> candidate for fixes-1.7.1?

Yes, I think so.

> Without studying the entire source, it looks like its not checking the
> length of the string.

That's fine, as it's xmalloc'ed correctly in the beginning of if-block.

If I read the bit cryptic path simplifier correctly, the original source:

 > *p = '\0';
 > sprintf(p0, "%s:%s", p0, c);

...might also be written as:

 > sprintf(p, ":%s", c);

...which will save couple of bytes. I did not test this though.
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