... nlen = nend - ntail; memcpy (nbeg, ntail, nlen); nbeg[nlen] = '\0';
return name; ... [nbeg, nbeg+nlen) and [ntail, ntail+nlen) can overlap, so this code should use memmove. I'm pretty sure this explains why sometimes using PROMPT_DIRTRIM will give me a prompt with the last few components smeared over the rest of the string: /home/mattdr$ echo $PROMPT_DIRTRIM 6 /home/mattdr$ echo $PS1 \w$ /home/mattdr$ cd alpha/beta/gamma/delta/epsilon/zeta/eta/theta/iota/ ...eta/iotapsilon/zeta/eta/theta/iota$ pwd /home/mattdr/alpha/beta/gamma/delta/epsilon/zeta/eta/theta/iota Note the prompt includes two instances of "iota" but the path only includes one.
