Re: grep: fix multibyte regex handling under macOS (1819ad327b7a1f19540a819813b70a0e8a7f798f)

["D. Ben Knoble" <ben.knoble@gmail.com>]

On Sat, Feb 4, 2023 at 6:32 AM demerphq <demerphq@gmail.com> wrote:
> I think that if you look at other broadly ported projects there is
> evidence that owning your own dependencies makes a project easier and
> cheaper to port to new platforms. […] No doubt there
> are many other long running projects with precedents in this area.
> What does Vi or Vim do? What does Emacs do? Etc.

Vi and Vim have their own pattern language descended from Ed. They
thus have their own implementation for it. (Vim's has at least two
different "engines" powering the same syntax, and tries to
automatically pick the best one in case; I'm not sure if Vim compiles
the patterns before using them.) The advantage is that, as has been
pointed out, you can rely on Vi or Vim patterns.

…

Any thoughts on some sort of stop-gap measure to fix --word-diff while
Git decides how to handle the regex engine incompatibilities? How
important is the sequence of bytes at the end of --word-diff regexes
in userdiff.c?

-- 
D. Ben Knoble