buggrep - Bugs: bug #17454, Man page should describe...

 
 

You are not allowed to post comments on this tracker with your current authentication level.

bug #17454: Man page should describe parentheses

Submitted by:  Tim Waugh <twaugh>
Submitted on:  Thu 17 Aug 2006 10:25:06 AM UTC  
 
Category:  None Severity:  3 - Normal
Item Group:  None Status:  Fixed
Privacy:  Public Assigned to:  None
Open/Closed:  Closed

Tue 22 Dec 2009 09:16:21 AM UTC, comment #1: 

   Precedence
       Repetition takes precedence over concatenation,  which  in  turn  takes
       precedence  over  alternation.   A  whole expression may be enclosed in
       parentheses  to  override   these   precedence   rules   and   form   a
       subexpression.

   Back References and Subexpressions
       The back-reference \n, where n is a single digit, matches the substring
       previously matched  by  the  nth  parenthesized  subexpression  of  the
       regular expression.

Thank you for the bug report. This bug has been fixed in CVS and
in grep-2.5.4. You may download the latest release from:

ftp://ftp.gnu.org/gnu/grep/

Paolo Bonzini <bonzini>
Thu 17 Aug 2006 10:25:06 AM UTC, original submission:  

Original bug report:
  https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=202871

Grep's man page only reference to parentheses is that they lose their special meaning in basic regular expressions.  There needs to be some descriptions about what parentheses do and how to use them.

Tim Waugh <twaugh>

 

No files currently attached

 

Depends on the following items: None found

Items that depend on this one: None found

 

Carbon-Copy List
  • -email is unavailable- added by bonzini (Posted a comment)
  •  

    Do you think this task is very important?
    If so, you can add your encouragement to it.
    This task has 0 encouragements so far.

    Only logged-in users can vote.

     

     

     

    Follow 2 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2009-12-22 bonzini StatusNone => Fixed
        Open/ClosedOpen => Closed

    Back to the top


    Powered by Savane 3.6