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Date: | Fri, 28 Jul 2006 15:05:02 -0400 |
From: | Christopher Faylor <cgf-no-personal-reply-please AT cygwin DOT com> |
To: | cygwin AT cygwin DOT com |
Subject: | Re: Problem with grep -Fwf (version 2.5.1a-1 and 2.5.1a-2) |
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On Fri, Jul 28, 2006 at 01:53:32PM -0400, Daniel Einspanjer wrote: >Using the following files both of which had dos2unix run on them to be sure >there were no line-ending issues: > >===== data.txt ======= >abc >defghi ^ >====================== > >===== filter.txt ===== >abc >deghi >====================== > >These commands work as expected: >$ fgrep -f filter.txt data.txt >$ tail -1 data.txt | fgrep -wf filter.txt > >But this command fails to return ghi: >$ fgrep -wf filter.txt data.txt >So it seems that after a match is discarded because it is not a full word >(due to the -w flag), subsequent full word matches are also discarded. Maybe it's a typo in your simplified test case but fgrep -w shouldn't match defghi since the input is deghi. >I've tested this with the grep 2.5.1 installed on a recent Gentoo GNU/Linux >machine and it behaves properly so I am guessing it might be a problem >specific to the cygwin port. I tried this test on Cygwin, Gentoo, and FC5 and got consistent results on all. If I remove the 'f' in defghi from data.txt then it also works consistently on all three systems, i.e., it returns: abc deghi cgf -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
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