Re: [PATCH v2] grep: correctly identify utf-8 characters with \{b,w} in -P

Ævar Arnfjörð Bjarmason [off-list ref] writes:

But I don't think it's safe to change the default behavior "git-grep",
it's not a mere bug fix, but a major behavior change for existing users
of grep.patternType=perl.
...
Even for Perl, this behavior has been troublesome. Opinions differ, but
I think many would agree (and I've CC'd the main authority on Perl's
regex engine) that doing this by default was *probably* a mistake.
...
As the example at the start shows you can already do this with "(*UCP)"
in the pattern, so perhaps we should just link to the pcre2pattern(3)
manual from git-grep(1)?

So, now do we have a final verdict on this patch?  If we are not
taking the "unconditonally enable ucp" patch (which I tend to agree
with a safer choice for now), it may make sense to mention (*UCP) in
our documentation somewhere, perhaps?