This patch solves several problems:
1/ Limit the number of characters written (to outbuf) to OUTBUF_SIZE-1
(-1 for the null-terminator).
2/ Always null-terminate outbuf at q.
3/ Move the "rightward" checks *before* the strcpy() calls.
4/ Avoid an integer overflow in these checks (e.g., rightward-4).
d31f5eb545