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Don't create an undo-chain entry for a move with no effect.
[sgt/puzzles]
/
windows.c
diff --git
a/windows.c
b/windows.c
index
2f1a6f0
..
82767e4
100644
(file)
--- a/
windows.c
+++ b/
windows.c
@@
-84,7
+84,7
@@
void debug_printf(char *fmt, ...)
va_list ap;
va_start(ap, fmt);
-
vsprintf(buf
, fmt, ap);
+
_vsnprintf(buf, 4095
, fmt, ap);
dputs(buf);
va_end(ap);
}