Rename perlunintro to perluniintro; regen toc.

[perl5.git] / pod / perlfaq6.pod

diff --git a/pod/perlfaq6.pod b/pod/perlfaq6.pod
index 121f66c..be7e8ec 100644 (file)
--- a/pod/perlfaq6.pod
+++ b/pod/perlfaq6.pod
@@ -1,6 +1,6 @@
 =head1 NAME
 
-perlfaq6 - Regexes ($Revision: 1.27 $, $Date: 1999/05/23 16:08:30 $)
+perlfaq6 - Regexes ($Revision: 1.4 $, $Date: 2001/11/09 08:06:04 $)
 
 =head1 DESCRIPTION
 
@@ -194,7 +194,7 @@ properties of bitwise xor on ASCII strings.
 
     print;
 
-And here it is as a subroutine, modelled after the above:
+And here it is as a subroutine, modeled after the above:
 
     sub preserve_case($$) {
        my ($old, $new) = @_;
@@ -383,20 +383,30 @@ A slight modification also removes C++ comments:
 
 =head2 Can I use Perl regular expressions to match balanced text?
 
-Although Perl regular expressions are more powerful than "mathematical"
-regular expressions because they feature conveniences like backreferences
-(C<\1> and its ilk), they still aren't powerful enough--with
-the possible exception of bizarre and experimental features in the
-development-track releases of Perl.  You still need to use non-regex
-techniques to parse balanced text, such as the text enclosed between
-matching parentheses or braces, for example.
+Historically, Perl regular expressions were not capable of matching
+balanced text.  As of more recent versions of perl including 5.6.1
+experimental features have been added that make it possible to do this.
+Look at the documentation for the (??{ }) construct in recent perlre manual
+pages to see an example of matching balanced parentheses.  Be sure to take
+special notice of the  warnings present in the manual before making use
+of this feature.
+
+CPAN contains many modules that can be useful for matching text
+depending on the context.  Damian Conway provides some useful
+patterns in Regexp::Common.  The module Text::Balanced provides a
+general solution to this problem.
+
+One of the common applications of balanced text matching is working
+with XML and HTML.  There are many modules available that support
+these needs.  Two examples are HTML::Parser and XML::Parser. There
+are many others.
 
 An elaborate subroutine (for 7-bit ASCII only) to pull out balanced
 and possibly nested single chars, like C<`> and C<'>, C<{> and C<}>,
 or C<(> and C<)> can be found in
-http://www.perl.com/CPAN/authors/id/TOMC/scripts/pull_quotes.gz .
+http://www.cpan.org/authors/id/TOMC/scripts/pull_quotes.gz .
 
-The C::Scan module from CPAN contains such subs for internal use,
+The C::Scan module from CPAN also contains such subs for internal use,
 but they are undocumented.
 
 =head2 What does it mean that regexes are greedy?  How can I get around it?
@@ -712,12 +722,8 @@ in L<perlre>.
 Copyright (c) 1997-1999 Tom Christiansen and Nathan Torkington.
 All rights reserved.
 
-When included as part of the Standard Version of Perl, or as part of
-its complete documentation whether printed or otherwise, this work
-may be distributed only under the terms of Perl's Artistic License.
-Any distribution of this file or derivatives thereof I<outside>
-of that package require that special arrangements be made with
-copyright holder.
+This documentation is free; you can redistribute it and/or modify it
+under the same terms as Perl itself.
 
 Irrespective of its distribution, all code examples in this file
 are hereby placed into the public domain.  You are permitted and