bug#44351: Bug in grep v3.2 onwards in regular expression matching

[Jim Meyering]

On Sun, Nov 1, 2020 at 12:42 AM Norihiro Tanaka <noritnk@kcn.ne.jp> wrote:
> Example,
>
>   a+a+a
>   1 2 3
>
> position 1 has a repetition of "a" and other transition with "a".
> position 2 has a repetition of "a" and other transition with "a", too.
> Then DFA was merging the two nodes, but it is wrong.
>
> Now similar nodes in series are not merged.

Thank you for the quick work.
Would you please send a revised test patch? That one appears to be a
tiny delta added to a file that only you have locally. I.e., it
requires the new file tests/ere.tests, with 200+ lines.