, False);
       -        }
       -        qunlock(&_x.screenlock);
       -        _x.newscreenr = r;
       -        return 1;
       -}
       -
       -static int
       -xreplacescreenimage(void)
       -{
       -        Memimage *m;
       -        XDrawable pixmap;
       -        Rectangle r;
       -
       -        r = _x.newscreenr;
       -        if(eqrect(_x.screenr, r))
       -                return 0;
       -
       -        pixmap = XCreatePixmap(_x.display, _x.drawable, Dx(r), Dy(r), _x.depth);
       -        m = _xallocmemimage(r, _x.chan, pixmap);
       -        if(_x.nextscreenpm != _x.screenpm)
       -                XFreePixmap(_x.display, _x.nextscreenpm);
       -        _x.nextscreenpm = pixmap;
       -        _x.screenr = r;
       -        _drawreplacescreenimage(m);
       -        return 1;
       -}
       -
       -static int
       -parsewinsize(char *s, Rectangle *r, int *havemin)
       -{
       -        char c, *os;
       -        int i, j, k, l;
       -
       -        os = s;
       -        *havemin = 0;
       -        *r = Rect(0,0,0,0);
       -        if(!isdigit((uchar)*s))
       -                goto oops;
       -        i = strtol(s, &s, 0);
       -        if(*s == 'x'){
       -                s++;
       -                if(!isdigit((uchar)*s))
       -                        goto oops;
       -                j = strtol(s, &s, 0);
       -                r->max.x = i;
       -                r->max.y = j;
       -                if(*s == 0)
       -                        return 0;
       -                if(*s != '@')
       -                        goto oops;
       -
       -                s++;
       -                if(!isdigit((uchar)*s))
       -                        goto oops;
       -                i = strtol(s, &s, 0);
       -                if(*s != ',' && *s != ' ')
       -                        goto oops;
       -                s++;
       -                if(!isdigit((uchar)*s))
       -                        goto oops;
       -                j = strtol(s, &s, 0);
       -                if(*s != 0)
       -                        goto oops;
       -                *r = rectaddpt(*r, Pt(i,j));
       -                *havemin = 1;
       -                return 0;
       -        }
       -
       -        c = *s;
       -        if(c != ' ' && c != ',')
       -                goto oops;
       -        s++;
       -        if(!isdigit((uchar)*s))
       -                goto oops;
       -        j = strtol(s, &s, 0);
       -        if(*s != c)
       -                goto oops;
       -        s++;
       -        if(!isdigit((uchar)*s))
       -                goto oops;
       -        k = strtol(s, &s, 0);
       -        if(*s != c)
       -                goto oops;
       -        s++;
       -        if(!isdigit((uchar)*s))
       -                goto oops;
       -        l = strtol(s, &s, 0);
       -        if(*s != 0)
       -                goto oops;
       -        *r = Rect(i,j,k,l);
       -        *havemin = 1;
       -        return 0;
       -
       -oops:
       -        werrstr("bad syntax in window size '%s'", os);
       -        return -1;
       -}
 (DIR) diff --git a/src/libdraw/x11-itrans.c b/src/libdraw/x11-itrans.c
       t@@ -1,675 +0,0 @@
       -/* input event and data structure translation */
       -
       -#include <u.h>
       -#include "x11-inc.h"
       -#ifdef __APPLE__
       -#define APPLESNARF
       -#define Boolean AppleBoolean
       -#define Rect AppleRect
       -#define EventMask AppleEventMask
       -#define Point ApplePoint
       -#define Cursor AppleCursor
       -#include <Carbon/Carbon.h>
       -AUTOFRAMEWORK(Carbon)
       -#undef Boolean
       -#undef Rect
       -#undef EventMask
       -#undef Point
       -#undef Cursor
       -#endif
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -#include <mouse.h>
       -#include <cursor.h>
       -#include <keyboard.h>
       -#include "x11-memdraw.h"
       -#include "x11-keysym2ucs.h"
       -#undef time
       -
       -static KeySym
       -__xtoplan9kbd(XEvent *e)
       -{
       -        KeySym k;
       -
       -        if(e->xany.type != KeyPress)
       -                return -1;
       -        needstack(64*1024);        /* X has some *huge* buffers in openobject */
       -                /* and they're even bigger on SuSE */
       -        XLookupString((XKeyEvent*)e,NULL,0,&k,NULL);
       -        if(k == XK_Multi_key || k == NoSymbol)
       -                return -1;
       -
       -        if(k&0xFF00){
       -                switch(k){
       -                case XK_BackSpace:
       -                case XK_Tab:
       -                case XK_Escape:
       -                case XK_Delete:
       -                case XK_KP_0:
       -                case XK_KP_1:
       -                case XK_KP_2:
       -                case XK_KP_3:
       -                case XK_KP_4:
       -                case XK_KP_5:
       -                case XK_KP_6:
       -                case XK_KP_7:
       -                case XK_KP_8:
       -                case XK_KP_9:
       -                case XK_KP_Divide:
       -                case XK_KP_Multiply:
       -                case XK_KP_Subtract:
       -                case XK_KP_Add:
       -                case XK_KP_Decimal:
       -                        k &= 0x7F;
       -                        break;
       -                case XK_Linefeed:
       -                        k = '\r';
       -                        break;
       -                case XK_KP_Space:
       -                        k = ' ';
       -                        break;
       -                case XK_Home:
       -                case XK_KP_Home:
       -                        k = Khome;
       -                        break;
       -                case XK_Left:
       -                case XK_KP_Left:
       -                        k = Kleft;
       -                        break;
       -                case XK_Up:
       -                case XK_KP_Up:
       -                        k = Kup;
       -                        break;
       -                case XK_Down:
       -                case XK_KP_Down:
       -                        k = Kdown;
       -                        break;
       -                case XK_Right:
       -                case XK_KP_Right:
       -                        k = Kright;
       -                        break;
       -                case XK_Page_Down:
       -                case XK_KP_Page_Down:
       -                        k = Kpgdown;
       -                        break;
       -                case XK_End:
       -                case XK_KP_End:
       -                        k = Kend;
       -                        break;
       -                case XK_Page_Up:        
       -                case XK_KP_Page_Up:
       -                        k = Kpgup;
       -                        break;
       -                case XK_Insert:
       -                case XK_KP_Insert:
       -                        k = Kins;
       -                        break;
       -                case XK_KP_Enter:
       -                case XK_Return:
       -                        k = '\n';
       -                        break;
       -                case XK_Alt_L:
       -                case XK_Meta_L:        /* Shift Alt on PCs */
       -                case XK_Alt_R:
       -                case XK_Meta_R:        /* Shift Alt on PCs */
       -                        k = Kalt;
       -                        break;
       -                default:                /* not ISO-1 or tty control */
       -                        if(k>0xff) {
       -                                k = _p9keysym2ucs(k);
       -                                if(k==-1) return -1;
       -                        }
       -                }
       -        }
       -
       -        /* Compensate for servers that call a minus a hyphen */
       -        if(k == XK_hyphen)
       -                k = XK_minus;
       -        /* Do control mapping ourselves if translator doesn't */
       -        if(e->xkey.state&ControlMask)
       -                k &= 0x9f;
       -        if(k == NoSymbol) {
       -                return -1;
       -        }
       -
       -        return k+0;
       -}
       -
       -static Rune*
       -xtoplan9latin1(XEvent *e)
       -{
       -        static Rune k[10];
       -        static int alting, nk;
       -        int n;
       -        int r;
       -
       -        r = __xtoplan9kbd(e);
       -        if(r < 0)
       -                return nil;
       -        if(alting){
       -                /*
       -                 * Kludge for Mac's X11 3-button emulation.
       -                 * It treats Command+Button as button 3, but also
       -                 * ends up sending XK_Meta_L twice.
       -                 */
       -                if(r == Kalt){
       -                        alting = 0;
       -                        return nil;
       -                }
       -                k[nk++] = r;
       -                n = _latin1(k, nk);
       -                if(n > 0){
       -                        alting = 0;
       -                        k[0] = n;
       -                        k[1] = 0;
       -                        return k;
       -                }
       -                if(n == -1){
       -                        alting = 0;
       -                        k[nk] = 0;
       -                        return k;
       -                }
       -                /* n < -1, need more input */
       -                return nil;
       -        }else if(r == Kalt){
       -                alting = 1;
       -                nk = 0;
       -                return nil;
       -        }else{
       -                k[0] = r;
       -                k[1] = 0;
       -                return k;
       -        }
       -}
       -
       -int
       -_xtoplan9kbd(XEvent *e)
       -{
       -        static Rune *r;
       -
       -        if(e == (XEvent*)-1){
       -                assert(r);
       -                r--;
       -                return 0;
       -        }
       -        if(e)
       -                r = xtoplan9latin1(e);
       -        if(r && *r)
       -                return *r++;
       -        return -1;
       -}
       -
       -int
       -_xtoplan9mouse(XDisplay *xd, XEvent *e, Mouse *m)
       -{
       -        int s;
       -        XButtonEvent *be;
       -        XMotionEvent *me;
       -
       -        if(_x.putsnarf != _x.assertsnarf){
       -                _x.assertsnarf = _x.putsnarf;
       -                XSetSelectionOwner(_x.mousecon, XA_PRIMARY, _x.drawable, CurrentTime);
       -                if(_x.clipboard != None)
       -                        XSetSelectionOwner(_x.mousecon, _x.clipboard, _x.drawable, CurrentTime);
       -                XFlush(xd);
       -        }
       -
       -        switch(e->type){
       -        case ButtonPress:
       -                be = (XButtonEvent*)e;
       -                /* 
       -                 * Fake message, just sent to make us announce snarf.
       -                 * Apparently state and button are 16 and 8 bits on
       -                 * the wire, since they are truncated by the time they
       -                 * get to us.
       -                 */
       -                if(be->send_event
       -                && (~be->state&0xFFFF)==0
       -                && (~be->button&0xFF)==0)
       -                        return -1;
       -                /* BUG? on mac need to inherit these from elsewhere? */
       -                m->xy.x = be->x;
       -                m->xy.y = be->y;
       -                s = be->state;
       -                m->msec = be->time;
       -                switch(be->button){
       -                case 1:
       -                        s |= Button1Mask;
       -                        break;
       -                case 2:
       -                        s |= Button2Mask;
       -                        break;
       -                case 3:
       -                        s |= Button3Mask;
       -                        break;
       -                case 4:
       -                        s |= Button4Mask;
       -                        break;
       -                case 5:
       -                        s |= Button5Mask;
       -                        break;
       -                }
       -                break;
       -        case ButtonRelease:
       -                be = (XButtonEvent*)e;
       -                m->xy.x = be->x;
       -                m->xy.y = be->y;
       -                s = be->state;
       -                m->msec = be->time;
       -                switch(be->button){
       -                case 1:
       -                        s &= ~Button1Mask;
       -                        break;
       -                case 2:
       -                        s &= ~Button2Mask;
       -                        break;
       -                case 3:
       -                        s &= ~Button3Mask;
       -                        break;
       -                case 4:
       -                        s &= ~Button4Mask;
       -                        break;
       -                case 5:
       -                        s &= ~Button5Mask;
       -                        break;
       -                }
       -                break;
       -
       -        case MotionNotify:
       -                me = (XMotionEvent*)e;
       -                s = me->state;
       -                m->xy.x = me->x;
       -                m->xy.y = me->y;
       -                m->msec = me->time;
       -                break;
       -
       -        default:
       -                return -1;
       -        }
       -
       -        m->buttons = 0;
       -        if(s & Button1Mask)
       -                m->buttons |= 1;
       -        if(s & Button2Mask)
       -                m->buttons |= 2;
       -        if(s & Button3Mask)
       -                m->buttons |= 4;
       -        if(s & Button4Mask)
       -                m->buttons |= 8;
       -        if(s & Button5Mask)
       -                m->buttons |= 16;
       -        return 0;
       -}
       -
       -void
       -_xmoveto(Point p)
       -{
       -        XWarpPointer(_x.display, None, _x.drawable, 0, 0, 0, 0, p.x, p.y);
       -        XFlush(_x.display);
       -}
       -
       -static int
       -revbyte(int b)
       -{
       -        int r;
       -
       -        r = 0;
       -        r |= (b&0x01) << 7;
       -        r |= (b&0x02) << 5;
       -        r |= (b&0x04) << 3;
       -        r |= (b&0x08) << 1;
       -        r |= (b&0x10) >> 1;
       -        r |= (b&0x20) >> 3;
       -        r |= (b&0x40) >> 5;
       -        r |= (b&0x80) >> 7;
       -        return r;
       -}
       -
       -static void
       -xcursorarrow(void)
       -{
       -        if(_x.cursor != 0){
       -                XFreeCursor(_x.display, _x.cursor);
       -                _x.cursor = 0;
       -        }
       -        XUndefineCursor(_x.display, _x.drawable);
       -        XFlush(_x.display);
       -}
       -
       -
       -void
       -_xsetcursor(Cursor *c)
       -{
       -        XColor fg, bg;
       -        XCursor xc;
       -        Pixmap xsrc, xmask;
       -        int i;
       -        uchar src[2*16], mask[2*16];
       -
       -        if(c == nil){
       -                xcursorarrow();
       -                return;
       -        }
       -        for(i=0; i<2*16; i++){
       -                src[i] = revbyte(c->set[i]);
       -                mask[i] = revbyte(c->set[i] | c->clr[i]);
       -        }
       -
       -        fg = _x.map[0];
       -        bg = _x.map[255];
       -        xsrc = XCreateBitmapFromData(_x.display, _x.drawable, (char*)src, 16, 16);
       -        xmask = XCreateBitmapFromData(_x.display, _x.drawable, (char*)mask, 16, 16);
       -        xc = XCreatePixmapCursor(_x.display, xsrc, xmask, &fg, &bg, -c->offset.x, -c->offset.y);
       -        if(xc != 0) {
       -                XDefineCursor(_x.display, _x.drawable, xc);
       -                if(_x.cursor != 0)
       -                        XFreeCursor(_x.display, _x.cursor);
       -                _x.cursor = xc;
       -        }
       -        XFreePixmap(_x.display, xsrc);
       -        XFreePixmap(_x.display, xmask);
       -        XFlush(_x.display);
       -}
       -
       -struct {
       -        QLock lk;
       -        char buf[SnarfSize];
       -#ifdef APPLESNARF
       -        Rune rbuf[SnarfSize];
       -        PasteboardRef apple;
       -#endif
       -} clip;
       -
       -char*
       -_xgetsnarf(XDisplay *xd)
       -{
       -        uchar *data, *xdata;
       -        Atom clipboard, type, prop;
       -        ulong len, lastlen, dummy;
       -        int fmt, i;
       -        XWindow w;
       -
       -        qlock(&clip.lk);
       -        /*
       -         * Have we snarfed recently and the X server hasn't caught up?
       -         */
       -        if(_x.putsnarf != _x.assertsnarf)
       -                goto mine;
       -
       -        /*
       -         * Is there a primary selection (highlighted text in an xterm)?
       -         */
       -        clipboard = XA_PRIMARY;
       -        w = XGetSelectionOwner(xd, XA_PRIMARY);
       -        if(w == _x.drawable){
       -        mine:
       -                data = (uchar*)strdup(clip.buf);
       -                goto out;
       -        }
       -
       -        /*
       -         * If not, is there a clipboard selection?
       -         */
       -        if(w == None && _x.clipboard != None){
       -                clipboard = _x.clipboard;
       -                w = XGetSelectionOwner(xd, _x.clipboard);
       -                if(w == _x.drawable)
       -                        goto mine;
       -        }
       -
       -        /*
       -         * If not, give up.
       -         */
       -        if(w == None){
       -                data = nil;
       -                goto out;
       -        }
       -                
       -        /*
       -         * We should be waiting for SelectionNotify here, but it might never
       -         * come, and we have no way to time out.  Instead, we will clear
       -         * local property #1, request our buddy to fill it in for us, and poll
       -         * until he's done or we get tired of waiting.
       -         *
       -         * We should try to go for _x.utf8string instead of XA_STRING,
       -         * but that would add to the polling.
       -         */
       -        prop = 1;
       -        XChangeProperty(xd, _x.drawable, prop, XA_STRING, 8, PropModeReplace, (uchar*)"", 0);
       -        XConvertSelection(xd, clipboard, XA_STRING, prop, _x.drawable, CurrentTime);
       -        XFlush(xd);
       -        lastlen = 0;
       -        for(i=0; i<10 || (lastlen!=0 && i<30); i++){
       -                usleep(100*1000);
       -                XGetWindowProperty(xd, _x.drawable, prop, 0, 0, 0, AnyPropertyType,
       -                        &type, &fmt, &dummy, &len, &data);
       -                if(lastlen == len && len > 0)
       -                        break;
       -                lastlen = len;
       -        }
       -        if(i == 10){
       -                data = nil;
       -                goto out;
       -        }
       -        /* get the property */
       -        data = nil;
       -        XGetWindowProperty(xd, _x.drawable, prop, 0, SnarfSize/sizeof(ulong), 0, 
       -                AnyPropertyType, &type, &fmt, &len, &dummy, &xdata);
       -        if((type != XA_STRING && type != _x.utf8string) || len == 0){
       -                if(xdata)
       -                        XFree(xdata);
       -                data = nil;
       -        }else{
       -                if(xdata){
       -                        data = (uchar*)strdup((char*)xdata);
       -                        XFree(xdata);
       -                }else
       -                        data = nil;
       -        }
       -out:
       -        qunlock(&clip.lk);
       -        return (char*)data;
       -}
       -
       -void
       -_xputsnarf(XDisplay *xd, char *data)
       -{
       -        XButtonEvent e;
       -
       -        if(strlen(data) >= SnarfSize)
       -                return;
       -        qlock(&clip.lk);
       -        strcpy(clip.buf, data);
       -        /* leave note for mouse proc to assert selection ownership */
       -        _x.putsnarf++;
       -
       -        /* send mouse a fake event so snarf is announced */
       -        memset(&e, 0, sizeof e);
       -        e.type = ButtonPress;
       -        e.window = _x.drawable;
       -        e.state = ~0;
       -        e.button = ~0;
       -        XSendEvent(xd, _x.drawable, True, ButtonPressMask, (XEvent*)&e);
       -        XFlush(xd);
       -        qunlock(&clip.lk);
       -}
       -
       -int
       -_xselect(XEvent *e, XDisplay *xd)
       -{
       -        char *name;
       -        XEvent r;
       -        XSelectionRequestEvent *xe;
       -        Atom a[4];
       -
       -        memset(&r, 0, sizeof r);
       -        xe = (XSelectionRequestEvent*)e;
       -if(0) fprint(2, "xselect target=%d requestor=%d property=%d selection=%d\n",
       -        xe->target, xe->requestor, xe->property, xe->selection);
       -        r.xselection.property = xe->property;
       -        if(xe->target == _x.targets){
       -                a[0] = XA_STRING;
       -                a[1] = _x.utf8string;
       -                a[2] = _x.text;
       -                a[3] = _x.compoundtext;
       -
       -                XChangeProperty(xd, xe->requestor, xe->property, xe->target,
       -                        8, PropModeReplace, (uchar*)a, sizeof a);
       -        }else if(xe->target == XA_STRING 
       -        || xe->target == _x.utf8string 
       -        || xe->target == _x.text 
       -        || xe->target == _x.compoundtext
       -        || ((name = XGetAtomName(xd, xe->target)) && strcmp(name, "text/plain;charset=UTF-8") == 0)){
       -                /* text/plain;charset=UTF-8 seems nonstandard but is used by Synergy */
       -                /* if the target is STRING we're supposed to reply with Latin1 XXX */
       -                qlock(&clip.lk);
       -                XChangeProperty(xd, xe->requestor, xe->property, xe->target,
       -                        8, PropModeReplace, (uchar*)clip.buf, strlen(clip.buf));
       -                qunlock(&clip.lk);
       -        }else{
       -                if(strcmp(name, "TIMESTAMP") != 0)
       -                        fprint(2, "%s: cannot handle selection request for '%s' (%d)\n", argv0, name, (int)xe->target);
       -                r.xselection.property = None;
       -        }
       -
       -        r.xselection.display = xe->display;
       -        /* r.xselection.property filled above */
       -        r.xselection.target = xe->target;
       -        r.xselection.type = SelectionNotify;
       -        r.xselection.requestor = xe->requestor;
       -        r.xselection.time = xe->time;
       -        r.xselection.send_event = True;
       -        r.xselection.selection = xe->selection;
       -        XSendEvent(xd, xe->requestor, False, 0, &r);
       -        XFlush(xd);
       -        return 0;
       -}
       -
       -#ifdef APPLESNARF
       -char*
       -applegetsnarf(void)
       -{
       -        char *s, *t;
       -        CFArrayRef flavors;
       -        CFDataRef data;
       -        CFIndex nflavor, ndata, j;
       -        CFStringRef type;
       -        ItemCount nitem;
       -        PasteboardItemID id;
       -        PasteboardSyncFlags flags;
       -        UInt32 i;
       -
       -/*        fprint(2, "applegetsnarf\n"); */
       -        qlock(&clip.lk);
       -        if(clip.apple == nil){
       -                if(PasteboardCreate(kPasteboardClipboard, &clip.apple) != noErr){
       -                        fprint(2, "apple pasteboard create failed\n");
       -                        qunlock(&clip.lk);
       -                        return nil;
       -                }
       -        }
       -        flags = PasteboardSynchronize(clip.apple);
       -        if(flags&kPasteboardClientIsOwner){
       -                s = strdup(clip.buf);
       -                qunlock(&clip.lk);
       -                return s;
       -        }
       -        if(PasteboardGetItemCount(clip.apple, &nitem) != noErr){
       -                fprint(2, "apple pasteboard get item count failed\n");
       -                qunlock(&clip.lk);
       -                return nil;
       -        }
       -        for(i=1; i<=nitem; i++){
       -                if(PasteboardGetItemIdentifier(clip.apple, i, &id) != noErr)
       -                        continue;
       -                if(PasteboardCopyItemFlavors(clip.apple, id, &flavors) != noErr)
       -                        continue;
       -                nflavor = CFArrayGetCount(flavors);
       -                for(j=0; j<nflavor; j++){
       -                        type = (CFStringRef)CFArrayGetValueAtIndex(flavors, j);
       -                        if(!UTTypeConformsTo(type, CFSTR("public.utf16-plain-text")))
       -                                continue;
       -                        if(PasteboardCopyItemFlavorData(clip.apple, id, type, &data) != noErr)
       -                                continue;
       -                        ndata = CFDataGetLength(data);
       -                        qunlock(&clip.lk);
       -                        s = smprint("%.*S", ndata/2, (Rune*)CFDataGetBytePtr(data));
       -                        CFRelease(flavors);
       -                        CFRelease(data);
       -                        for(t=s; *t; t++)
       -                                if(*t == '\r')
       -                                        *t = '\n';
       -                        return s;
       -                }
       -                CFRelease(flavors);
       -        }
       -        qunlock(&clip.lk);
       -        return nil;                
       -}
       -
       -void
       -appleputsnarf(char *s)
       -{
       -        CFDataRef cfdata;
       -        PasteboardSyncFlags flags;
       -
       -/*        fprint(2, "appleputsnarf\n"); */
       -
       -        if(strlen(s) >= SnarfSize)
       -                return;
       -        qlock(&clip.lk);
       -        strcpy(clip.buf, s);
       -        runesnprint(clip.rbuf, nelem(clip.rbuf), "%s", s);
       -        if(clip.apple == nil){
       -                if(PasteboardCreate(kPasteboardClipboard, &clip.apple) != noErr){
       -                        fprint(2, "apple pasteboard create failed\n");
       -                        qunlock(&clip.lk);
       -                        return;
       -                }
       -        }
       -        if(PasteboardClear(clip.apple) != noErr){
       -                fprint(2, "apple pasteboard clear failed\n");
       -                qunlock(&clip.lk);
       -                return;
       -        }
       -        flags = PasteboardSynchronize(clip.apple);
       -        if((flags&kPasteboardModified) || !(flags&kPasteboardClientIsOwner)){
       -                fprint(2, "apple pasteboard cannot assert ownership\n");
       -                qunlock(&clip.lk);
       -                return;
       -        }
       -        cfdata = CFDataCreate(kCFAllocatorDefault, 
       -                (uchar*)clip.rbuf, runestrlen(clip.rbuf)*2);
       -        if(cfdata == nil){
       -                fprint(2, "apple pasteboard cfdatacreate failed\n");
       -                qunlock(&clip.lk);
       -                return;
       -        }
       -        if(PasteboardPutItemFlavor(clip.apple, (PasteboardItemID)1,
       -                CFSTR("public.utf16-plain-text"), cfdata, 0) != noErr){
       -                fprint(2, "apple pasteboard putitem failed\n");
       -                CFRelease(cfdata);
       -                qunlock(&clip.lk);
       -                return;
       -        }
       -        /* CFRelease(cfdata); ??? */
       -        qunlock(&clip.lk);
       -}
       -#endif        /* APPLESNARF */
       -
       -void
       -putsnarf(char *data)
       -{
       -#ifdef APPLESNARF
       -        appleputsnarf(data);
       -#endif
       -        _xputsnarf(_x.snarfcon, data);
       -}
       -
       -char*
       -getsnarf(void)
       -{
       -        return _xgetsnarf(_x.snarfcon);
       -}
       -
 (DIR) diff --git a/src/libdraw/x11-keyboard.c b/src/libdraw/x11-keyboard.c
       t@@ -1,78 +0,0 @@
       -#include <u.h>
       -#include "x11-inc.h"
       -#include <libc.h>
       -#include <draw.h>
       -#include <thread.h>
       -#include <memdraw.h>
       -#include <keyboard.h>
       -#include "x11-memdraw.h"
       -
       -void
       -closekeyboard(Keyboardctl *kc)
       -{
       -        if(kc == nil)
       -                return;
       -
       -/*        postnote(PNPROC, kc->pid, "kill");
       -*/
       -
       -#ifdef BUG
       -        /* Drain the channel */
       -        while(?kc->c)
       -                <-kc->c;
       -#endif
       -
       -        close(kc->ctlfd);
       -        close(kc->consfd);
       -        free(kc->file);
       -        free(kc->c);
       -        free(kc);
       -}
       -
       -static
       -void
       -_ioproc(void *arg)
       -{
       -        int i;
       -        int fd;
       -        Keyboardctl *kc;
       -        Rune r;
       -        XEvent xevent;
       -
       -        kc = arg;
       -        threadsetname("kbdproc");
       -        kc->pid = getpid();
       -        fd = XConnectionNumber(_x.kbdcon);
       -        XSelectInput(_x.kbdcon, _x.drawable, KeyPressMask);
       -        for(;;){
       -                XWindowEvent(_x.kbdcon, _x.drawable, KeyPressMask, &xevent);
       -                switch(xevent.type){
       -                case KeyPress:
       -                        i = _xtoplan9kbd(&xevent);
       -                        if(i == -1)
       -                                continue;
       -                        r = i;
       -                        send(kc->c, &r);
       -                        while((i=_xtoplan9kbd(nil)) >= 0){
       -                                r = i;
       -                                send(kc->c, &r);
       -                        }
       -                        break;
       -                }
       -        }
       -}
       -
       -Keyboardctl*
       -initkeyboard(char *file)
       -{
       -        Keyboardctl *kc;
       -
       -        kc = mallocz(sizeof(Keyboardctl), 1);
       -        if(kc == nil)
       -                return nil;
       -        kc->c = chancreate(sizeof(Rune), 20);
       -        chansetname(kc->c, "kbdc");
       -        proccreate(_ioproc, kc, 256*1024);
       -        return kc;
       -}
       -
 (DIR) diff --git a/src/libdraw/x11-keysym2ucs.c b/src/libdraw/x11-keysym2ucs.c
       t@@ -1,857 +0,0 @@
       -/* $XFree86: xc/programs/xterm/keysym2ucs.c,v 1.5 2001/06/18 19:09:26 dickey Exp $
       - * This module converts keysym values into the corresponding ISO 10646
       - * (UCS, Unicode) values.
       - *
       - * The array keysymtab[] contains pairs of X11 keysym values for graphical
       - * characters and the corresponding Unicode value. The function
       - * keysym2ucs() maps a keysym onto a Unicode value using a binary search,
       - * therefore keysymtab[] must remain SORTED by keysym value.
       - *
       - * The keysym -> UTF-8 conversion will hopefully one day be provided
       - * by Xlib via XmbLookupString() and should ideally not have to be
       - * done in X applications. But we are not there yet.
       - *
       - * We allow to represent any UCS character in the range U-00000000 to
       - * U-00FFFFFF by a keysym value in the range 0x01000000 to 0x01ffffff.
       - * This admittedly does not cover the entire 31-bit space of UCS, but
       - * it does cover all of the characters up to U-10FFFF, which can be
       - * represented by UTF-16, and more, and it is very unlikely that higher
       - * UCS codes will ever be assigned by ISO. So to get Unicode character
       - * U+ABCD you can directly use keysym 0x0100abcd.
       - *
       - * NOTE: The comments in the table below contain the actual character
       - * encoded in UTF-8, so for viewing and editing best use an editor in
       - * UTF-8 mode.
       - *
       - * Author: Markus G. Kuhn <mkuhn@acm.org>, University of Cambridge, April 2001
       - *
       - * Special thanks to Richard Verhoeven <river@win.tue.nl> for preparing
       - * an initial draft of the mapping table.
       - *
       - * This software is in the public domain. Share and enjoy!
       - *
       - * AUTOMATICALLY GENERATED FILE, DO NOT EDIT !!! (unicode/convmap.pl)
       - */
       -
       -#ifndef KEYSYM2UCS_INCLUDED
       -  
       -#include "x11-keysym2ucs.h"
       -#define VISIBLE /* */
       -
       -#else
       -
       -#define VISIBLE static
       -
       -#endif
       -
       -static struct codepair {
       -  unsigned short keysym;
       -  unsigned short ucs;
       -} keysymtab[] = {
       -  { 0x01a1, 0x0104 }, /*                     Aogonek Ą LATIN CAPITAL LETTER A WITH OGONEK */
       -  { 0x01a2, 0x02d8 }, /*                       breve ˘ BREVE */
       -  { 0x01a3, 0x0141 }, /*                     Lstroke Ł LATIN CAPITAL LETTER L WITH STROKE */
       -  { 0x01a5, 0x013d }, /*                      Lcaron Ľ LATIN CAPITAL LETTER L WITH CARON */
       -  { 0x01a6, 0x015a }, /*                      Sacute Ś LATIN CAPITAL LETTER S WITH ACUTE */
       -  { 0x01a9, 0x0160 }, /*                      Scaron Š LATIN CAPITAL LETTER S WITH CARON */
       -  { 0x01aa, 0x015e }, /*                    Scedilla Ş LATIN CAPITAL LETTER S WITH CEDILLA */
       -  { 0x01ab, 0x0164 }, /*                      Tcaron Ť LATIN CAPITAL LETTER T WITH CARON */
       -  { 0x01ac, 0x0179 }, /*                      Zacute Ź LATIN CAPITAL LETTER Z WITH ACUTE */
       -  { 0x01ae, 0x017d }, /*                      Zcaron Ž LATIN CAPITAL LETTER Z WITH CARON */
       -  { 0x01af, 0x017b }, /*                   Zabovedot Ż LATIN CAPITAL LETTER Z WITH DOT ABOVE */
       -  { 0x01b1, 0x0105 }, /*                     aogonek ą LATIN SMALL LETTER A WITH OGONEK */
       -  { 0x01b2, 0x02db }, /*                      ogonek ˛ OGONEK */
       -  { 0x01b3, 0x0142 }, /*                     lstroke ł LATIN SMALL LETTER L WITH STROKE */
       -  { 0x01b5, 0x013e }, /*                      lcaron ľ LATIN SMALL LETTER L WITH CARON */
       -  { 0x01b6, 0x015b }, /*                      sacute ś LATIN SMALL LETTER S WITH ACUTE */
       -  { 0x01b7, 0x02c7 }, /*                       caron ˇ CARON */
       -  { 0x01b9, 0x0161 }, /*                      scaron š LATIN SMALL LETTER S WITH CARON */
       -  { 0x01ba, 0x015f }, /*                    scedilla ş LATIN SMALL LETTER S WITH CEDILLA */
       -  { 0x01bb, 0x0165 }, /*                      tcaron ť LATIN SMALL LETTER T WITH CARON */
       -  { 0x01bc, 0x017a }, /*                      zacute ź LATIN SMALL LETTER Z WITH ACUTE */
       -  { 0x01bd, 0x02dd }, /*                 doubleacute ˝ DOUBLE ACUTE ACCENT */
       -  { 0x01be, 0x017e }, /*                      zcaron ž LATIN SMALL LETTER Z WITH CARON */
       -  { 0x01bf, 0x017c }, /*                   zabovedot ż LATIN SMALL LETTER Z WITH DOT ABOVE */
       -  { 0x01c0, 0x0154 }, /*                      Racute Ŕ LATIN CAPITAL LETTER R WITH ACUTE */
       -  { 0x01c3, 0x0102 }, /*                      Abreve Ă LATIN CAPITAL LETTER A WITH BREVE */
       -  { 0x01c5, 0x0139 }, /*                      Lacute Ĺ LATIN CAPITAL LETTER L WITH ACUTE */
       -  { 0x01c6, 0x0106 }, /*                      Cacute Ć LATIN CAPITAL LETTER C WITH ACUTE */
       -  { 0x01c8, 0x010c }, /*                      Ccaron Č LATIN CAPITAL LETTER C WITH CARON */
       -  { 0x01ca, 0x0118 }, /*                     Eogonek Ę LATIN CAPITAL LETTER E WITH OGONEK */
       -  { 0x01cc, 0x011a }, /*                      Ecaron Ě LATIN CAPITAL LETTER E WITH CARON */
       -  { 0x01cf, 0x010e }, /*                      Dcaron Ď LATIN CAPITAL LETTER D WITH CARON */
       -  { 0x01d0, 0x0110 }, /*                     Dstroke Đ LATIN CAPITAL LETTER D WITH STROKE */
       -  { 0x01d1, 0x0143 }, /*                      Nacute Ń LATIN CAPITAL LETTER N WITH ACUTE */
       -  { 0x01d2, 0x0147 }, /*                      Ncaron Ň LATIN CAPITAL LETTER N WITH CARON */
       -  { 0x01d5, 0x0150 }, /*                Odoubleacute Ő LATIN CAPITAL LETTER O WITH DOUBLE ACUTE */
       -  { 0x01d8, 0x0158 }, /*                      Rcaron Ř LATIN CAPITAL LETTER R WITH CARON */
       -  { 0x01d9, 0x016e }, /*                       Uring Ů LATIN CAPITAL LETTER U WITH RING ABOVE */
       -  { 0x01db, 0x0170 }, /*                Udoubleacute Ű LATIN CAPITAL LETTER U WITH DOUBLE ACUTE */
       -  { 0x01de, 0x0162 }, /*                    Tcedilla Ţ LATIN CAPITAL LETTER T WITH CEDILLA */
       -  { 0x01e0, 0x0155 }, /*                      racute ŕ LATIN SMALL LETTER R WITH ACUTE */
       -  { 0x01e3, 0x0103 }, /*                      abreve ă LATIN SMALL LETTER A WITH BREVE */
       -  { 0x01e5, 0x013a }, /*                      lacute ĺ LATIN SMALL LETTER L WITH ACUTE */
       -  { 0x01e6, 0x0107 }, /*                      cacute ć LATIN SMALL LETTER C WITH ACUTE */
       -  { 0x01e8, 0x010d }, /*                      ccaron č LATIN SMALL LETTER C WITH CARON */
       -  { 0x01ea, 0x0119 }, /*                     eogonek ę LATIN SMALL LETTER E WITH OGONEK */
       -  { 0x01ec, 0x011b }, /*                      ecaron ě LATIN SMALL LETTER E WITH CARON */
       -  { 0x01ef, 0x010f }, /*                      dcaron ď LATIN SMALL LETTER D WITH CARON */
       -  { 0x01f0, 0x0111 }, /*                     dstroke đ LATIN SMALL LETTER D WITH STROKE */
       -  { 0x01f1, 0x0144 }, /*                      nacute ń LATIN SMALL LETTER N WITH ACUTE */
       -  { 0x01f2, 0x0148 }, /*                      ncaron ň LATIN SMALL LETTER N WITH CARON */
       -  { 0x01f5, 0x0151 }, /*                odoubleacute ő LATIN SMALL LETTER O WITH DOUBLE ACUTE */
       -  { 0x01f8, 0x0159 }, /*                      rcaron ř LATIN SMALL LETTER R WITH CARON */
       -  { 0x01f9, 0x016f }, /*                       uring ů LATIN SMALL LETTER U WITH RING ABOVE */
       -  { 0x01fb, 0x0171 }, /*                udoubleacute ű LATIN SMALL LETTER U WITH DOUBLE ACUTE */
       -  { 0x01fe, 0x0163 }, /*                    tcedilla ţ LATIN SMALL LETTER T WITH CEDILLA */
       -  { 0x01ff, 0x02d9 }, /*                    abovedot ˙ DOT ABOVE */
       -  { 0x02a1, 0x0126 }, /*                     Hstroke Ħ LATIN CAPITAL LETTER H WITH STROKE */
       -  { 0x02a6, 0x0124 }, /*                 Hcircumflex Ĥ LATIN CAPITAL LETTER H WITH CIRCUMFLEX */
       -  { 0x02a9, 0x0130 }, /*                   Iabovedot İ LATIN CAPITAL LETTER I WITH DOT ABOVE */
       -  { 0x02ab, 0x011e }, /*                      Gbreve Ğ LATIN CAPITAL LETTER G WITH BREVE */
       -  { 0x02ac, 0x0134 }, /*                 Jcircumflex Ĵ LATIN CAPITAL LETTER J WITH CIRCUMFLEX */
       -  { 0x02b1, 0x0127 }, /*                     hstroke ħ LATIN SMALL LETTER H WITH STROKE */
       -  { 0x02b6, 0x0125 }, /*                 hcircumflex ĥ LATIN SMALL LETTER H WITH CIRCUMFLEX */
       -  { 0x02b9, 0x0131 }, /*                    idotless ı LATIN SMALL LETTER DOTLESS I */
       -  { 0x02bb, 0x011f }, /*                      gbreve ğ LATIN SMALL LETTER G WITH BREVE */
       -  { 0x02bc, 0x0135 }, /*                 jcircumflex ĵ LATIN SMALL LETTER J WITH CIRCUMFLEX */
       -  { 0x02c5, 0x010a }, /*                   Cabovedot Ċ LATIN CAPITAL LETTER C WITH DOT ABOVE */
       -  { 0x02c6, 0x0108 }, /*                 Ccircumflex Ĉ LATIN CAPITAL LETTER C WITH CIRCUMFLEX */
       -  { 0x02d5, 0x0120 }, /*                   Gabovedot Ġ LATIN CAPITAL LETTER G WITH DOT ABOVE */
       -  { 0x02d8, 0x011c }, /*                 Gcircumflex Ĝ LATIN CAPITAL LETTER G WITH CIRCUMFLEX */
       -  { 0x02dd, 0x016c }, /*                      Ubreve Ŭ LATIN CAPITAL LETTER U WITH BREVE */
       -  { 0x02de, 0x015c }, /*                 Scircumflex Ŝ LATIN CAPITAL LETTER S WITH CIRCUMFLEX */
       -  { 0x02e5, 0x010b }, /*                   cabovedot ċ LATIN SMALL LETTER C WITH DOT ABOVE */
       -  { 0x02e6, 0x0109 }, /*                 ccircumflex ĉ LATIN SMALL LETTER C WITH CIRCUMFLEX */
       -  { 0x02f5, 0x0121 }, /*                   gabovedot ġ LATIN SMALL LETTER G WITH DOT ABOVE */
       -  { 0x02f8, 0x011d }, /*                 gcircumflex ĝ LATIN SMALL LETTER G WITH CIRCUMFLEX */
       -  { 0x02fd, 0x016d }, /*                      ubreve ŭ LATIN SMALL LETTER U WITH BREVE */
       -  { 0x02fe, 0x015d }, /*                 scircumflex ŝ LATIN SMALL LETTER S WITH CIRCUMFLEX */
       -  { 0x03a2, 0x0138 }, /*                         kra ĸ LATIN SMALL LETTER KRA */
       -  { 0x03a3, 0x0156 }, /*                    Rcedilla Ŗ LATIN CAPITAL LETTER R WITH CEDILLA */
       -  { 0x03a5, 0x0128 }, /*                      Itilde Ĩ LATIN CAPITAL LETTER I WITH TILDE */
       -  { 0x03a6, 0x013b }, /*                    Lcedilla Ļ LATIN CAPITAL LETTER L WITH CEDILLA */
       -  { 0x03aa, 0x0112 }, /*                     Emacron Ē LATIN CAPITAL LETTER E WITH MACRON */
       -  { 0x03ab, 0x0122 }, /*                    Gcedilla Ģ LATIN CAPITAL LETTER G WITH CEDILLA */
       -  { 0x03ac, 0x0166 }, /*                      Tslash Ŧ LATIN CAPITAL LETTER T WITH STROKE */
       -  { 0x03b3, 0x0157 }, /*                    rcedilla ŗ LATIN SMALL LETTER R WITH CEDILLA */
       -  { 0x03b5, 0x0129 }, /*                      itilde ĩ LATIN SMALL LETTER I WITH TILDE */
       -  { 0x03b6, 0x013c }, /*                    lcedilla ļ LATIN SMALL LETTER L WITH CEDILLA */
       -  { 0x03ba, 0x0113 }, /*                     emacron ē LATIN SMALL LETTER E WITH MACRON */
       -  { 0x03bb, 0x0123 }, /*                    gcedilla ģ LATIN SMALL LETTER G WITH CEDILLA */
       -  { 0x03bc, 0x0167 }, /*                      tslash ŧ LATIN SMALL LETTER T WITH STROKE */
       -  { 0x03bd, 0x014a }, /*                         ENG Ŋ LATIN CAPITAL LETTER ENG */
       -  { 0x03bf, 0x014b }, /*                         eng ŋ LATIN SMALL LETTER ENG */
       -  { 0x03c0, 0x0100 }, /*                     Amacron Ā LATIN CAPITAL LETTER A WITH MACRON */
       -  { 0x03c7, 0x012e }, /*                     Iogonek Į LATIN CAPITAL LETTER I WITH OGONEK */
       -  { 0x03cc, 0x0116 }, /*                   Eabovedot Ė LATIN CAPITAL LETTER E WITH DOT ABOVE */
       -  { 0x03cf, 0x012a }, /*                     Imacron Ī LATIN CAPITAL LETTER I WITH MACRON */
       -  { 0x03d1, 0x0145 }, /*                    Ncedilla Ņ LATIN CAPITAL LETTER N WITH CEDILLA */
       -  { 0x03d2, 0x014c }, /*                     Omacron Ō LATIN CAPITAL LETTER O WITH MACRON */
       -  { 0x03d3, 0x0136 }, /*                    Kcedilla Ķ LATIN CAPITAL LETTER K WITH CEDILLA */
       -  { 0x03d9, 0x0172 }, /*                     Uogonek Ų LATIN CAPITAL LETTER U WITH OGONEK */
       -  { 0x03dd, 0x0168 }, /*                      Utilde Ũ LATIN CAPITAL LETTER U WITH TILDE */
       -  { 0x03de, 0x016a }, /*                     Umacron Ū LATIN CAPITAL LETTER U WITH MACRON */
       -  { 0x03e0, 0x0101 }, /*                     amacron ā LATIN SMALL LETTER A WITH MACRON */
       -  { 0x03e7, 0x012f }, /*                     iogonek į LATIN SMALL LETTER I WITH OGONEK */
       -  { 0x03ec, 0x0117 }, /*                   eabovedot ė LATIN SMALL LETTER E WITH DOT ABOVE */
       -  { 0x03ef, 0x012b }, /*                     imacron ī LATIN SMALL LETTER I WITH MACRON */
       -  { 0x03f1, 0x0146 }, /*                    ncedilla ņ LATIN SMALL LETTER N WITH CEDILLA */
       -  { 0x03f2, 0x014d }, /*                     omacron ō LATIN SMALL LETTER O WITH MACRON */
       -  { 0x03f3, 0x0137 }, /*                    kcedilla ķ LATIN SMALL LETTER K WITH CEDILLA */
       -  { 0x03f9, 0x0173 }, /*                     uogonek ų LATIN SMALL LETTER U WITH OGONEK */
       -  { 0x03fd, 0x0169 }, /*                      utilde ũ LATIN SMALL LETTER U WITH TILDE */
       -  { 0x03fe, 0x016b }, /*                     umacron ū LATIN SMALL LETTER U WITH MACRON */
       -  { 0x047e, 0x203e }, /*                    overline ‾ OVERLINE */
       -  { 0x04a1, 0x3002 }, /*               kana_fullstop 。 IDEOGRAPHIC FULL STOP */
       -  { 0x04a2, 0x300c }, /*         kana_openingbracket 「 LEFT CORNER BRACKET */
       -  { 0x04a3, 0x300d }, /*         kana_closingbracket 」 RIGHT CORNER BRACKET */
       -  { 0x04a4, 0x3001 }, /*                  kana_comma 、 IDEOGRAPHIC COMMA */
       -  { 0x04a5, 0x30fb }, /*            kana_conjunctive ・ KATAKANA MIDDLE DOT */
       -  { 0x04a6, 0x30f2 }, /*                     kana_WO ヲ KATAKANA LETTER WO */
       -  { 0x04a7, 0x30a1 }, /*                      kana_a ァ KATAKANA LETTER SMALL A */
       -  { 0x04a8, 0x30a3 }, /*                      kana_i ィ KATAKANA LETTER SMALL I */
       -  { 0x04a9, 0x30a5 }, /*                      kana_u ゥ KATAKANA LETTER SMALL U */
       -  { 0x04aa, 0x30a7 }, /*                      kana_e ェ KATAKANA LETTER SMALL E */
       -  { 0x04ab, 0x30a9 }, /*                      kana_o ォ KATAKANA LETTER SMALL O */
       -  { 0x04ac, 0x30e3 }, /*                     kana_ya ャ KATAKANA LETTER SMALL YA */
       -  { 0x04ad, 0x30e5 }, /*                     kana_yu ュ KATAKANA LETTER SMALL YU */
       -  { 0x04ae, 0x30e7 }, /*                     kana_yo ョ KATAKANA LETTER SMALL YO */
       -  { 0x04af, 0x30c3 }, /*                    kana_tsu ッ KATAKANA LETTER SMALL TU */
       -  { 0x04b0, 0x30fc }, /*              prolongedsound ー KATAKANA-HIRAGANA PROLONGED SOUND MARK */
       -  { 0x04b1, 0x30a2 }, /*                      kana_A ア KATAKANA LETTER A */
       -  { 0x04b2, 0x30a4 }, /*                      kana_I イ KATAKANA LETTER I */
       -  { 0x04b3, 0x30a6 }, /*                      kana_U ウ KATAKANA LETTER U */
       -  { 0x04b4, 0x30a8 }, /*                      kana_E エ KATAKANA LETTER E */
       -  { 0x04b5, 0x30aa }, /*                      kana_O オ KATAKANA LETTER O */
       -  { 0x04b6, 0x30ab }, /*                     kana_KA カ KATAKANA LETTER KA */
       -  { 0x04b7, 0x30ad }, /*                     kana_KI キ KATAKANA LETTER KI */
       -  { 0x04b8, 0x30af }, /*                     kana_KU ク KATAKANA LETTER KU */
       -  { 0x04b9, 0x30b1 }, /*                     kana_KE ケ KATAKANA LETTER KE */
       -  { 0x04ba, 0x30b3 }, /*                     kana_KO コ KATAKANA LETTER KO */
       -  { 0x04bb, 0x30b5 }, /*                     kana_SA サ KATAKANA LETTER SA */
       -  { 0x04bc, 0x30b7 }, /*                    kana_SHI シ KATAKANA LETTER SI */
       -  { 0x04bd, 0x30b9 }, /*                     kana_SU ス KATAKANA LETTER SU */
       -  { 0x04be, 0x30bb }, /*                     kana_SE セ KATAKANA LETTER SE */
       -  { 0x04bf, 0x30bd }, /*                     kana_SO ソ KATAKANA LETTER SO */
       -  { 0x04c0, 0x30bf }, /*                     kana_TA タ KATAKANA LETTER TA */
       -  { 0x04c1, 0x30c1 }, /*                    kana_CHI チ KATAKANA LETTER TI */
       -  { 0x04c2, 0x30c4 }, /*                    kana_TSU ツ KATAKANA LETTER TU */
       -  { 0x04c3, 0x30c6 }, /*                     kana_TE テ KATAKANA LETTER TE */
       -  { 0x04c4, 0x30c8 }, /*                     kana_TO ト KATAKANA LETTER TO */
       -  { 0x04c5, 0x30ca }, /*                     kana_NA ナ KATAKANA LETTER NA */
       -  { 0x04c6, 0x30cb }, /*                     kana_NI ニ KATAKANA LETTER NI */
       -  { 0x04c7, 0x30cc }, /*                     kana_NU ヌ KATAKANA LETTER NU */
       -  { 0x04c8, 0x30cd }, /*                     kana_NE ネ KATAKANA LETTER NE */
       -  { 0x04c9, 0x30ce }, /*                     kana_NO ノ KATAKANA LETTER NO */
       -  { 0x04ca, 0x30cf }, /*                     kana_HA ハ KATAKANA LETTER HA */
       -  { 0x04cb, 0x30d2 }, /*                     kana_HI ヒ KATAKANA LETTER HI */
       -  { 0x04cc, 0x30d5 }, /*                     kana_FU フ KATAKANA LETTER HU */
       -  { 0x04cd, 0x30d8 }, /*                     kana_HE ヘ KATAKANA LETTER HE */
       -  { 0x04ce, 0x30db }, /*                     kana_HO ホ KATAKANA LETTER HO */
       -  { 0x04cf, 0x30de }, /*                     kana_MA マ KATAKANA LETTER MA */
       -  { 0x04d0, 0x30df }, /*                     kana_MI ミ KATAKANA LETTER MI */
       -  { 0x04d1, 0x30e0 }, /*                     kana_MU ム KATAKANA LETTER MU */
       -  { 0x04d2, 0x30e1 }, /*                     kana_ME メ KATAKANA LETTER ME */
       -  { 0x04d3, 0x30e2 }, /*                     kana_MO モ KATAKANA LETTER MO */
       -  { 0x04d4, 0x30e4 }, /*                     kana_YA ヤ KATAKANA LETTER YA */
       -  { 0x04d5, 0x30e6 }, /*                     kana_YU ユ KATAKANA LETTER YU */
       -  { 0x04d6, 0x30e8 }, /*                     kana_YO ヨ KATAKANA LETTER YO */
       -  { 0x04d7, 0x30e9 }, /*                     kana_RA ラ KATAKANA LETTER RA */
       -  { 0x04d8, 0x30ea }, /*                     kana_RI リ KATAKANA LETTER RI */
       -  { 0x04d9, 0x30eb }, /*                     kana_RU ル KATAKANA LETTER RU */
       -  { 0x04da, 0x30ec }, /*                     kana_RE レ KATAKANA LETTER RE */
       -  { 0x04db, 0x30ed }, /*                     kana_RO ロ KATAKANA LETTER RO */
       -  { 0x04dc, 0x30ef }, /*                     kana_WA ワ KATAKANA LETTER WA */
       -  { 0x04dd, 0x30f3 }, /*                      kana_N ン KATAKANA LETTER N */
       -  { 0x04de, 0x309b }, /*                 voicedsound ゛ KATAKANA-HIRAGANA VOICED SOUND MARK */
       -  { 0x04df, 0x309c }, /*             semivoicedsound ゜ KATAKANA-HIRAGANA SEMI-VOICED SOUND MARK */
       -  { 0x05ac, 0x060c }, /*                Arabic_comma ، ARABIC COMMA */
       -  { 0x05bb, 0x061b }, /*            Arabic_semicolon ؛ ARABIC SEMICOLON */
       -  { 0x05bf, 0x061f }, /*        Arabic_question_mark ؟ ARABIC QUESTION MARK */
       -  { 0x05c1, 0x0621 }, /*                Arabic_hamza ء ARABIC LETTER HAMZA */
       -  { 0x05c2, 0x0622 }, /*          Arabic_maddaonalef آ ARABIC LETTER ALEF WITH MADDA ABOVE */
       -  { 0x05c3, 0x0623 }, /*          Arabic_hamzaonalef أ ARABIC LETTER ALEF WITH HAMZA ABOVE */
       -  { 0x05c4, 0x0624 }, /*           Arabic_hamzaonwaw ؤ ARABIC LETTER WAW WITH HAMZA ABOVE */
       -  { 0x05c5, 0x0625 }, /*       Arabic_hamzaunderalef إ ARABIC LETTER ALEF WITH HAMZA BELOW */
       -  { 0x05c6, 0x0626 }, /*           Arabic_hamzaonyeh ئ ARABIC LETTER YEH WITH HAMZA ABOVE */
       -  { 0x05c7, 0x0627 }, /*                 Arabic_alef ا ARABIC LETTER ALEF */
       -  { 0x05c8, 0x0628 }, /*                  Arabic_beh ب ARABIC LETTER BEH */
       -  { 0x05c9, 0x0629 }, /*           Arabic_tehmarbuta ة ARABIC LETTER TEH MARBUTA */
       -  { 0x05ca, 0x062a }, /*                  Arabic_teh ت ARABIC LETTER TEH */
       -  { 0x05cb, 0x062b }, /*                 Arabic_theh ث ARABIC LETTER THEH */
       -  { 0x05cc, 0x062c }, /*                 Arabic_jeem ج ARABIC LETTER JEEM */
       -  { 0x05cd, 0x062d }, /*                  Arabic_hah ح ARABIC LETTER HAH */
       -  { 0x05ce, 0x062e }, /*                 Arabic_khah خ ARABIC LETTER KHAH */
       -  { 0x05cf, 0x062f }, /*                  Arabic_dal د ARABIC LETTER DAL */
       -  { 0x05d0, 0x0630 }, /*                 Arabic_thal ذ ARABIC LETTER THAL */
       -  { 0x05d1, 0x0631 }, /*                   Arabic_ra ر ARABIC LETTER REH */
       -  { 0x05d2, 0x0632 }, /*                 Arabic_zain ز ARABIC LETTER ZAIN */
       -  { 0x05d3, 0x0633 }, /*                 Arabic_seen س ARABIC LETTER SEEN */
       -  { 0x05d4, 0x0634 }, /*                Arabic_sheen ش ARABIC LETTER SHEEN */
       -  { 0x05d5, 0x0635 }, /*                  Arabic_sad ص ARABIC LETTER SAD */
       -  { 0x05d6, 0x0636 }, /*                  Arabic_dad ض ARABIC LETTER DAD */
       -  { 0x05d7, 0x0637 }, /*                  Arabic_tah ط ARABIC LETTER TAH */
       -  { 0x05d8, 0x0638 }, /*                  Arabic_zah ظ ARABIC LETTER ZAH */
       -  { 0x05d9, 0x0639 }, /*                  Arabic_ain ع ARABIC LETTER AIN */
       -  { 0x05da, 0x063a }, /*                Arabic_ghain غ ARABIC LETTER GHAIN */
       -  { 0x05e0, 0x0640 }, /*              Arabic_tatweel ـ ARABIC TATWEEL */
       -  { 0x05e1, 0x0641 }, /*                  Arabic_feh ف ARABIC LETTER FEH */
       -  { 0x05e2, 0x0642 }, /*                  Arabic_qaf ق ARABIC LETTER QAF */
       -  { 0x05e3, 0x0643 }, /*                  Arabic_kaf ك ARABIC LETTER KAF */
       -  { 0x05e4, 0x0644 }, /*                  Arabic_lam ل ARABIC LETTER LAM */
       -  { 0x05e5, 0x0645 }, /*                 Arabic_meem م ARABIC LETTER MEEM */
       -  { 0x05e6, 0x0646 }, /*                 Arabic_noon ن ARABIC LETTER NOON */
       -  { 0x05e7, 0x0647 }, /*                   Arabic_ha ه ARABIC LETTER HEH */
       -  { 0x05e8, 0x0648 }, /*                  Arabic_waw و ARABIC LETTER WAW */
       -  { 0x05e9, 0x0649 }, /*          Arabic_alefmaksura ى ARABIC LETTER ALEF MAKSURA */
       -  { 0x05ea, 0x064a }, /*                  Arabic_yeh ي ARABIC LETTER YEH */
       -  { 0x05eb, 0x064b }, /*             Arabic_fathatan ً ARABIC FATHATAN */
       -  { 0x05ec, 0x064c }, /*             Arabic_dammatan ٌ ARABIC DAMMATAN */
       -  { 0x05ed, 0x064d }, /*             Arabic_kasratan ٍ ARABIC KASRATAN */
       -  { 0x05ee, 0x064e }, /*                Arabic_fatha َ ARABIC FATHA */
       -  { 0x05ef, 0x064f }, /*                Arabic_damma ُ ARABIC DAMMA */
       -  { 0x05f0, 0x0650 }, /*                Arabic_kasra ِ ARABIC KASRA */
       -  { 0x05f1, 0x0651 }, /*               Arabic_shadda ّ ARABIC SHADDA */
       -  { 0x05f2, 0x0652 }, /*                Arabic_sukun ْ ARABIC SUKUN */
       -  { 0x06a1, 0x0452 }, /*                 Serbian_dje ђ CYRILLIC SMALL LETTER DJE */
       -  { 0x06a2, 0x0453 }, /*               Macedonia_gje ѓ CYRILLIC SMALL LETTER GJE */
       -  { 0x06a3, 0x0451 }, /*                 Cyrillic_io ё CYRILLIC SMALL LETTER IO */
       -  { 0x06a4, 0x0454 }, /*                Ukrainian_ie є CYRILLIC SMALL LETTER UKRAINIAN IE */
       -  { 0x06a5, 0x0455 }, /*               Macedonia_dse ѕ CYRILLIC SMALL LETTER DZE */
       -  { 0x06a6, 0x0456 }, /*                 Ukrainian_i і CYRILLIC SMALL LETTER BYELORUSSIAN-UKRAINIAN I */
       -  { 0x06a7, 0x0457 }, /*                Ukrainian_yi ї CYRILLIC SMALL LETTER YI */
       -  { 0x06a8, 0x0458 }, /*                 Cyrillic_je ј CYRILLIC SMALL LETTER JE */
       -  { 0x06a9, 0x0459 }, /*                Cyrillic_lje љ CYRILLIC SMALL LETTER LJE */
       -  { 0x06aa, 0x045a }, /*                Cyrillic_nje њ CYRILLIC SMALL LETTER NJE */
       -  { 0x06ab, 0x045b }, /*                Serbian_tshe ћ CYRILLIC SMALL LETTER TSHE */
       -  { 0x06ac, 0x045c }, /*               Macedonia_kje ќ CYRILLIC SMALL LETTER KJE */
       -  { 0x06ae, 0x045e }, /*         Byelorussian_shortu ў CYRILLIC SMALL LETTER SHORT U */
       -  { 0x06af, 0x045f }, /*               Cyrillic_dzhe џ CYRILLIC SMALL LETTER DZHE */
       -  { 0x06b0, 0x2116 }, /*                  numerosign № NUMERO SIGN */
       -  { 0x06b1, 0x0402 }, /*                 Serbian_DJE Ђ CYRILLIC CAPITAL LETTER DJE */
       -  { 0x06b2, 0x0403 }, /*               Macedonia_GJE Ѓ CYRILLIC CAPITAL LETTER GJE */
       -  { 0x06b3, 0x0401 }, /*                 Cyrillic_IO Ё CYRILLIC CAPITAL LETTER IO */
       -  { 0x06b4, 0x0404 }, /*                Ukrainian_IE Є CYRILLIC CAPITAL LETTER UKRAINIAN IE */
       -  { 0x06b5, 0x0405 }, /*               Macedonia_DSE Ѕ CYRILLIC CAPITAL LETTER DZE */
       -  { 0x06b6, 0x0406 }, /*                 Ukrainian_I І CYRILLIC CAPITAL LETTER BYELORUSSIAN-UKRAINIAN I */
       -  { 0x06b7, 0x0407 }, /*                Ukrainian_YI Ї CYRILLIC CAPITAL LETTER YI */
       -  { 0x06b8, 0x0408 }, /*                 Cyrillic_JE Ј CYRILLIC CAPITAL LETTER JE */
       -  { 0x06b9, 0x0409 }, /*                Cyrillic_LJE Љ CYRILLIC CAPITAL LETTER LJE */
       -  { 0x06ba, 0x040a }, /*                Cyrillic_NJE Њ CYRILLIC CAPITAL LETTER NJE */
       -  { 0x06bb, 0x040b }, /*                Serbian_TSHE Ћ CYRILLIC CAPITAL LETTER TSHE */
       -  { 0x06bc, 0x040c }, /*               Macedonia_KJE Ќ CYRILLIC CAPITAL LETTER KJE */
       -  { 0x06be, 0x040e }, /*         Byelorussian_SHORTU Ў CYRILLIC CAPITAL LETTER SHORT U */
       -  { 0x06bf, 0x040f }, /*               Cyrillic_DZHE Џ CYRILLIC CAPITAL LETTER DZHE */
       -  { 0x06c0, 0x044e }, /*                 Cyrillic_yu ю CYRILLIC SMALL LETTER YU */
       -  { 0x06c1, 0x0430 }, /*                  Cyrillic_a а CYRILLIC SMALL LETTER A */
       -  { 0x06c2, 0x0431 }, /*                 Cyrillic_be б CYRILLIC SMALL LETTER BE */
       -  { 0x06c3, 0x0446 }, /*                Cyrillic_tse ц CYRILLIC SMALL LETTER TSE */
       -  { 0x06c4, 0x0434 }, /*                 Cyrillic_de д CYRILLIC SMALL LETTER DE */
       -  { 0x06c5, 0x0435 }, /*                 Cyrillic_ie е CYRILLIC SMALL LETTER IE */
       -  { 0x06c6, 0x0444 }, /*                 Cyrillic_ef ф CYRILLIC SMALL LETTER EF */
       -  { 0x06c7, 0x0433 }, /*                Cyrillic_ghe г CYRILLIC SMALL LETTER GHE */
       -  { 0x06c8, 0x0445 }, /*                 Cyrillic_ha х CYRILLIC SMALL LETTER HA */
       -  { 0x06c9, 0x0438 }, /*                  Cyrillic_i и CYRILLIC SMALL LETTER I */
       -  { 0x06ca, 0x0439 }, /*             Cyrillic_shorti й CYRILLIC SMALL LETTER SHORT I */
       -  { 0x06cb, 0x043a }, /*                 Cyrillic_ka к CYRILLIC SMALL LETTER KA */
       -  { 0x06cc, 0x043b }, /*                 Cyrillic_el л CYRILLIC SMALL LETTER EL */
       -  { 0x06cd, 0x043c }, /*                 Cyrillic_em м CYRILLIC SMALL LETTER EM */
       -  { 0x06ce, 0x043d }, /*                 Cyrillic_en н CYRILLIC SMALL LETTER EN */
       -  { 0x06cf, 0x043e }, /*                  Cyrillic_o о CYRILLIC SMALL LETTER O */
       -  { 0x06d0, 0x043f }, /*                 Cyrillic_pe п CYRILLIC SMALL LETTER PE */
       -  { 0x06d1, 0x044f }, /*                 Cyrillic_ya я CYRILLIC SMALL LETTER YA */
       -  { 0x06d2, 0x0440 }, /*                 Cyrillic_er р CYRILLIC SMALL LETTER ER */
       -  { 0x06d3, 0x0441 }, /*                 Cyrillic_es с CYRILLIC SMALL LETTER ES */
       -  { 0x06d4, 0x0442 }, /*                 Cyrillic_te т CYRILLIC SMALL LETTER TE */
       -  { 0x06d5, 0x0443 }, /*                  Cyrillic_u у CYRILLIC SMALL LETTER U */
       -  { 0x06d6, 0x0436 }, /*                Cyrillic_zhe ж CYRILLIC SMALL LETTER ZHE */
       -  { 0x06d7, 0x0432 }, /*                 Cyrillic_ve в CYRILLIC SMALL LETTER VE */
       -  { 0x06d8, 0x044c }, /*           Cyrillic_softsign ь CYRILLIC SMALL LETTER SOFT SIGN */
       -  { 0x06d9, 0x044b }, /*               Cyrillic_yeru ы CYRILLIC SMALL LETTER YERU */
       -  { 0x06da, 0x0437 }, /*                 Cyrillic_ze з CYRILLIC SMALL LETTER ZE */
       -  { 0x06db, 0x0448 }, /*                Cyrillic_sha ш CYRILLIC SMALL LETTER SHA */
       -  { 0x06dc, 0x044d }, /*                  Cyrillic_e э CYRILLIC SMALL LETTER E */
       -  { 0x06dd, 0x0449 }, /*              Cyrillic_shcha щ CYRILLIC SMALL LETTER SHCHA */
       -  { 0x06de, 0x0447 }, /*                Cyrillic_che ч CYRILLIC SMALL LETTER CHE */
       -  { 0x06df, 0x044a }, /*           Cyrillic_hardsign ъ CYRILLIC SMALL LETTER HARD SIGN */
       -  { 0x06e0, 0x042e }, /*                 Cyrillic_YU Ю CYRILLIC CAPITAL LETTER YU */
       -  { 0x06e1, 0x0410 }, /*                  Cyrillic_A А CYRILLIC CAPITAL LETTER A */
       -  { 0x06e2, 0x0411 }, /*                 Cyrillic_BE Б CYRILLIC CAPITAL LETTER BE */
       -  { 0x06e3, 0x0426 }, /*                Cyrillic_TSE Ц CYRILLIC CAPITAL LETTER TSE */
       -  { 0x06e4, 0x0414 }, /*                 Cyrillic_DE Д CYRILLIC CAPITAL LETTER DE */
       -  { 0x06e5, 0x0415 }, /*                 Cyrillic_IE Е CYRILLIC CAPITAL LETTER IE */
       -  { 0x06e6, 0x0424 }, /*                 Cyrillic_EF Ф CYRILLIC CAPITAL LETTER EF */
       -  { 0x06e7, 0x0413 }, /*                Cyrillic_GHE Г CYRILLIC CAPITAL LETTER GHE */
       -  { 0x06e8, 0x0425 }, /*                 Cyrillic_HA Х CYRILLIC CAPITAL LETTER HA */
       -  { 0x06e9, 0x0418 }, /*                  Cyrillic_I И CYRILLIC CAPITAL LETTER I */
       -  { 0x06ea, 0x0419 }, /*             Cyrillic_SHORTI Й CYRILLIC CAPITAL LETTER SHORT I */
       -  { 0x06eb, 0x041a }, /*                 Cyrillic_KA К CYRILLIC CAPITAL LETTER KA */
       -  { 0x06ec, 0x041b }, /*                 Cyrillic_EL Л CYRILLIC CAPITAL LETTER EL */
       -  { 0x06ed, 0x041c }, /*                 Cyrillic_EM М CYRILLIC CAPITAL LETTER EM */
       -  { 0x06ee, 0x041d }, /*                 Cyrillic_EN Н CYRILLIC CAPITAL LETTER EN */
       -  { 0x06ef, 0x041e }, /*                  Cyrillic_O О CYRILLIC CAPITAL LETTER O */
       -  { 0x06f0, 0x041f }, /*                 Cyrillic_PE П CYRILLIC CAPITAL LETTER PE */
       -  { 0x06f1, 0x042f }, /*                 Cyrillic_YA Я CYRILLIC CAPITAL LETTER YA */
       -  { 0x06f2, 0x0420 }, /*                 Cyrillic_ER Р CYRILLIC CAPITAL LETTER ER */
       -  { 0x06f3, 0x0421 }, /*                 Cyrillic_ES С CYRILLIC CAPITAL LETTER ES */
       -  { 0x06f4, 0x0422 }, /*                 Cyrillic_TE Т CYRILLIC CAPITAL LETTER TE */
       -  { 0x06f5, 0x0423 }, /*                  Cyrillic_U У CYRILLIC CAPITAL LETTER U */
       -  { 0x06f6, 0x0416 }, /*                Cyrillic_ZHE Ж CYRILLIC CAPITAL LETTER ZHE */
       -  { 0x06f7, 0x0412 }, /*                 Cyrillic_VE В CYRILLIC CAPITAL LETTER VE */
       -  { 0x06f8, 0x042c }, /*           Cyrillic_SOFTSIGN Ь CYRILLIC CAPITAL LETTER SOFT SIGN */
       -  { 0x06f9, 0x042b }, /*               Cyrillic_YERU Ы CYRILLIC CAPITAL LETTER YERU */
       -  { 0x06fa, 0x0417 }, /*                 Cyrillic_ZE З CYRILLIC CAPITAL LETTER ZE */
       -  { 0x06fb, 0x0428 }, /*                Cyrillic_SHA Ш CYRILLIC CAPITAL LETTER SHA */
       -  { 0x06fc, 0x042d }, /*                  Cyrillic_E Э CYRILLIC CAPITAL LETTER E */
       -  { 0x06fd, 0x0429 }, /*              Cyrillic_SHCHA Щ CYRILLIC CAPITAL LETTER SHCHA */
       -  { 0x06fe, 0x0427 }, /*                Cyrillic_CHE Ч CYRILLIC CAPITAL LETTER CHE */
       -  { 0x06ff, 0x042a }, /*           Cyrillic_HARDSIGN Ъ CYRILLIC CAPITAL LETTER HARD SIGN */
       -  { 0x07a1, 0x0386 }, /*           Greek_ALPHAaccent Ά GREEK CAPITAL LETTER ALPHA WITH TONOS */
       -  { 0x07a2, 0x0388 }, /*         Greek_EPSILONaccent Έ GREEK CAPITAL LETTER EPSILON WITH TONOS */
       -  { 0x07a3, 0x0389 }, /*             Greek_ETAaccent Ή GREEK CAPITAL LETTER ETA WITH TONOS */
       -  { 0x07a4, 0x038a }, /*            Greek_IOTAaccent Ί GREEK CAPITAL LETTER IOTA WITH TONOS */
       -  { 0x07a5, 0x03aa }, /*         Greek_IOTAdiaeresis Ϊ GREEK CAPITAL LETTER IOTA WITH DIALYTIKA */
       -  { 0x07a7, 0x038c }, /*         Greek_OMICRONaccent Ό GREEK CAPITAL LETTER OMICRON WITH TONOS */
       -  { 0x07a8, 0x038e }, /*         Greek_UPSILONaccent Ύ GREEK CAPITAL LETTER UPSILON WITH TONOS */
       -  { 0x07a9, 0x03ab }, /*       Greek_UPSILONdieresis Ϋ GREEK CAPITAL LETTER UPSILON WITH DIALYTIKA */
       -  { 0x07ab, 0x038f }, /*           Greek_OMEGAaccent Ώ GREEK CAPITAL LETTER OMEGA WITH TONOS */
       -  { 0x07ae, 0x0385 }, /*        Greek_accentdieresis ΅ GREEK DIALYTIKA TONOS */
       -  { 0x07af, 0x2015 }, /*              Greek_horizbar ― HORIZONTAL BAR */
       -  { 0x07b1, 0x03ac }, /*           Greek_alphaaccent ά GREEK SMALL LETTER ALPHA WITH TONOS */
       -  { 0x07b2, 0x03ad }, /*         Greek_epsilonaccent έ GREEK SMALL LETTER EPSILON WITH TONOS */
       -  { 0x07b3, 0x03ae }, /*             Greek_etaaccent ή GREEK SMALL LETTER ETA WITH TONOS */
       -  { 0x07b4, 0x03af }, /*            Greek_iotaaccent ί GREEK SMALL LETTER IOTA WITH TONOS */
       -  { 0x07b5, 0x03ca }, /*          Greek_iotadieresis ϊ GREEK SMALL LETTER IOTA WITH DIALYTIKA */
       -  { 0x07b6, 0x0390 }, /*    Greek_iotaaccentdieresis ΐ GREEK SMALL LETTER IOTA WITH DIALYTIKA AND TONOS */
       -  { 0x07b7, 0x03cc }, /*         Greek_omicronaccent ό GREEK SMALL LETTER OMICRON WITH TONOS */
       -  { 0x07b8, 0x03cd }, /*         Greek_upsilonaccent ύ GREEK SMALL LETTER UPSILON WITH TONOS */
       -  { 0x07b9, 0x03cb }, /*       Greek_upsilondieresis ϋ GREEK SMALL LETTER UPSILON WITH DIALYTIKA */
       -  { 0x07ba, 0x03b0 }, /* Greek_upsilonaccentdieresis ΰ GREEK SMALL LETTER UPSILON WITH DIALYTIKA AND TONOS */
       -  { 0x07bb, 0x03ce }, /*           Greek_omegaaccent ώ GREEK SMALL LETTER OMEGA WITH TONOS */
       -  { 0x07c1, 0x0391 }, /*                 Greek_ALPHA Α GREEK CAPITAL LETTER ALPHA */
       -  { 0x07c2, 0x0392 }, /*                  Greek_BETA Β GREEK CAPITAL LETTER BETA */
       -  { 0x07c3, 0x0393 }, /*                 Greek_GAMMA Γ GREEK CAPITAL LETTER GAMMA */
       -  { 0x07c4, 0x0394 }, /*                 Greek_DELTA Δ GREEK CAPITAL LETTER DELTA */
       -  { 0x07c5, 0x0395 }, /*               Greek_EPSILON Ε GREEK CAPITAL LETTER EPSILON */
       -  { 0x07c6, 0x0396 }, /*                  Greek_ZETA Ζ GREEK CAPITAL LETTER ZETA */
       -  { 0x07c7, 0x0397 }, /*                   Greek_ETA Η GREEK CAPITAL LETTER ETA */
       -  { 0x07c8, 0x0398 }, /*                 Greek_THETA Θ GREEK CAPITAL LETTER THETA */
       -  { 0x07c9, 0x0399 }, /*                  Greek_IOTA Ι GREEK CAPITAL LETTER IOTA */
       -  { 0x07ca, 0x039a }, /*                 Greek_KAPPA Κ GREEK CAPITAL LETTER KAPPA */
       -  { 0x07cb, 0x039b }, /*                Greek_LAMBDA Λ GREEK CAPITAL LETTER LAMDA */
       -  { 0x07cc, 0x039c }, /*                    Greek_MU Μ GREEK CAPITAL LETTER MU */
       -  { 0x07cd, 0x039d }, /*                    Greek_NU Ν GREEK CAPITAL LETTER NU */
       -  { 0x07ce, 0x039e }, /*                    Greek_XI Ξ GREEK CAPITAL LETTER XI */
       -  { 0x07cf, 0x039f }, /*               Greek_OMICRON Ο GREEK CAPITAL LETTER OMICRON */
       -  { 0x07d0, 0x03a0 }, /*                    Greek_PI Π GREEK CAPITAL LETTER PI */
       -  { 0x07d1, 0x03a1 }, /*                   Greek_RHO Ρ GREEK CAPITAL LETTER RHO */
       -  { 0x07d2, 0x03a3 }, /*                 Greek_SIGMA Σ GREEK CAPITAL LETTER SIGMA */
       -  { 0x07d4, 0x03a4 }, /*                   Greek_TAU Τ GREEK CAPITAL LETTER TAU */
       -  { 0x07d5, 0x03a5 }, /*               Greek_UPSILON Υ GREEK CAPITAL LETTER UPSILON */
       -  { 0x07d6, 0x03a6 }, /*                   Greek_PHI Φ GREEK CAPITAL LETTER PHI */
       -  { 0x07d7, 0x03a7 }, /*                   Greek_CHI Χ GREEK CAPITAL LETTER CHI */
       -  { 0x07d8, 0x03a8 }, /*                   Greek_PSI Ψ GREEK CAPITAL LETTER PSI */
       -  { 0x07d9, 0x03a9 }, /*                 Greek_OMEGA Ω GREEK CAPITAL LETTER OMEGA */
       -  { 0x07e1, 0x03b1 }, /*                 Greek_alpha α GREEK SMALL LETTER ALPHA */
       -  { 0x07e2, 0x03b2 }, /*                  Greek_beta β GREEK SMALL LETTER BETA */
       -  { 0x07e3, 0x03b3 }, /*                 Greek_gamma γ GREEK SMALL LETTER GAMMA */
       -  { 0x07e4, 0x03b4 }, /*                 Greek_delta δ GREEK SMALL LETTER DELTA */
       -  { 0x07e5, 0x03b5 }, /*               Greek_epsilon ε GREEK SMALL LETTER EPSILON */
       -  { 0x07e6, 0x03b6 }, /*                  Greek_zeta ζ GREEK SMALL LETTER ZETA */
       -  { 0x07e7, 0x03b7 }, /*                   Greek_eta η GREEK SMALL LETTER ETA */
       -  { 0x07e8, 0x03b8 }, /*                 Greek_theta θ GREEK SMALL LETTER THETA */
       -  { 0x07e9, 0x03b9 }, /*                  Greek_iota ι GREEK SMALL LETTER IOTA */
       -  { 0x07ea, 0x03ba }, /*                 Greek_kappa κ GREEK SMALL LETTER KAPPA */
       -  { 0x07eb, 0x03bb }, /*                Greek_lambda λ GREEK SMALL LETTER LAMDA */
       -  { 0x07ec, 0x03bc }, /*                    Greek_mu μ GREEK SMALL LETTER MU */
       -  { 0x07ed, 0x03bd }, /*                    Greek_nu ν GREEK SMALL LETTER NU */
       -  { 0x07ee, 0x03be }, /*                    Greek_xi ξ GREEK SMALL LETTER XI */
       -  { 0x07ef, 0x03bf }, /*               Greek_omicron ο GREEK SMALL LETTER OMICRON */
       -  { 0x07f0, 0x03c0 }, /*                    Greek_pi π GREEK SMALL LETTER PI */
       -  { 0x07f1, 0x03c1 }, /*                   Greek_rho ρ GREEK SMALL LETTER RHO */
       -  { 0x07f2, 0x03c3 }, /*                 Greek_sigma σ GREEK SMALL LETTER SIGMA */
       -  { 0x07f3, 0x03c2 }, /*       Greek_finalsmallsigma ς GREEK SMALL LETTER FINAL SIGMA */
       -  { 0x07f4, 0x03c4 }, /*                   Greek_tau τ GREEK SMALL LETTER TAU */
       -  { 0x07f5, 0x03c5 }, /*               Greek_upsilon υ GREEK SMALL LETTER UPSILON */
       -  { 0x07f6, 0x03c6 }, /*                   Greek_phi φ GREEK SMALL LETTER PHI */
       -  { 0x07f7, 0x03c7 }, /*                   Greek_chi χ GREEK SMALL LETTER CHI */
       -  { 0x07f8, 0x03c8 }, /*                   Greek_psi ψ GREEK SMALL LETTER PSI */
       -  { 0x07f9, 0x03c9 }, /*                 Greek_omega ω GREEK SMALL LETTER OMEGA */
       -  { 0x08a1, 0x23b7 }, /*                 leftradical ⎷ ??? */
       -  { 0x08a2, 0x250c }, /*              topleftradical ┌ BOX DRAWINGS LIGHT DOWN AND RIGHT */
       -  { 0x08a3, 0x2500 }, /*              horizconnector ─ BOX DRAWINGS LIGHT HORIZONTAL */
       -  { 0x08a4, 0x2320 }, /*                 topintegral ⌠ TOP HALF INTEGRAL */
       -  { 0x08a5, 0x2321 }, /*                 botintegral ⌡ BOTTOM HALF INTEGRAL */
       -  { 0x08a6, 0x2502 }, /*               vertconnector │ BOX DRAWINGS LIGHT VERTICAL */
       -  { 0x08a7, 0x23a1 }, /*            topleftsqbracket ⎡ ??? */
       -  { 0x08a8, 0x23a3 }, /*            botleftsqbracket ⎣ ??? */
       -  { 0x08a9, 0x23a4 }, /*           toprightsqbracket ⎤ ??? */
       -  { 0x08aa, 0x23a6 }, /*           botrightsqbracket ⎦ ??? */
       -  { 0x08ab, 0x239b }, /*               topleftparens ⎛ ??? */
       -  { 0x08ac, 0x239d }, /*               botleftparens ⎝ ??? */
       -  { 0x08ad, 0x239e }, /*              toprightparens ⎞ ??? */
       -  { 0x08ae, 0x23a0 }, /*              botrightparens ⎠ ??? */
       -  { 0x08af, 0x23a8 }, /*        leftmiddlecurlybrace ⎨ ??? */
       -  { 0x08b0, 0x23ac }, /*       rightmiddlecurlybrace ⎬ ??? */
       -/*  0x08b1                          topleftsummation ? ??? */
       -/*  0x08b2                          botleftsummation ? ??? */
       -/*  0x08b3                 topvertsummationconnector ? ??? */
       -/*  0x08b4                 botvertsummationconnector ? ??? */
       -/*  0x08b5                         toprightsummation ? ??? */
       -/*  0x08b6                         botrightsummation ? ??? */
       -/*  0x08b7                      rightmiddlesummation ? ??? */
       -  { 0x08bc, 0x2264 }, /*               lessthanequal ≤ LESS-THAN OR EQUAL TO */
       -  { 0x08bd, 0x2260 }, /*                    notequal ≠ NOT EQUAL TO */
       -  { 0x08be, 0x2265 }, /*            greaterthanequal ≥ GREATER-THAN OR EQUAL TO */
       -  { 0x08bf, 0x222b }, /*                    integral ∫ INTEGRAL */
       -  { 0x08c0, 0x2234 }, /*                   therefore ∴ THEREFORE */
       -  { 0x08c1, 0x221d }, /*                   variation ∝ PROPORTIONAL TO */
       -  { 0x08c2, 0x221e }, /*                    infinity ∞ INFINITY */
       -  { 0x08c5, 0x2207 }, /*                       nabla ∇ NABLA */
       -  { 0x08c8, 0x223c }, /*                 approximate ∼ TILDE OPERATOR */
       -  { 0x08c9, 0x2243 }, /*                similarequal ≃ ASYMPTOTICALLY EQUAL TO */
       -  { 0x08cd, 0x21d4 }, /*                    ifonlyif ⇔ LEFT RIGHT DOUBLE ARROW */
       -  { 0x08ce, 0x21d2 }, /*                     implies ⇒ RIGHTWARDS DOUBLE ARROW */
       -  { 0x08cf, 0x2261 }, /*                   identical ≡ IDENTICAL TO */
       -  { 0x08d6, 0x221a }, /*                     radical √ SQUARE ROOT */
       -  { 0x08da, 0x2282 }, /*                  includedin ⊂ SUBSET OF */
       -  { 0x08db, 0x2283 }, /*                    includes ⊃ SUPERSET OF */
       -  { 0x08dc, 0x2229 }, /*                intersection ∩ INTERSECTION */
       -  { 0x08dd, 0x222a }, /*                       union ∪ UNION */
       -  { 0x08de, 0x2227 }, /*                  logicaland ∧ LOGICAL AND */
       -  { 0x08df, 0x2228 }, /*                   logicalor ∨ LOGICAL OR */
       -  { 0x08ef, 0x2202 }, /*           partialderivative ∂ PARTIAL DIFFERENTIAL */
       -  { 0x08f6, 0x0192 }, /*                    function ƒ LATIN SMALL LETTER F WITH HOOK */
       -  { 0x08fb, 0x2190 }, /*                   leftarrow ← LEFTWARDS ARROW */
       -  { 0x08fc, 0x2191 }, /*                     uparrow ↑ UPWARDS ARROW */
       -  { 0x08fd, 0x2192 }, /*                  rightarrow → RIGHTWARDS ARROW */
       -  { 0x08fe, 0x2193 }, /*                   downarrow ↓ DOWNWARDS ARROW */
       -/*  0x09df                                     blank ? ??? */
       -  { 0x09e0, 0x25c6 }, /*                soliddiamond ◆ BLACK DIAMOND */
       -  { 0x09e1, 0x2592 }, /*                checkerboard ▒ MEDIUM SHADE */
       -  { 0x09e2, 0x2409 }, /*                          ht ␉ SYMBOL FOR HORIZONTAL TABULATION */
       -  { 0x09e3, 0x240c }, /*                          ff ␌ SYMBOL FOR FORM FEED */
       -  { 0x09e4, 0x240d }, /*                          cr ␍ SYMBOL FOR CARRIAGE RETURN */
       -  { 0x09e5, 0x240a }, /*                          lf ␊ SYMBOL FOR LINE FEED */
       -  { 0x09e8, 0x2424 }, /*                          nl ␤ SYMBOL FOR NEWLINE */
       -  { 0x09e9, 0x240b }, /*                          vt ␋ SYMBOL FOR VERTICAL TABULATION */
       -  { 0x09ea, 0x2518 }, /*              lowrightcorner ┘ BOX DRAWINGS LIGHT UP AND LEFT */
       -  { 0x09eb, 0x2510 }, /*               uprightcorner ┐ BOX DRAWINGS LIGHT DOWN AND LEFT */
       -  { 0x09ec, 0x250c }, /*                upleftcorner ┌ BOX DRAWINGS LIGHT DOWN AND RIGHT */
       -  { 0x09ed, 0x2514 }, /*               lowleftcorner └ BOX DRAWINGS LIGHT UP AND RIGHT */
       -  { 0x09ee, 0x253c }, /*               crossinglines ┼ BOX DRAWINGS LIGHT VERTICAL AND HORIZONTAL */
       -  { 0x09ef, 0x23ba }, /*              horizlinescan1 ⎺ HORIZONTAL SCAN LINE-1 (Unicode 3.2 draft) */
       -  { 0x09f0, 0x23bb }, /*              horizlinescan3 ⎻ HORIZONTAL SCAN LINE-3 (Unicode 3.2 draft) */
       -  { 0x09f1, 0x2500 }, /*              horizlinescan5 ─ BOX DRAWINGS LIGHT HORIZONTAL */
       -  { 0x09f2, 0x23bc }, /*              horizlinescan7 ⎼ HORIZONTAL SCAN LINE-7 (Unicode 3.2 draft) */
       -  { 0x09f3, 0x23bd }, /*              horizlinescan9 ⎽ HORIZONTAL SCAN LINE-9 (Unicode 3.2 draft) */
       -  { 0x09f4, 0x251c }, /*                       leftt ├ BOX DRAWINGS LIGHT VERTICAL AND RIGHT */
       -  { 0x09f5, 0x2524 }, /*                      rightt ┤ BOX DRAWINGS LIGHT VERTICAL AND LEFT */
       -  { 0x09f6, 0x2534 }, /*                        bott ┴ BOX DRAWINGS LIGHT UP AND HORIZONTAL */
       -  { 0x09f7, 0x252c }, /*                        topt ┬ BOX DRAWINGS LIGHT DOWN AND HORIZONTAL */
       -  { 0x09f8, 0x2502 }, /*                     vertbar │ BOX DRAWINGS LIGHT VERTICAL */
       -  { 0x0aa1, 0x2003 }, /*                     emspace   EM SPACE */
       -  { 0x0aa2, 0x2002 }, /*                     enspace   EN SPACE */
       -  { 0x0aa3, 0x2004 }, /*                    em3space   THREE-PER-EM SPACE */
       -  { 0x0aa4, 0x2005 }, /*                    em4space   FOUR-PER-EM SPACE */
       -  { 0x0aa5, 0x2007 }, /*                  digitspace   FIGURE SPACE */
       -  { 0x0aa6, 0x2008 }, /*                  punctspace   PUNCTUATION SPACE */
       -  { 0x0aa7, 0x2009 }, /*                   thinspace   THIN SPACE */
       -  { 0x0aa8, 0x200a }, /*                   hairspace   HAIR SPACE */
       -  { 0x0aa9, 0x2014 }, /*                      emdash — EM DASH */
       -  { 0x0aaa, 0x2013 }, /*                      endash – EN DASH */
       -/*  0x0aac                               signifblank ? ??? */
       -  { 0x0aae, 0x2026 }, /*                    ellipsis … HORIZONTAL ELLIPSIS */
       -  { 0x0aaf, 0x2025 }, /*             doubbaselinedot ‥ TWO DOT LEADER */
       -  { 0x0ab0, 0x2153 }, /*                    onethird ⅓ VULGAR FRACTION ONE THIRD */
       -  { 0x0ab1, 0x2154 }, /*                   twothirds ⅔ VULGAR FRACTION TWO THIRDS */
       -  { 0x0ab2, 0x2155 }, /*                    onefifth ⅕ VULGAR FRACTION ONE FIFTH */
       -  { 0x0ab3, 0x2156 }, /*                   twofifths ⅖ VULGAR FRACTION TWO FIFTHS */
       -  { 0x0ab4, 0x2157 }, /*                 threefifths ⅗ VULGAR FRACTION THREE FIFTHS */
       -  { 0x0ab5, 0x2158 }, /*                  fourfifths ⅘ VULGAR FRACTION FOUR FIFTHS */
       -  { 0x0ab6, 0x2159 }, /*                    onesixth ⅙ VULGAR FRACTION ONE SIXTH */
       -  { 0x0ab7, 0x215a }, /*                  fivesixths ⅚ VULGAR FRACTION FIVE SIXTHS */
       -  { 0x0ab8, 0x2105 }, /*                      careof ℅ CARE OF */
       -  { 0x0abb, 0x2012 }, /*                     figdash ‒ FIGURE DASH */
       -  { 0x0abc, 0x2329 }, /*            leftanglebracket 〈 LEFT-POINTING ANGLE BRACKET */
       -/*  0x0abd                              decimalpoint ? ??? */
       -  { 0x0abe, 0x232a }, /*           rightanglebracket 〉 RIGHT-POINTING ANGLE BRACKET */
       -/*  0x0abf                                    marker ? ??? */
       -  { 0x0ac3, 0x215b }, /*                   oneeighth ⅛ VULGAR FRACTION ONE EIGHTH */
       -  { 0x0ac4, 0x215c }, /*                threeeighths ⅜ VULGAR FRACTION THREE EIGHTHS */
       -  { 0x0ac5, 0x215d }, /*                 fiveeighths ⅝ VULGAR FRACTION FIVE EIGHTHS */
       -  { 0x0ac6, 0x215e }, /*                seveneighths ⅞ VULGAR FRACTION SEVEN EIGHTHS */
       -  { 0x0ac9, 0x2122 }, /*                   trademark ™ TRADE MARK SIGN */
       -  { 0x0aca, 0x2613 }, /*               signaturemark ☓ SALTIRE */
       -/*  0x0acb                         trademarkincircle ? ??? */
       -  { 0x0acc, 0x25c1 }, /*            leftopentriangle ◁ WHITE LEFT-POINTING TRIANGLE */
       -  { 0x0acd, 0x25b7 }, /*           rightopentriangle ▷ WHITE RIGHT-POINTING TRIANGLE */
       -  { 0x0ace, 0x25cb }, /*                emopencircle ○ WHITE CIRCLE */
       -  { 0x0acf, 0x25af }, /*             emopenrectangle ▯ WHITE VERTICAL RECTANGLE */
       -  { 0x0ad0, 0x2018 }, /*         leftsinglequotemark ‘ LEFT SINGLE QUOTATION MARK */
       -  { 0x0ad1, 0x2019 }, /*        rightsinglequotemark ’ RIGHT SINGLE QUOTATION MARK */
       -  { 0x0ad2, 0x201c }, /*         leftdoublequotemark “ LEFT DOUBLE QUOTATION MARK */
       -  { 0x0ad3, 0x201d }, /*        rightdoublequotemark ” RIGHT DOUBLE QUOTATION MARK */
       -  { 0x0ad4, 0x211e }, /*                prescription ℞ PRESCRIPTION TAKE */
       -  { 0x0ad6, 0x2032 }, /*                     minutes ′ PRIME */
       -  { 0x0ad7, 0x2033 }, /*                     seconds ″ DOUBLE PRIME */
       -  { 0x0ad9, 0x271d }, /*                  latincross ✝ LATIN CROSS */
       -/*  0x0ada                                  hexagram ? ??? */
       -  { 0x0adb, 0x25ac }, /*            filledrectbullet ▬ BLACK RECTANGLE */
       -  { 0x0adc, 0x25c0 }, /*         filledlefttribullet ◀ BLACK LEFT-POINTING TRIANGLE */
       -  { 0x0add, 0x25b6 }, /*        filledrighttribullet ▶ BLACK RIGHT-POINTING TRIANGLE */
       -  { 0x0ade, 0x25cf }, /*              emfilledcircle ● BLACK CIRCLE */
       -  { 0x0adf, 0x25ae }, /*                emfilledrect ▮ BLACK VERTICAL RECTANGLE */
       -  { 0x0ae0, 0x25e6 }, /*            enopencircbullet ◦ WHITE BULLET */
       -  { 0x0ae1, 0x25ab }, /*          enopensquarebullet ▫ WHITE SMALL SQUARE */
       -  { 0x0ae2, 0x25ad }, /*              openrectbullet ▭ WHITE RECTANGLE */
       -  { 0x0ae3, 0x25b3 }, /*             opentribulletup △ WHITE UP-POINTING TRIANGLE */
       -  { 0x0ae4, 0x25bd }, /*           opentribulletdown ▽ WHITE DOWN-POINTING TRIANGLE */
       -  { 0x0ae5, 0x2606 }, /*                    openstar ☆ WHITE STAR */
       -  { 0x0ae6, 0x2022 }, /*          enfilledcircbullet • BULLET */
       -  { 0x0ae7, 0x25aa }, /*            enfilledsqbullet ▪ BLACK SMALL SQUARE */
       -  { 0x0ae8, 0x25b2 }, /*           filledtribulletup ▲ BLACK UP-POINTING TRIANGLE */
       -  { 0x0ae9, 0x25bc }, /*         filledtribulletdown ▼ BLACK DOWN-POINTING TRIANGLE */
       -  { 0x0aea, 0x261c }, /*                 leftpointer ☜ WHITE LEFT POINTING INDEX */
       -  { 0x0aeb, 0x261e }, /*                rightpointer ☞ WHITE RIGHT POINTING INDEX */
       -  { 0x0aec, 0x2663 }, /*                        club ♣ BLACK CLUB SUIT */
       -  { 0x0aed, 0x2666 }, /*                     diamond ♦ BLACK DIAMOND SUIT */
       -  { 0x0aee, 0x2665 }, /*                       heart ♥ BLACK HEART SUIT */
       -  { 0x0af0, 0x2720 }, /*                maltesecross ✠ MALTESE CROSS */
       -  { 0x0af1, 0x2020 }, /*                      dagger † DAGGER */
       -  { 0x0af2, 0x2021 }, /*                doubledagger ‡ DOUBLE DAGGER */
       -  { 0x0af3, 0x2713 }, /*                   checkmark ✓ CHECK MARK */
       -  { 0x0af4, 0x2717 }, /*                 ballotcross ✗ BALLOT X */
       -  { 0x0af5, 0x266f }, /*                musicalsharp ♯ MUSIC SHARP SIGN */
       -  { 0x0af6, 0x266d }, /*                 musicalflat ♭ MUSIC FLAT SIGN */
       -  { 0x0af7, 0x2642 }, /*                  malesymbol ♂ MALE SIGN */
       -  { 0x0af8, 0x2640 }, /*                femalesymbol ♀ FEMALE SIGN */
       -  { 0x0af9, 0x260e }, /*                   telephone ☎ BLACK TELEPHONE */
       -  { 0x0afa, 0x2315 }, /*           telephonerecorder ⌕ TELEPHONE RECORDER */
       -  { 0x0afb, 0x2117 }, /*         phonographcopyright ℗ SOUND RECORDING COPYRIGHT */
       -  { 0x0afc, 0x2038 }, /*                       caret ‸ CARET */
       -  { 0x0afd, 0x201a }, /*          singlelowquotemark ‚ SINGLE LOW-9 QUOTATION MARK */
       -  { 0x0afe, 0x201e }, /*          doublelowquotemark „ DOUBLE LOW-9 QUOTATION MARK */
       -/*  0x0aff                                    cursor ? ??? */
       -  { 0x0ba3, 0x003c }, /*                   leftcaret < LESS-THAN SIGN */
       -  { 0x0ba6, 0x003e }, /*                  rightcaret > GREATER-THAN SIGN */
       -  { 0x0ba8, 0x2228 }, /*                   downcaret ∨ LOGICAL OR */
       -  { 0x0ba9, 0x2227 }, /*                     upcaret ∧ LOGICAL AND */
       -  { 0x0bc0, 0x00af }, /*                     overbar ¯ MACRON */
       -  { 0x0bc2, 0x22a5 }, /*                    downtack ⊥ UP TACK */
       -  { 0x0bc3, 0x2229 }, /*                      upshoe ∩ INTERSECTION */
       -  { 0x0bc4, 0x230a }, /*                   downstile ⌊ LEFT FLOOR */
       -  { 0x0bc6, 0x005f }, /*                    underbar _ LOW LINE */
       -  { 0x0bca, 0x2218 }, /*                         jot ∘ RING OPERATOR */
       -  { 0x0bcc, 0x2395 }, /*                        quad ⎕ APL FUNCTIONAL SYMBOL QUAD */
       -  { 0x0bce, 0x22a4 }, /*                      uptack ⊤ DOWN TACK */
       -  { 0x0bcf, 0x25cb }, /*                      circle ○ WHITE CIRCLE */
       -  { 0x0bd3, 0x2308 }, /*                     upstile ⌈ LEFT CEILING */
       -  { 0x0bd6, 0x222a }, /*                    downshoe ∪ UNION */
       -  { 0x0bd8, 0x2283 }, /*                   rightshoe ⊃ SUPERSET OF */
       -  { 0x0bda, 0x2282 }, /*                    leftshoe ⊂ SUBSET OF */
       -  { 0x0bdc, 0x22a2 }, /*                    lefttack ⊢ RIGHT TACK */
       -  { 0x0bfc, 0x22a3 }, /*                   righttack ⊣ LEFT TACK */
       -  { 0x0cdf, 0x2017 }, /*        hebrew_doublelowline ‗ DOUBLE LOW LINE */
       -  { 0x0ce0, 0x05d0 }, /*                hebrew_aleph א HEBREW LETTER ALEF */
       -  { 0x0ce1, 0x05d1 }, /*                  hebrew_bet ב HEBREW LETTER BET */
       -  { 0x0ce2, 0x05d2 }, /*                hebrew_gimel ג HEBREW LETTER GIMEL */
       -  { 0x0ce3, 0x05d3 }, /*                hebrew_dalet ד HEBREW LETTER DALET */
       -  { 0x0ce4, 0x05d4 }, /*                   hebrew_he ה HEBREW LETTER HE */
       -  { 0x0ce5, 0x05d5 }, /*                  hebrew_waw ו HEBREW LETTER VAV */
       -  { 0x0ce6, 0x05d6 }, /*                 hebrew_zain ז HEBREW LETTER ZAYIN */
       -  { 0x0ce7, 0x05d7 }, /*                 hebrew_chet ח HEBREW LETTER HET */
       -  { 0x0ce8, 0x05d8 }, /*                  hebrew_tet ט HEBREW LETTER TET */
       -  { 0x0ce9, 0x05d9 }, /*                  hebrew_yod י HEBREW LETTER YOD */
       -  { 0x0cea, 0x05da }, /*            hebrew_finalkaph ך HEBREW LETTER FINAL KAF */
       -  { 0x0ceb, 0x05db }, /*                 hebrew_kaph כ HEBREW LETTER KAF */
       -  { 0x0cec, 0x05dc }, /*                hebrew_lamed ל HEBREW LETTER LAMED */
       -  { 0x0ced, 0x05dd }, /*             hebrew_finalmem ם HEBREW LETTER FINAL MEM */
       -  { 0x0cee, 0x05de }, /*                  hebrew_mem מ HEBREW LETTER MEM */
       -  { 0x0cef, 0x05df }, /*             hebrew_finalnun ן HEBREW LETTER FINAL NUN */
       -  { 0x0cf0, 0x05e0 }, /*                  hebrew_nun נ HEBREW LETTER NUN */
       -  { 0x0cf1, 0x05e1 }, /*               hebrew_samech ס HEBREW LETTER SAMEKH */
       -  { 0x0cf2, 0x05e2 }, /*                 hebrew_ayin ע HEBREW LETTER AYIN */
       -  { 0x0cf3, 0x05e3 }, /*              hebrew_finalpe ף HEBREW LETTER FINAL PE */
       -  { 0x0cf4, 0x05e4 }, /*                   hebrew_pe פ HEBREW LETTER PE */
       -  { 0x0cf5, 0x05e5 }, /*            hebrew_finalzade ץ HEBREW LETTER FINAL TSADI */
       -  { 0x0cf6, 0x05e6 }, /*                 hebrew_zade צ HEBREW LETTER TSADI */
       -  { 0x0cf7, 0x05e7 }, /*                 hebrew_qoph ק HEBREW LETTER QOF */
       -  { 0x0cf8, 0x05e8 }, /*                 hebrew_resh ר HEBREW LETTER RESH */
       -  { 0x0cf9, 0x05e9 }, /*                 hebrew_shin ש HEBREW LETTER SHIN */
       -  { 0x0cfa, 0x05ea }, /*                  hebrew_taw ת HEBREW LETTER TAV */
       -  { 0x0da1, 0x0e01 }, /*                  Thai_kokai ก THAI CHARACTER KO KAI */
       -  { 0x0da2, 0x0e02 }, /*                Thai_khokhai ข THAI CHARACTER KHO KHAI */
       -  { 0x0da3, 0x0e03 }, /*               Thai_khokhuat ฃ THAI CHARACTER KHO KHUAT */
       -  { 0x0da4, 0x0e04 }, /*               Thai_khokhwai ค THAI CHARACTER KHO KHWAI */
       -  { 0x0da5, 0x0e05 }, /*                Thai_khokhon ฅ THAI CHARACTER KHO KHON */
       -  { 0x0da6, 0x0e06 }, /*             Thai_khorakhang ฆ THAI CHARACTER KHO RAKHANG */
       -  { 0x0da7, 0x0e07 }, /*                 Thai_ngongu ง THAI CHARACTER NGO NGU */
       -  { 0x0da8, 0x0e08 }, /*                Thai_chochan จ THAI CHARACTER CHO CHAN */
       -  { 0x0da9, 0x0e09 }, /*               Thai_choching ฉ THAI CHARACTER CHO CHING */
       -  { 0x0daa, 0x0e0a }, /*               Thai_chochang ช THAI CHARACTER CHO CHANG */
       -  { 0x0dab, 0x0e0b }, /*                   Thai_soso ซ THAI CHARACTER SO SO */
       -  { 0x0dac, 0x0e0c }, /*                Thai_chochoe ฌ THAI CHARACTER CHO CHOE */
       -  { 0x0dad, 0x0e0d }, /*                 Thai_yoying ญ THAI CHARACTER YO YING */
       -  { 0x0dae, 0x0e0e }, /*                Thai_dochada ฎ THAI CHARACTER DO CHADA */
       -  { 0x0daf, 0x0e0f }, /*                Thai_topatak ฏ THAI CHARACTER TO PATAK */
       -  { 0x0db0, 0x0e10 }, /*                Thai_thothan ฐ THAI CHARACTER THO THAN */
       -  { 0x0db1, 0x0e11 }, /*          Thai_thonangmontho ฑ THAI CHARACTER THO NANGMONTHO */
       -  { 0x0db2, 0x0e12 }, /*             Thai_thophuthao ฒ THAI CHARACTER THO PHUTHAO */
       -  { 0x0db3, 0x0e13 }, /*                  Thai_nonen ณ THAI CHARACTER NO NEN */
       -  { 0x0db4, 0x0e14 }, /*                  Thai_dodek ด THAI CHARACTER DO DEK */
       -  { 0x0db5, 0x0e15 }, /*                  Thai_totao ต THAI CHARACTER TO TAO */
       -  { 0x0db6, 0x0e16 }, /*               Thai_thothung ถ THAI CHARACTER THO THUNG */
       -  { 0x0db7, 0x0e17 }, /*              Thai_thothahan ท THAI CHARACTER THO THAHAN */
       -  { 0x0db8, 0x0e18 }, /*               Thai_thothong ธ THAI CHARACTER THO THONG */
       -  { 0x0db9, 0x0e19 }, /*                   Thai_nonu น THAI CHARACTER NO NU */
       -  { 0x0dba, 0x0e1a }, /*               Thai_bobaimai บ THAI CHARACTER BO BAIMAI */
       -  { 0x0dbb, 0x0e1b }, /*                  Thai_popla ป THAI CHARACTER PO PLA */
       -  { 0x0dbc, 0x0e1c }, /*               Thai_phophung ผ THAI CHARACTER PHO PHUNG */
       -  { 0x0dbd, 0x0e1d }, /*                   Thai_fofa ฝ THAI CHARACTER FO FA */
       -  { 0x0dbe, 0x0e1e }, /*                Thai_phophan พ THAI CHARACTER PHO PHAN */
       -  { 0x0dbf, 0x0e1f }, /*                  Thai_fofan ฟ THAI CHARACTER FO FAN */
       -  { 0x0dc0, 0x0e20 }, /*             Thai_phosamphao ภ THAI CHARACTER PHO SAMPHAO */
       -  { 0x0dc1, 0x0e21 }, /*                   Thai_moma ม THAI CHARACTER MO MA */
       -  { 0x0dc2, 0x0e22 }, /*                  Thai_yoyak ย THAI CHARACTER YO YAK */
       -  { 0x0dc3, 0x0e23 }, /*                  Thai_rorua ร THAI CHARACTER RO RUA */
       -  { 0x0dc4, 0x0e24 }, /*                     Thai_ru ฤ THAI CHARACTER RU */
       -  { 0x0dc5, 0x0e25 }, /*                 Thai_loling ล THAI CHARACTER LO LING */
       -  { 0x0dc6, 0x0e26 }, /*                     Thai_lu ฦ THAI CHARACTER LU */
       -  { 0x0dc7, 0x0e27 }, /*                 Thai_wowaen ว THAI CHARACTER WO WAEN */
       -  { 0x0dc8, 0x0e28 }, /*                 Thai_sosala ศ THAI CHARACTER SO SALA */
       -  { 0x0dc9, 0x0e29 }, /*                 Thai_sorusi ษ THAI CHARACTER SO RUSI */
       -  { 0x0dca, 0x0e2a }, /*                  Thai_sosua ส THAI CHARACTER SO SUA */
       -  { 0x0dcb, 0x0e2b }, /*                  Thai_hohip ห THAI CHARACTER HO HIP */
       -  { 0x0dcc, 0x0e2c }, /*                Thai_lochula ฬ THAI CHARACTER LO CHULA */
       -  { 0x0dcd, 0x0e2d }, /*                   Thai_oang อ THAI CHARACTER O ANG */
       -  { 0x0dce, 0x0e2e }, /*               Thai_honokhuk ฮ THAI CHARACTER HO NOKHUK */
       -  { 0x0dcf, 0x0e2f }, /*              Thai_paiyannoi ฯ THAI CHARACTER PAIYANNOI */
       -  { 0x0dd0, 0x0e30 }, /*                  Thai_saraa ะ THAI CHARACTER SARA A */
       -  { 0x0dd1, 0x0e31 }, /*             Thai_maihanakat ั THAI CHARACTER MAI HAN-AKAT */
       -  { 0x0dd2, 0x0e32 }, /*                 Thai_saraaa า THAI CHARACTER SARA AA */
       -  { 0x0dd3, 0x0e33 }, /*                 Thai_saraam ำ THAI CHARACTER SARA AM */
       -  { 0x0dd4, 0x0e34 }, /*                  Thai_sarai ิ THAI CHARACTER SARA I */
       -  { 0x0dd5, 0x0e35 }, /*                 Thai_saraii ี THAI CHARACTER SARA II */
       -  { 0x0dd6, 0x0e36 }, /*                 Thai_saraue ึ THAI CHARACTER SARA UE */
       -  { 0x0dd7, 0x0e37 }, /*                Thai_sarauee ื THAI CHARACTER SARA UEE */
       -  { 0x0dd8, 0x0e38 }, /*                  Thai_sarau ุ THAI CHARACTER SARA U */
       -  { 0x0dd9, 0x0e39 }, /*                 Thai_sarauu ู THAI CHARACTER SARA UU */
       -  { 0x0dda, 0x0e3a }, /*                Thai_phinthu ฺ THAI CHARACTER PHINTHU */
       -/*  0x0dde                    Thai_maihanakat_maitho ? ??? */
       -  { 0x0ddf, 0x0e3f }, /*                   Thai_baht ฿ THAI CURRENCY SYMBOL BAHT */
       -  { 0x0de0, 0x0e40 }, /*                  Thai_sarae เ THAI CHARACTER SARA E */
       -  { 0x0de1, 0x0e41 }, /*                 Thai_saraae แ THAI CHARACTER SARA AE */
       -  { 0x0de2, 0x0e42 }, /*                  Thai_sarao โ THAI CHARACTER SARA O */
       -  { 0x0de3, 0x0e43 }, /*          Thai_saraaimaimuan ใ THAI CHARACTER SARA AI MAIMUAN */
       -  { 0x0de4, 0x0e44 }, /*         Thai_saraaimaimalai ไ THAI CHARACTER SARA AI MAIMALAI */
       -  { 0x0de5, 0x0e45 }, /*            Thai_lakkhangyao ๅ THAI CHARACTER LAKKHANGYAO */
       -  { 0x0de6, 0x0e46 }, /*               Thai_maiyamok ๆ THAI CHARACTER MAIYAMOK */
       -  { 0x0de7, 0x0e47 }, /*              Thai_maitaikhu ็ THAI CHARACTER MAITAIKHU */
       -  { 0x0de8, 0x0e48 }, /*                  Thai_maiek ่ THAI CHARACTER MAI EK */
       -  { 0x0de9, 0x0e49 }, /*                 Thai_maitho ้ THAI CHARACTER MAI THO */
       -  { 0x0dea, 0x0e4a }, /*                 Thai_maitri ๊ THAI CHARACTER MAI TRI */
       -  { 0x0deb, 0x0e4b }, /*            Thai_maichattawa ๋ THAI CHARACTER MAI CHATTAWA */
       -  { 0x0dec, 0x0e4c }, /*            Thai_thanthakhat ์ THAI CHARACTER THANTHAKHAT */
       -  { 0x0ded, 0x0e4d }, /*               Thai_nikhahit ํ THAI CHARACTER NIKHAHIT */
       -  { 0x0df0, 0x0e50 }, /*                 Thai_leksun ๐ THAI DIGIT ZERO */
       -  { 0x0df1, 0x0e51 }, /*                Thai_leknung ๑ THAI DIGIT ONE */
       -  { 0x0df2, 0x0e52 }, /*                Thai_leksong ๒ THAI DIGIT TWO */
       -  { 0x0df3, 0x0e53 }, /*                 Thai_leksam ๓ THAI DIGIT THREE */
       -  { 0x0df4, 0x0e54 }, /*                  Thai_leksi ๔ THAI DIGIT FOUR */
       -  { 0x0df5, 0x0e55 }, /*                  Thai_lekha ๕ THAI DIGIT FIVE */
       -  { 0x0df6, 0x0e56 }, /*                 Thai_lekhok ๖ THAI DIGIT SIX */
       -  { 0x0df7, 0x0e57 }, /*                Thai_lekchet ๗ THAI DIGIT SEVEN */
       -  { 0x0df8, 0x0e58 }, /*                Thai_lekpaet ๘ THAI DIGIT EIGHT */
       -  { 0x0df9, 0x0e59 }, /*                 Thai_lekkao ๙ THAI DIGIT NINE */
       -  { 0x0ea1, 0x3131 }, /*               Hangul_Kiyeog ㄱ HANGUL LETTER KIYEOK */
       -  { 0x0ea2, 0x3132 }, /*          Hangul_SsangKiyeog ㄲ HANGUL LETTER SSANGKIYEOK */
       -  { 0x0ea3, 0x3133 }, /*           Hangul_KiyeogSios ㄳ HANGUL LETTER KIYEOK-SIOS */
       -  { 0x0ea4, 0x3134 }, /*                Hangul_Nieun ㄴ HANGUL LETTER NIEUN */
       -  { 0x0ea5, 0x3135 }, /*           Hangul_NieunJieuj ㄵ HANGUL LETTER NIEUN-CIEUC */
       -  { 0x0ea6, 0x3136 }, /*           Hangul_NieunHieuh ㄶ HANGUL LETTER NIEUN-HIEUH */
       -  { 0x0ea7, 0x3137 }, /*               Hangul_Dikeud ㄷ HANGUL LETTER TIKEUT */
       -  { 0x0ea8, 0x3138 }, /*          Hangul_SsangDikeud ㄸ HANGUL LETTER SSANGTIKEUT */
       -  { 0x0ea9, 0x3139 }, /*                Hangul_Rieul ㄹ HANGUL LETTER RIEUL */
       -  { 0x0eaa, 0x313a }, /*          Hangul_RieulKiyeog ㄺ HANGUL LETTER RIEUL-KIYEOK */
       -  { 0x0eab, 0x313b }, /*           Hangul_RieulMieum ㄻ HANGUL LETTER RIEUL-MIEUM */
       -  { 0x0eac, 0x313c }, /*           Hangul_RieulPieub ㄼ HANGUL LETTER RIEUL-PIEUP */
       -  { 0x0ead, 0x313d }, /*            Hangul_RieulSios ㄽ HANGUL LETTER RIEUL-SIOS */
       -  { 0x0eae, 0x313e }, /*           Hangul_RieulTieut ㄾ HANGUL LETTER RIEUL-THIEUTH */
       -  { 0x0eaf, 0x313f }, /*          Hangul_RieulPhieuf ㄿ HANGUL LETTER RIEUL-PHIEUPH */
       -  { 0x0eb0, 0x3140 }, /*           Hangul_RieulHieuh ㅀ HANGUL LETTER RIEUL-HIEUH */
       -  { 0x0eb1, 0x3141 }, /*                Hangul_Mieum ㅁ HANGUL LETTER MIEUM */
       -  { 0x0eb2, 0x3142 }, /*                Hangul_Pieub ㅂ HANGUL LETTER PIEUP */
       -  { 0x0eb3, 0x3143 }, /*           Hangul_SsangPieub ㅃ HANGUL LETTER SSANGPIEUP */
       -  { 0x0eb4, 0x3144 }, /*            Hangul_PieubSios ㅄ HANGUL LETTER PIEUP-SIOS */
       -  { 0x0eb5, 0x3145 }, /*                 Hangul_Sios ㅅ HANGUL LETTER SIOS */
       -  { 0x0eb6, 0x3146 }, /*            Hangul_SsangSios ㅆ HANGUL LETTER SSANGSIOS */
       -  { 0x0eb7, 0x3147 }, /*                Hangul_Ieung ㅇ HANGUL LETTER IEUNG */
       -  { 0x0eb8, 0x3148 }, /*                Hangul_Jieuj ㅈ HANGUL LETTER CIEUC */
       -  { 0x0eb9, 0x3149 }, /*           Hangul_SsangJieuj ㅉ HANGUL LETTER SSANGCIEUC */
       -  { 0x0eba, 0x314a }, /*                Hangul_Cieuc ㅊ HANGUL LETTER CHIEUCH */
       -  { 0x0ebb, 0x314b }, /*               Hangul_Khieuq ㅋ HANGUL LETTER KHIEUKH */
       -  { 0x0ebc, 0x314c }, /*                Hangul_Tieut ㅌ HANGUL LETTER THIEUTH */
       -  { 0x0ebd, 0x314d }, /*               Hangul_Phieuf ㅍ HANGUL LETTER PHIEUPH */
       -  { 0x0ebe, 0x314e }, /*                Hangul_Hieuh ㅎ HANGUL LETTER HIEUH */
       -  { 0x0ebf, 0x314f }, /*                    Hangul_A ㅏ HANGUL LETTER A */
       -  { 0x0ec0, 0x3150 }, /*                   Hangul_AE ㅐ HANGUL LETTER AE */
       -  { 0x0ec1, 0x3151 }, /*                   Hangul_YA ㅑ HANGUL LETTER YA */
       -  { 0x0ec2, 0x3152 }, /*                  Hangul_YAE ㅒ HANGUL LETTER YAE */
       -  { 0x0ec3, 0x3153 }, /*                   Hangul_EO ㅓ HANGUL LETTER EO */
       -  { 0x0ec4, 0x3154 }, /*                    Hangul_E ㅔ HANGUL LETTER E */
       -  { 0x0ec5, 0x3155 }, /*                  Hangul_YEO ㅕ HANGUL LETTER YEO */
       -  { 0x0ec6, 0x3156 }, /*                   Hangul_YE ㅖ HANGUL LETTER YE */
       -  { 0x0ec7, 0x3157 }, /*                    Hangul_O ㅗ HANGUL LETTER O */
       -  { 0x0ec8, 0x3158 }, /*                   Hangul_WA ㅘ HANGUL LETTER WA */
       -  { 0x0ec9, 0x3159 }, /*                  Hangul_WAE ㅙ HANGUL LETTER WAE */
       -  { 0x0eca, 0x315a }, /*                   Hangul_OE ㅚ HANGUL LETTER OE */
       -  { 0x0ecb, 0x315b }, /*                   Hangul_YO ㅛ HANGUL LETTER YO */
       -  { 0x0ecc, 0x315c }, /*                    Hangul_U ㅜ HANGUL LETTER U */
       -  { 0x0ecd, 0x315d }, /*                  Hangul_WEO ㅝ HANGUL LETTER WEO */
       -  { 0x0ece, 0x315e }, /*                   Hangul_WE ㅞ HANGUL LETTER WE */
       -  { 0x0ecf, 0x315f }, /*                   Hangul_WI ㅟ HANGUL LETTER WI */
       -  { 0x0ed0, 0x3160 }, /*                   Hangul_YU ㅠ HANGUL LETTER YU */
       -  { 0x0ed1, 0x3161 }, /*                   Hangul_EU ㅡ HANGUL LETTER EU */
       -  { 0x0ed2, 0x3162 }, /*                   Hangul_YI ㅢ HANGUL LETTER YI */
       -  { 0x0ed3, 0x3163 }, /*                    Hangul_I ㅣ HANGUL LETTER I */
       -  { 0x0ed4, 0x11a8 }, /*             Hangul_J_Kiyeog ᆨ HANGUL JONGSEONG KIYEOK */
       -  { 0x0ed5, 0x11a9 }, /*        Hangul_J_SsangKiyeog ᆩ HANGUL JONGSEONG SSANGKIYEOK */
       -  { 0x0ed6, 0x11aa }, /*         Hangul_J_KiyeogSios ᆪ HANGUL JONGSEONG KIYEOK-SIOS */
       -  { 0x0ed7, 0x11ab }, /*              Hangul_J_Nieun ᆫ HANGUL JONGSEONG NIEUN */
       -  { 0x0ed8, 0x11ac }, /*         Hangul_J_NieunJieuj ᆬ HANGUL JONGSEONG NIEUN-CIEUC */
       -  { 0x0ed9, 0x11ad }, /*         Hangul_J_NieunHieuh ᆭ HANGUL JONGSEONG NIEUN-HIEUH */
       -  { 0x0eda, 0x11ae }, /*             Hangul_J_Dikeud ᆮ HANGUL JONGSEONG TIKEUT */
       -  { 0x0edb, 0x11af }, /*              Hangul_J_Rieul ᆯ HANGUL JONGSEONG RIEUL */
       -  { 0x0edc, 0x11b0 }, /*        Hangul_J_RieulKiyeog ᆰ HANGUL JONGSEONG RIEUL-KIYEOK */
       -  { 0x0edd, 0x11b1 }, /*         Hangul_J_RieulMieum ᆱ HANGUL JONGSEONG RIEUL-MIEUM */
       -  { 0x0ede, 0x11b2 }, /*         Hangul_J_RieulPieub ᆲ HANGUL JONGSEONG RIEUL-PIEUP */
       -  { 0x0edf, 0x11b3 }, /*          Hangul_J_RieulSios ᆳ HANGUL JONGSEONG RIEUL-SIOS */
       -  { 0x0ee0, 0x11b4 }, /*         Hangul_J_RieulTieut ᆴ HANGUL JONGSEONG RIEUL-THIEUTH */
       -  { 0x0ee1, 0x11b5 }, /*        Hangul_J_RieulPhieuf ᆵ HANGUL JONGSEONG RIEUL-PHIEUPH */
       -  { 0x0ee2, 0x11b6 }, /*         Hangul_J_RieulHieuh ᆶ HANGUL JONGSEONG RIEUL-HIEUH */
       -  { 0x0ee3, 0x11b7 }, /*              Hangul_J_Mieum ᆷ HANGUL JONGSEONG MIEUM */
       -  { 0x0ee4, 0x11b8 }, /*              Hangul_J_Pieub ᆸ HANGUL JONGSEONG PIEUP */
       -  { 0x0ee5, 0x11b9 }, /*          Hangul_J_PieubSios ᆹ HANGUL JONGSEONG PIEUP-SIOS */
       -  { 0x0ee6, 0x11ba }, /*               Hangul_J_Sios ᆺ HANGUL JONGSEONG SIOS */
       -  { 0x0ee7, 0x11bb }, /*          Hangul_J_SsangSios ᆻ HANGUL JONGSEONG SSANGSIOS */
       -  { 0x0ee8, 0x11bc }, /*              Hangul_J_Ieung ᆼ HANGUL JONGSEONG IEUNG */
       -  { 0x0ee9, 0x11bd }, /*              Hangul_J_Jieuj ᆽ HANGUL JONGSEONG CIEUC */
       -  { 0x0eea, 0x11be }, /*              Hangul_J_Cieuc ᆾ HANGUL JONGSEONG CHIEUCH */
       -  { 0x0eeb, 0x11bf }, /*             Hangul_J_Khieuq ᆿ HANGUL JONGSEONG KHIEUKH */
       -  { 0x0eec, 0x11c0 }, /*              Hangul_J_Tieut ᇀ HANGUL JONGSEONG THIEUTH */
       -  { 0x0eed, 0x11c1 }, /*             Hangul_J_Phieuf ᇁ HANGUL JONGSEONG PHIEUPH */
       -  { 0x0eee, 0x11c2 }, /*              Hangul_J_Hieuh ᇂ HANGUL JONGSEONG HIEUH */
       -  { 0x0eef, 0x316d }, /*     Hangul_RieulYeorinHieuh ㅭ HANGUL LETTER RIEUL-YEORINHIEUH */
       -  { 0x0ef0, 0x3171 }, /*    Hangul_SunkyeongeumMieum ㅱ HANGUL LETTER KAPYEOUNMIEUM */
       -  { 0x0ef1, 0x3178 }, /*    Hangul_SunkyeongeumPieub ㅸ HANGUL LETTER KAPYEOUNPIEUP */
       -  { 0x0ef2, 0x317f }, /*              Hangul_PanSios ㅿ HANGUL LETTER PANSIOS */
       -  { 0x0ef3, 0x3181 }, /*    Hangul_KkogjiDalrinIeung ㆁ HANGUL LETTER YESIEUNG */
       -  { 0x0ef4, 0x3184 }, /*   Hangul_SunkyeongeumPhieuf ㆄ HANGUL LETTER KAPYEOUNPHIEUPH */
       -  { 0x0ef5, 0x3186 }, /*          Hangul_YeorinHieuh ㆆ HANGUL LETTER YEORINHIEUH */
       -  { 0x0ef6, 0x318d }, /*                Hangul_AraeA ㆍ HANGUL LETTER ARAEA */
       -  { 0x0ef7, 0x318e }, /*               Hangul_AraeAE ㆎ HANGUL LETTER ARAEAE */
       -  { 0x0ef8, 0x11eb }, /*            Hangul_J_PanSios ᇫ HANGUL JONGSEONG PANSIOS */
       -  { 0x0ef9, 0x11f0 }, /*  Hangul_J_KkogjiDalrinIeung ᇰ HANGUL JONGSEONG YESIEUNG */
       -  { 0x0efa, 0x11f9 }, /*        Hangul_J_YeorinHieuh ᇹ HANGUL JONGSEONG YEORINHIEUH */
       -  { 0x0eff, 0x20a9 }, /*                  Korean_Won ₩ WON SIGN */
       -  { 0x13a4, 0x20ac }, /*                        Euro € EURO SIGN */
       -  { 0x13bc, 0x0152 }, /*                          OE Œ LATIN CAPITAL LIGATURE OE */
       -  { 0x13bd, 0x0153 }, /*                          oe œ LATIN SMALL LIGATURE OE */
       -  { 0x13be, 0x0178 }, /*                  Ydiaeresis Ÿ LATIN CAPITAL LETTER Y WITH DIAERESIS */
       -  { 0x20ac, 0x20ac }, /*                    EuroSign € EURO SIGN */
       -};
       -
       -VISIBLE
       -long _p9keysym2ucs(KeySym keysym)
       -{
       -    int min = 0;
       -    int max = sizeof(keysymtab) / sizeof(struct codepair) - 1;
       -    int mid;
       -
       -    /* first check for Latin-1 characters (1:1 mapping) */
       -    if ((keysym >= 0x0020 && keysym <= 0x007e) ||
       -        (keysym >= 0x00a0 && keysym <= 0x00ff))
       -        return keysym;
       -
       -    /* also check for directly encoded 24-bit UCS characters */
       -    if ((keysym & 0xff000000) == 0x01000000)
       -        return keysym & 0x00ffffff;
       -
       -    /* binary search in table */
       -    while (max >= min) {
       -        mid = (min + max) / 2;
       -        if (keysymtab[mid].keysym < keysym)
       -            min = mid + 1;
       -        else if (keysymtab[mid].keysym > keysym)
       -            max = mid - 1;
       -        else {
       -            /* found it */
       -            return keysymtab[mid].ucs;
       -        }
       -    }
       -
       -    /* no matching Unicode value found */
       -    return -1;
       -}
 (DIR) diff --git a/src/libdraw/x11-keysym2ucs.h b/src/libdraw/x11-keysym2ucs.h
       t@@ -1,9 +0,0 @@
       -/* $XFree86: xc/programs/xterm/keysym2ucs.h,v 1.1 1999/06/12 15:37:18 dawes Exp $ */
       -/*
       - * This module converts keysym values into the corresponding ISO 10646-1
       - * (UCS, Unicode) values.
       - */
       -
       -#include <X11/X.h>
       -
       -long _p9keysym2ucs(KeySym keysym);
 (DIR) diff --git a/src/libdraw/x11-load.c b/src/libdraw/x11-load.c
       t@@ -1,18 +0,0 @@
       -#include <u.h>
       -#include "x11-inc.h"
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -#include "x11-memdraw.h"
       -
       -int
       -loadmemimage(Memimage *i, Rectangle r, uchar *data, int ndata)
       -{
       -        int n;
       -
       -        n = _loadmemimage(i, r, data, ndata);
       -        if(n > 0 && i->X)
       -                _xputxdata(i, r);
       -        return n;
       -}
       -
 (DIR) diff --git a/src/libdraw/x11-memdraw.h b/src/libdraw/x11-memdraw.h
       t@@ -1,108 +0,0 @@
       -/*
       - * Structure pointed to by X field of Memimage
       - */
       -
       -typedef struct Xmem Xmem;
       -typedef struct Xprivate Xprivate;
       -
       -enum
       -{
       -        PMundef = ~0
       -};
       -
       -struct Xmem
       -{
       -        int                pixmap;        /* pixmap id */
       -        XImage                *xi;        /* local image */
       -        int                dirty;        /* is the X server ahead of us?  */
       -        Rectangle        dirtyr;        /* which pixels? */
       -        Rectangle        r;        /* size of image */
       -};
       -
       -struct Xprivate {
       -        u32int                chan;
       -        XColormap        cmap;
       -        XCursor                cursor;
       -        XDisplay        *display;
       -        int                depth;                                /* of screen */
       -        XDrawable        drawable;
       -        XColor                map[256];
       -        XColor                map7[128];
       -        uchar                map7to8[128][2];
       -        XGC                gccopy;
       -        XGC                gccopy0;
       -        XGC                gcfill;
       -        u32int                gcfillcolor;
       -        XGC                gcfill0;
       -        u32int                gcfill0color;
       -        XGC                gcreplsrc;
       -        u32int                gcreplsrctile;
       -        XGC                gcreplsrc0;
       -        u32int                gcreplsrc0tile;
       -        XGC                gcsimplesrc;
       -        u32int                gcsimplesrccolor;
       -        u32int                gcsimplesrcpixmap;
       -        XGC                gcsimplesrc0;
       -        u32int                gcsimplesrc0color;
       -        u32int                gcsimplesrc0pixmap;
       -        XGC                gczero;
       -        u32int                gczeropixmap;
       -        XGC                gczero0;
       -        u32int                gczero0pixmap;
       -        XDisplay        *kbdcon;
       -        XDisplay        *mousecon;
       -        Rectangle        newscreenr;
       -        Memimage*        screenimage;
       -        QLock                screenlock;
       -        XDrawable        screenpm;
       -        XDrawable        nextscreenpm;
       -        Rectangle        screenr;
       -        XDisplay        *snarfcon;
       -        int                toplan9[256];
       -        int                tox11[256];
       -        int                usetable;
       -        XVisual                *vis;
       -        Atom                clipboard;
       -        Atom                utf8string;
       -        Atom                targets;
       -        Atom                text;
       -        Atom                compoundtext;
       -        Atom                takefocus;
       -        Atom                losefocus;
       -        Atom                wmprotos;
       -        uint                putsnarf;
       -        uint                assertsnarf;
       -        int                destroyed;
       -};
       -
       -extern Xprivate _x;
       -
       -extern Memimage *_xallocmemimage(Rectangle, u32int, int);
       -extern XImage        *_xallocxdata(Memimage*, Rectangle);
       -extern void        _xdirtyxdata(Memimage*, Rectangle);
       -extern void        _xfillcolor(Memimage*, Rectangle, u32int);
       -extern void        _xfreexdata(Memimage*);
       -extern XImage        *_xgetxdata(Memimage*, Rectangle);
       -extern void        _xputxdata(Memimage*, Rectangle);
       -extern void        _initdisplaymemimage(Display*, Memimage*);
       -
       -struct Mouse;
       -extern int        _xtoplan9mouse(XDisplay*, XEvent*, struct Mouse*);
       -extern int        _xtoplan9kbd(XEvent*);
       -extern void        _xexpose(XEvent*, XDisplay*);
       -extern int        _xselect(XEvent*, XDisplay*);
       -extern int        _xconfigure(XEvent*, XDisplay*);
       -extern int        _xdestroy(XEvent*, XDisplay*);
       -extern void        _flushmemscreen(Rectangle);
       -extern void        _xmoveto(Point);
       -struct Cursor;
       -extern void        _xsetcursor(struct Cursor*);
       -
       -#define MouseMask (\
       -        ButtonPressMask|\
       -        ButtonReleaseMask|\
       -        PointerMotionMask|\
       -        Button1MotionMask|\
       -        Button2MotionMask|\
       -        Button3MotionMask)
       -
 (DIR) diff --git a/src/libdraw/x11-mouse.c b/src/libdraw/x11-mouse.c
       t@@ -1,221 +0,0 @@
       -#include <u.h>
       -#include "x11-inc.h"
       -#include <libc.h>
       -#include <draw.h>
       -#include <thread.h>
       -#include <cursor.h>
       -#include <mouse.h>
       -#include <memdraw.h>
       -#include "x11-memdraw.h"
       -
       -int _windowhasfocus = 1;
       -int _wantfocuschanges;
       -
       -void
       -moveto(Mousectl *m, Point pt)
       -{
       -        _xmoveto(pt);
       -}
       -
       -void
       -closemouse(Mousectl *mc)
       -{
       -        if(mc == nil)
       -                return;
       -
       -/*        postnote(PNPROC, mc->pid, "kill");
       -*/
       -        do; while(nbrecv(mc->c, &mc->m) > 0);
       -        close(mc->mfd);
       -        close(mc->cfd);
       -        free(mc->file);
       -        chanfree(mc->c);
       -        chanfree(mc->resizec);
       -        free(mc);
       -}
       -
       -int
       -readmouse(Mousectl *mc)
       -{
       -        if(mc->display)
       -                flushimage(mc->display, 1);
       -        if(recv(mc->c, &mc->m) < 0){
       -                fprint(2, "readmouse: %r\n");
       -                return -1;
       -        }
       -        return 0;
       -}
       -
       -/*
       - * This is necessary because some X libraries (e.g., on FC3)
       - * use an inordinate amount of stack space to do _xsetcursor.
       - * Perhaps instead there should be a generic "run this X routine"
       - * stack that you send a function and argument to.
       - */
       -static
       -void
       -_cursorproc(void *arg)
       -{
       -        Mousectl *mc;
       -        Cursor *c;
       -        
       -        mc = arg;
       -        threadsetname("cursorproc (sigh)");
       -        for(;;){
       -                c = recvp(mc->ccursor);
       -                _xsetcursor(c);
       -                sendp(mc->ccursorwait, nil);
       -        }
       -}
       -
       -static
       -void
       -_ioproc(void *arg)
       -{
       -        int fd, one, buttons;
       -        Atom a;
       -        ulong mask;
       -        Mouse m;
       -        Mousectl *mc;
       -        XEvent xevent;
       -
       -        one = 1;
       -        mc = arg;
       -        threadsetname("mouseproc");
       -        memset(&m, 0, sizeof m);
       -        mc->pid = getpid();
       -        mask = MouseMask|ExposureMask|StructureNotifyMask;
       -        XSelectInput(_x.mousecon, _x.drawable, mask);
       -        fd = XConnectionNumber(_x.mousecon);
       -        buttons = 0;
       -        for(;;){
       -                XNextEvent(_x.mousecon, &xevent);
       -                switch(xevent.type){
       -                case Expose:
       -                        _xexpose(&xevent, _x.mousecon);
       -                        continue;
       -                case DestroyNotify:
       -                        if(_xdestroy(&xevent, _x.mousecon)){
       -                                /* drain it before sending */
       -                                /* apps that care can notice we sent a 0 */
       -                                /* otherwise we'll have getwindow send SIGHUP */
       -                                nbrecv(mc->resizec, 0);
       -                                nbrecv(mc->resizec, 0);
       -                                send(mc->resizec, 0);
       -                        }
       -                        continue;
       -                case ConfigureNotify:
       -                        if(_xconfigure(&xevent, _x.mousecon))
       -                                nbsend(mc->resizec, &one);
       -                        continue;
       -                case SelectionRequest:
       -                        _xselect(&xevent, _x.mousecon);
       -                        continue;
       -                case ButtonPress:
       -                case ButtonRelease:
       -                case MotionNotify:
       -                        /* If the motion notifications are backing up, skip over some. */
       -                        if(0 && xevent.type == MotionNotify){
       -                                while(XCheckWindowEvent(_x.mousecon, _x.drawable, MouseMask, &xevent)){
       -                                        if(xevent.type != MotionNotify)
       -                                                break;
       -                                }
       -                        }
       -                        m.buttons = buttons;
       -                        if(_xtoplan9mouse(_x.mousecon, &xevent, &m) < 0)
       -                                continue;
       -                        buttons = m.buttons;
       -                        send(mc->c, &m);
       -                        /*
       -                         * mc->Mouse is updated after send so it doesn't have wrong value if we block during send.
       -                         * This means that programs should receive into mc->Mouse (see readmouse() above) if
       -                         * they want full synchrony.
       -                         */
       -                        mc->m = m;
       -                        break;
       -                case ClientMessage:
       -                        if(xevent.xclient.message_type == _x.wmprotos){
       -                                a = xevent.xclient.data.l[0];
       -                                if(_wantfocuschanges && a == _x.takefocus){
       -                                        _windowhasfocus = 1;
       -                                        _x.newscreenr = _x.screenr;
       -                                        nbsend(mc->resizec, &one);
       -                                }else if(_wantfocuschanges && a == _x.losefocus){
       -                                        _windowhasfocus = 0;
       -                                        _x.newscreenr = _x.screenr;
       -                                        nbsend(mc->resizec, &one);
       -                                }
       -                        }
       -                        break;
       -                }
       -        }
       -}
       -
       -Mousectl*
       -initmouse(char *file, Image *i)
       -{
       -        Mousectl *mc;
       -
       -        mc = mallocz(sizeof(Mousectl), 1);
       -        if(i)
       -                mc->display = i->display;
       -        mc->c = chancreate(sizeof(Mouse), 0);
       -        chansetname(mc->c, "mousec");
       -        mc->resizec = chancreate(sizeof(int), 2);
       -        chansetname(mc->resizec, "resizec");
       -        mc->ccursor = chancreate(sizeof(void*), 0);
       -        chansetname(mc->ccursor, "ccursor");
       -        mc->ccursorwait = chancreate(sizeof(void*), 0);
       -        chansetname(mc->ccursor, "ccursorwait");
       -        proccreate(_ioproc, mc, 256*1024);
       -        proccreate(_cursorproc, mc, 256*1024);        /* sigh */
       -        return mc;
       -}
       -
       -void
       -setcursor(Mousectl *mc, Cursor *c)
       -{
       -        qlock(&mc->cursorlock);
       -        sendp(mc->ccursor, c);
       -        recvp(mc->ccursorwait);
       -        qunlock(&mc->cursorlock);
       -}
       -
       -/*
       - * Send the mouse event back to the window manager.
       - * So that 9term can tell rio to pop up its button3 menu.
       - * Note that we're using _x.mousecon in a few places,
       - * so we have to be sure that the mouse proc isn't using it
       - * when we call!  This is all a bit wonky and should be 
       - * avoided unless you know what you're doing.
       - */
       -void
       -bouncemouse(Mouse *m)
       -{
       -        XButtonEvent e;
       -        XWindow dw;
       -
       -        e.type = ButtonPress;
       -        e.state = 0;
       -        e.button = 0;
       -        if(m->buttons&1)
       -                e.button = 1;
       -        else if(m->buttons&2)
       -                e.button = 2;
       -        else if(m->buttons&4)
       -                e.button = 3;
       -        e.same_screen = 1;
       -        XTranslateCoordinates(_x.display, _x.drawable,
       -                DefaultRootWindow(_x.display),
       -                m->xy.x, m->xy.y, &e.x_root, &e.y_root, &dw);
       -        e.root = DefaultRootWindow(_x.mousecon);
       -        e.window = e.root;
       -        e.subwindow = None;
       -        e.x = e.x_root;
       -        e.y = e.y_root;
       -#undef time
       -        e.time = CurrentTime;
       -        XUngrabPointer(_x.mousecon, m->msec);
       -        XSendEvent(_x.mousecon, e.root, True, ButtonPressMask, (XEvent*)&e);
       -        XFlush(_x.mousecon);
       -}
 (DIR) diff --git a/src/libdraw/x11-pixelbits.c b/src/libdraw/x11-pixelbits.c
       t@@ -1,16 +0,0 @@
       -#include <u.h>
       -#include "x11-inc.h"
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -#include "x11-memdraw.h"
       -
       -u32int
       -pixelbits(Memimage *m, Point p)
       -{
       -        if(m->X)
       -                _xgetxdata(m, Rect(p.x, p.y, p.x+1, p.y+1));
       -        return _pixelbits(m, p);
       -}
       -
       -
 (DIR) diff --git a/src/libdraw/x11-unload.c b/src/libdraw/x11-unload.c
       t@@ -1,15 +0,0 @@
       -#include <u.h>
       -#include "x11-inc.h"
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -#include "x11-memdraw.h"
       -
       -int
       -unloadmemimage(Memimage *i, Rectangle r, uchar *data, int ndata)
       -{
       -        if(i->X)
       -                _xgetxdata(i, r);
       -        return _unloadmemimage(i, r, data, ndata);
       -}
       -
 (DIR) diff --git a/src/libdraw/x11-wsys.c b/src/libdraw/x11-wsys.c
       t@@ -1,41 +0,0 @@
       -#include <u.h>
       -#include "x11-inc.h"
       -#include <libc.h>
       -#include <draw.h>
       -#include <memdraw.h>
       -#include "x11-memdraw.h"
       -
       -void
       -drawtopwindow(void)
       -{
       -        XMapRaised(_x.display, _x.drawable);
       -        XFlush(_x.display);
       -        /*
       -         * Should not be using kbdcon since we're not running
       -         * in the kbdproc, but this is necessary to make the keyboard
       -         * take focus if the window is hidden when drawtopwindow
       -         * is called.  Let's hope that XSetInputFocus is only a write 
       -         * on the fd, and so it's okay to do even though the kbdproc
       -         * is reading at the same time.
       -         */
       -        XSetInputFocus(_x.kbdcon, _x.drawable, RevertToPointerRoot,
       -                CurrentTime);
       -        XFlush(_x.kbdcon);
       -}
       -
       -void
       -drawresizewindow(Rectangle r)
       -{
       -/*        XConfigureRequestEvent e; */
       -        XWindowChanges e;
       -        int value_mask;
       -
       -        memset(&e, 0, sizeof e);
       -        value_mask = CWWidth|CWHeight;
       -/*        e.x = r.min.x; */
       -/*        e.y = r.min.y; */
       -        e.width = Dx(r);
       -        e.height = Dy(r);
       -        XConfigureWindow(_x.display, _x.drawable, value_mask, &e);
       -        XFlush(_x.display);
       -}