Remove dmenumon variable - dwm - dynamic window manager
 (HTM) git clone git://git.suckless.org/dwm
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       ---
 (DIR) commit c2b748e7931e5f28984efc236f9b1a212dbc65e8
 (DIR) parent 84d7322113c2bf023f5eaa8537fb0e72d4105046
 (HTM) Author: Stein <bakkeby@gmail.com>
       Date:   Fri, 26 Aug 2022 14:48:46 +0200
       
       Remove dmenumon variable
       
       Reasoning: Since 2011 dmenu has been capable of working out which
       monitor currently has focus in a Xinerama setup, making the use
       of the -m flag more or less redundant.
       
       This is easily demonstrated by using dmenu in any other window
       manager.
       
       There used to be a nodmenu patch that provided these changes:
       https://git.suckless.org/sites/commit/ed68e3629de4ef2ca2d3f8893a79fb570b4c0cbc.html
       
       but this was removed on the basis that it was very easy to work
       out and apply manually if needed.
       
       The proposal here is to remove this dependency from dwm. The
       mechanism of the dmenumon variable could be provided via a patch
       if need be.
       
       The edge case scenario that dmenu does not handle on its own, and
       the effect of removing this mechanism, is that if the user trigger
       focusmon via keybindings to change focus to another monitor that
       has no clients, then dmenu will open on the monitor containing the
       window with input focus (or the monitor with the mouse cursor if
       no windows have input focus).
       
       If this edge case is important to cover then this can be addressed
       by setting input focus to selmon->barwin in the focus function if
       there is no client to give focus to (rather than giving focus back
       to the root window).
       
       Diffstat:
         M config.def.h                        |       3 +--
         M dwm.c                               |       2 --
       
       2 files changed, 1 insertion(+), 4 deletions(-)
       ---
 (DIR) diff --git a/config.def.h b/config.def.h
       @@ -56,8 +56,7 @@ static const Layout layouts[] = {
        #define SHCMD(cmd) { .v = (const char*[]){ "/bin/sh", "-c", cmd, NULL } }
        
        /* commands */
       -static char dmenumon[2] = "0"; /* component of dmenucmd, manipulated in spawn() */
       -static const char *dmenucmd[] = { "dmenu_run", "-m", dmenumon, "-fn", dmenufont, "-nb", col_gray1, "-nf", col_gray3, "-sb", col_cyan, "-sf", col_gray4, NULL };
       +static const char *dmenucmd[] = { "dmenu_run", "-fn", dmenufont, "-nb", col_gray1, "-nf", col_gray3, "-sb", col_cyan, "-sf", col_gray4, NULL };
        static const char *termcmd[]  = { "st", NULL };
        
        static const Key keys[] = {
 (DIR) diff --git a/dwm.c b/dwm.c
       @@ -1639,8 +1639,6 @@ sigchld(int unused)
        void
        spawn(const Arg *arg)
        {
       -        if (arg->v == dmenucmd)
       -                dmenumon[0] = '0' + selmon->num;
                if (fork() == 0) {
                        if (dpy)
                                close(ConnectionNumber(dpy));