Update of bug #17454 (project grep):
Status: None => Fixed
Open/Closed: Open => Closed
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Follow-up 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/
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