From: Rafael Garcia-Suarez Date: Mon, 12 Jan 2004 22:44:53 +0000 (+0000) Subject: Document usage of $_ and pos() inside /(?{...})/. X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=754091cbb888bc3c0616a4888b5fa4f2a459d234;p=p5sagit%2Fp5-mst-13.2.git Document usage of $_ and pos() inside /(?{...})/. (see change #2367.) p4raw-link: @2367 on //depot/perl: 9661b5442a5f8dacc64d54eb1de98575f21de5f2 p4raw-id: //depot/perl@22125 --- diff --git a/pod/perlre.pod b/pod/perlre.pod index 365cbb9..ea88fc0 100644 --- a/pod/perlre.pod +++ b/pod/perlre.pod @@ -574,6 +574,10 @@ track of the number of nested parentheses. For example: /the (\S+)(?{ $color = $^N }) (\S+)(?{ $animal = $^N })/i; print "color = $color, animal = $animal\n"; +Inside the C<(?{...})> block, C<$_> refers to the string the regular +expression is matching against. You can also use C to know what is +the current position of matching withing this string. + The C is properly scoped in the following sense: If the assertion is backtracked (compare L<"Backtracking">), all changes introduced after Cization are undone, so that