[bug #27031] grep -w Operates on word level and crashes for LANG != C

[Flemming Madsen]

URL:
  <http://savannah.gnu.org/bugs/?27031>

                 Summary: grep -w Operates on word level and crashes for LANG
!= C
                 Project: grep
            Submitted by: themadsens
            Submitted on: Wed 15 Jul 2009 07:41:43 AM GMT
                Category: None
                Severity: 3 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any

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Details:

Using the -w option causes grep to select its output on word level rather
than causing the match engine to work on word level. Also it seems that
mathces in the fist line causes crashes. LANG=C fixes all this.

$> echo -e 'the quick brown fox jumped over the lazy dog\nline 2' 
the quick brown fox jumped over the lazy dog
line 2
$> echo -e 'the quick brown fox jumped over the lazy dog\nline 2' | grep -w
line
line$> 
$> 
$> echo -e 'the quick brown fox jumped over the lazy dog\nline 2' | grep -v
-w line
the quick brown fox jumped over the lazy dog
 2
$> echo -e 'the quick brown fox jumped over the lazy dog\nline 2' | grep -w
fox
fox$> 
$> echo -e 'the quick brown fox jumped over the lazy dog\nline 2' | grep -v
-w fox
Segmentation fault
$> 
$> echo -e 'the quick brown fox jumped over the lazy dog\nline 2' | LANG=C
grep -v -w fox
line 2
$> echo -e 'the quick brown fox jumped over the lazy dog\nline 2' | LANG=C
grep  -w fox
the quick brown fox jumped over the lazy dog
$> 





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