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| author | Yves Orton <demerphq@gmail.com> | 2006-10-12 23:23:15 +0200 |
|---|---|---|
| committer | Rafael Garcia-Suarez <rgarciasuarez@gmail.com> | 2006-10-13 09:02:05 +0000 |
| commit | b9b4dddfa592f0a0a9bfbbcc9a725253c5d991f1 (patch) | |
| tree | 5f71dc4a80fd4ecf351ca7a44ebf79c5a577cefe /pod/perl595delta.pod | |
| parent | c1e8580e8ecd78fc1f67b0caa695b9884a700d93 (diff) | |
| download | perl-b9b4dddfa592f0a0a9bfbbcc9a725253c5d991f1.tar.gz | |
Add possessive quantifiers to regex engine.
Message-ID: <9b18b3110610121223m191e47ddtce3398cb0e8ba320@mail.gmail.com>
With doc tweaks
p4raw-id: //depot/perl@29005
Diffstat (limited to 'pod/perl595delta.pod')
| -rw-r--r-- | pod/perl595delta.pod | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/pod/perl595delta.pod b/pod/perl595delta.pod index e3c24d4453..e0c60796d6 100644 --- a/pod/perl595delta.pod +++ b/pod/perl595delta.pod @@ -78,6 +78,15 @@ $1 will be 'A', $2 will be 'B', $3 will be 'C' and $4 will be 'D' and not $1 is 'A', $2 is 'C' and $3 is 'B' and $4 is 'D' that a .NET programmer would expect. This is considered a feature. :-) +=item Possessive Quantifiers + +Perl now supports the "possessive quantifier" syntax of the "atomic match" +pattern. Basically a possessive quantifier matches as much as it can and never +gives any back. Thus it can be used to control backtracking. The syntax is +similar to non-greedy matching, except instead of using a '?' as the modifier +the '+' is used. Thus C<?+>, C<*+>, C<++>, C<{min,max}+> are now legal +quantifiers. + =back =head1 Modules and Pragmas |