[debbugs-tracker] bug#25655: closed (grep-2.28 is broken with multiple -e patterns)

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Your message dated Wed, 8 Feb 2017 13:04:25 -0800
with message-id <address@hidden>
and subject line Re: bug#25655: grep-2.28 is broken with multiple -e patterns
has caused the debbugs.gnu.org bug report #25655,
regarding grep-2.28 is broken with multiple -e patterns
to be marked as done.

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25655: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=25655
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--- Begin Message --- Subject: grep-2.28 is broken with multiple -e patterns Date: Wed, 8 Feb 2017 20:49:35 +0100

Hi,

we got a bug report a Gentoo [1] that grep-2.28 is broken when
searching for multiple patterns with -e:

grep-2.27:

  % echo ".tar" | grep -e "\.tar"; echo $?           
  .tar
  0

  % echo ".tar" | grep -e "\.tar" -e "\.tbz"; echo $?
  .tar
  0


grep-2.28:

   % echo ".tar" | grep -e "\.tar"; echo $?           
   .tar
   0

   % echo ".tar" | grep -e "\.tar" -e "\.tbz"; echo $?
   1


But this seems to be not the only issue:


echo "atbz" | grep -e "\.tar" -e ".tbz"

is matching "atbz"

echo ".tbz" | grep -e "\.tar" -e ".tbz"

matches ".tbz"

but

echo ".tar" | grep -e "\.tar" -e "tar"

only matches "ta".


We've identified commit 290ca116c9172d97b2b026951fac722d3bd3ced9 as the
one that introduced this regression

Kind regards
Lars

[1] https://bugs.gentoo.org/608644

-- 
Lars Wendler
Gentoo package maintainer
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Attention! New gpg key! See
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--- End Message ---

--- Begin Message --- Subject: Re: bug#25655: grep-2.28 is broken with multiple -e patterns Date: Wed, 8 Feb 2017 13:04:25 -0800 User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.7.0 Thanks for reporting that. It's a reasonably serious bug. I installed the attached patch to fix it.

0001-grep-do-not-mishandle-.-in-multiple-patterns.patch
Description: Source code patch

--- End Message ---