web commit by PaulWise

diff --git a/doc/plugins/contrib/siterel2pagerel.mdwn b/doc/plugins/contrib/siterel2pagerel.mdwn
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+++ b/doc/plugins/contrib/siterel2pagerel.mdwn
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+This is a simple plugin to convert all site-relative links to page-relative links (converts /foo into ../../../foo or similar). It works as a postprocessing filter, allowing it to work on mdwn, wiki, html, rst and any other format that produces html. The code is available here:
+
+       #!/usr/bin/perl
+       # quick HTML abs2rel link hack by Paul Wise
+       package IkiWiki::Plugin::siterel2pagerel;
+
+       use warnings;
+       use strict;
+       use IkiWiki 2.00;
+
+       sub import { #{{{
+               hook(type => "sanitize", id => "siterel2pagerel", call => \&siterel2pagerel);
+       } # }}}
+
+       sub siterel2pagerel (@) { #{{{
+               my %params=@_;
+               my $baseurl=IkiWiki::baseurl($params{page});
+               my $content=$params{content};
+               $content=~s/(<a(?:\s+(?:class|id)\s*="?\w+"?)?)\s+href=\s*"\/([^"]*)"/$1 href="$baseurl$2"/mig;
+               $content=~s/(<img(?:\s+(?:class|id|width|height)\s*="?\w+"?)*)\s+src=\s*"\/([^"]*)"/$1 src="$baseurl$2"/mig;
+               # FIXME: do <script and everything else that can have URLs in it
+               return $content;
+       } # }}}
+
+       1