tReplace character with U+FFFD if wcwidth() is -1 - st - [fork] customized build of st, the simple terminal
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       ---
 (DIR) commit 11625c7166b7e4dad414606227acec2de1c36464
 (DIR) parent 008aae541b5cb1e67a025048adef9a06eaa11c2e
 (HTM) Author: czarkoff@gmail.com <czarkoff@gmail.com>
       Date:   Tue, 28 Oct 2014 12:55:28 +0100
       
       Replace character with U+FFFD if wcwidth() is -1
       
       Helpful when new Unicode codepoints are not recognized by libc.
       
       Diffstat:
         M st.c                                |       5 ++++-
       
       1 file changed, 4 insertions(+), 1 deletion(-)
       ---
 (DIR) diff --git a/st.c b/st.c
       t@@ -2576,7 +2576,10 @@ tputc(char *c, int len) {
                        unicodep = ascii = *c;
                } else {
                        utf8decode(c, &unicodep, UTF_SIZ);
       -                width = wcwidth(unicodep);
       +                if ((width = wcwidth(unicodep)) == -1) {
       +                        c = "\357\277\275";        /* UTF_INVALID */
       +                        width = 1;
       +                }
                        control = ISCONTROLC1(unicodep);
                        ascii = unicodep;
                }