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From: "vincent-srcware at vinc17 dot net"
 <sourceware-bugzilla@sourceware.org>
To: glibc-bugs-regex@sourceware.org
Subject: [Bug regex/11053] Wrong results with backreferences
Date: Tue, 06 Sep 2022 02:47:38 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D11053

--- Comment #16 from Vincent Lef=C3=A8vre <vincent-srcware at vinc17 dot ne=
t> ---
(In reply to eggert from comment #15)
> glibc bug 11053 is fixed,

Shouldn't this bug be resolved as fixed, then?

> but Debian bug 884075 is not fixed. Perhaps a better match for=20
> Debian bug 884075 is glibc bug 10844.

It seems different. With Debian bug 884075, the "|^1?$" part is important (=
it
yields the incorrect output, even though this part isn't matched), and ther=
e is
nothing like that in glibc bug 10844:

vinc17@gcc92:~$ echo 11111111111 | grep --color=3Dauto -E '^(11+)\1+$|^1?$'
11111111111
vinc17@gcc92:~$ echo 11111111111 | grep --color=3Dauto -E '^(11+)\1+$'
vinc17@gcc92:~$=20

Note that for the first command, nothing is colored in "11111111111", i.e. =
the
line is output as appeared to be matched, but no matches are shown by color=
s.
As a comparison, with ten 1s instead of eleven, the line is output and the =
ten
1s are colored.

--=20
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