bug#62267: grep-3.9 bug: \d matches multibyte digits

[Paul Eggert]

Thanks for looking into this. A couple of questions.

First, some documentation issues. Why is PCRE2 incompatible with Perl on 
this issue? Are there other areas where the two are incompatible? Are 
these incompatibilities documented anywhere? Is the goal for 'grep -P' 
to be compatible with Perl, not with PCRE2?

Second, although that patch focuses on \d, doesn't \D have a similar 
problem and shouldn't it be fixed too?

(OK, that was more than two questions. :-)