Hi,

this patch fixes the issue, but other platforms' kbd.c files must be
corrected too. I'm only using arm.

adr
--- /n/sources/plan9/sys/src/9/omap/kbd.c       Mon Mar 17 16:50:34 2014
+++ /sys/src/9/omap/kbd.c       Sat Feb 11 23:59:45 2023
@@ -208,7 +208,7 @@
        int     shift;
        int     collecting;
        int     nk;
-       Rune    kc[5];
+       Rune    kc[UTFmax*2+1];
        int     buttons;
  };

--- /n/sources/plan9/sys/src/9/port/latin1.c    Tue Apr 30 16:05:23 2013
+++ /sys/src/9/port/latin1.c    Sun Feb 12 00:09:27 2023
@@ -20,7 +20,7 @@
  long
  unicode(Rune *k, int n)
  {
-       long c;
+       ulong c;
        Rune *r;

        c = 0;
@@ -35,6 +35,8 @@
                else
                        return -1;
        }
+       if(c > 0x10ffff)
+               return -1;
        return c;
  }

@@ -59,7 +61,7 @@
                if(n>=UTFmax*2+1)
                        return unicode(k, UTFmax*2+1);
                else
-                       return -(UTFmax+1);
+                       return -(UTFmax*2+1);
        for(l=latintab; l->ld!=0; l++)
                if(k[0] == l->ld[0]){
                        if(n == 1)
------------------------------------------
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