Change 33852 by [EMAIL PROTECTED] on 2008/05/18 08:56:12
New separations for the pattern match operator documentation,
suggested by David Nicol:
Subject: It's wafer thin!
From: "David Nicol" <[EMAIL PROTECTED]>
Date: Fri, 9 May 2008 18:14:29 +0000
Message-ID: <[EMAIL PROTECTED]>
Affected files ...
... //depot/perl/pod/perlop.pod#171 edit
Differences ...
==== //depot/perl/pod/perlop.pod#171 (text) ====
Index: perl/pod/perlop.pod
--- perl/pod/perlop.pod#170~33328~ 2008-02-18 03:10:13.000000000 -0800
+++ perl/pod/perlop.pod 2008-05-18 01:56:12.000000000 -0700
@@ -1151,6 +1151,8 @@
that you won't change the variables in the pattern. If you change them,
Perl won't even notice. See also L<"qr/STRING/msixpo">.
+=item The empty pattern //
+
If the PATTERN evaluates to the empty string, the last
I<successfully> matched regular expression is used instead. In this
case, only the C<g> and C<c> flags on the empty pattern is honoured -
@@ -1167,6 +1169,8 @@
use parentheses or spaces to disambiguate, or even prefix the empty
regex with an C<m> (so C<//> becomes C<m//>).
+=item Matching in list context
+
If the C</g> option is not used, C<m//> in list context returns a
list consisting of the subexpressions matched by the parentheses in the
pattern, i.e., (C<$1>, C<$2>, C<$3>...). (Note that here C<$1> etc. are
@@ -1213,6 +1217,8 @@
by adding the C</c> modifier (e.g. C<m//gc>). Modifying the target
string also resets the search position.
+=item \G assertion
+
You can intermix C<m//g> matches with C<m/\G.../g>, where C<\G> is a
zero-width assertion that matches the exact position where the previous
C<m//g>, if any, left off. Without the C</g> modifier, the C<\G> assertion
End of Patch.
