[Bug 271906] Aparent performance problem with basic and extended regular expressions

From: <bugzilla-noreply_at_freebsd.org>
Date: Thu, 08 Jun 2023 14:14:48 UTC

--- Comment #1 from Yuri Pankov <yuripv@FreeBSD.org> ---
It's not a regression in regex implementation per se and rather a switch from
(very outdated) gnu grep which used bundled libgnuregex to bsdgrep which is
using in-base regex implementation.

See also bug 223553, bug 254763, bug 255525.

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