[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

bug#21670: surprising bug in grep -e with anchors

From: Paul Eggert
Subject: bug#21670: surprising bug in grep -e with anchors
Date: Sun, 11 Oct 2015 21:34:05 -0700
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0

greg boyd wrote:
test case (single line)

grep does not find the line with grep -e '^hello'  nor with grep -e 'hello$'
however, the line is output with
grep -e '^hello' -e 'hello$'

Oooo, that's a good one. Give your student extra credit! As it happens, the bug was recently fixed by this patch by Norihiro Tanaka:


and the fix should appear in the next grep release. However, since the patch was supposed to affect only performance, it appears that the bug fix was due to luck, and I'm taking the liberty of adding your student's test case by installing the attached further patch, to help prevent this bug from coming back in a future version.

Attachment: 0001-tests-add-test-case-for-Bug-21670.patch
Description: Text document

reply via email to

[Prev in Thread] Current Thread [Next in Thread]