Bug 156105 - grep -Fw matches non-word
grep -Fw matches non-word
Product: Fedora
Classification: Fedora
Component: grep (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Tim Waugh
Mike McLean
Depends On:
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Reported: 2005-04-27 12:26 EDT by Gordon Lack
Modified: 2007-11-30 17:11 EST (History)
0 users

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Doc Type: Bug Fix
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Last Closed: 2005-04-27 12:59:33 EDT
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Description Gordon Lack 2005-04-27 12:26:07 EDT
Description of problem:

  grep -Fw may find an incorrect match

Version-Release number of selected component (if applicable):


How reproducible:

   Every time.

Steps to Reproduce:
   Run grep -fW with 2 words to match, one which matches the end of a word and
the other teh start of the same word. But neither matches a whole word (well,
that seems to be the requirement).
Actual results:

   grep reports a match:

Expected results:

   grep should not report a match

Additional info:
   A specific example for grep built from the source rpm, with all patches applied.

my-system*[1] echo "LIN7C 55327" | ../grep-2.5.1a/src/grep -wF -e 5327 -e 5532 
LIN7C 55327

   This is grep-specific rather than FC3-specific.  Compiling the same code on
an Irix system produces the same error.
Comment 1 Tim Waugh 2005-04-27 12:59:33 EDT
Confirmed with 2.5.1-31.4.

This works fine in 2.5.1-48 from rawhide (Fedora Core development).

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