Mark H Weaver <m...@netris.org> writes: > Mike Gran <spk...@yahoo.com> wrote: >>> Right now it seems that zero-length shared substring of a wide string is >>> wide. A zero-length substring still shares the stringbuf of the >>> original string. >> [...] >>> What do you think about that? Do zero-length substrings need to >>> still share stringbufs with their parent strings? > > I wrote: >> I think the answer is: no they don't, and avoiding that might be a >> worthwhile optimization, mainly to avoid needlessly holding a reference >> to a potentially large stringbuf. > > I went ahead and committed this optimization. Empty substrings are now > always freshly allocated, and never hold a reference to the original > stringbuf.
Why would they need an allocation at all? They don't contain characters. -- David Kastrup
