* Add recentchangesdiff plugin that adds diffs to the recentchanges feeds.

* rcs_diff is a new function that rcs modules should implement.
* Implemented rcs_diff for git, svn, and tla (tla version untested).
  Mercurial and monotone still todo.

2 files changed, 30 insertions, 2 deletions

diff --git a/IkiWiki/Plugin/recentchanges.pm b/IkiWiki/Plugin/recentchanges.pm
index 22f934f2e..e591df79f 100644
--- a/IkiWiki/Plugin/recentchanges.pm
+++ b/IkiWiki/Plugin/recentchanges.pm
@@ -133,7 +133,7 @@ sub store ($$$) { #{{{
 		);
 	}
 
-	# escape  wikilinks and preprocessor stuff in commit messages
+	# escape wikilinks and preprocessor stuff in commit messages
 	if (ref $change->{message}) {
 		foreach my $field (@{$change->{message}}) {
 			if (exists $field->{line}) {
@@ -150,7 +150,8 @@ sub store ($$$) { #{{{
 		wikiname => $config{wikiname},
 	);
 	IkiWiki::run_hooks(pagetemplate => sub {
-		shift->(page => $page, destpage => $page, template => $template);
+		shift->(page => $page, destpage => $page,
+			template => $template, rev => $change->{rev});
 	});
 
 	my $file=$page."._change";
diff --git a/IkiWiki/Plugin/recentchangesdiff.pm b/IkiWiki/Plugin/recentchangesdiff.pm
new file mode 100644
index 000000000..bd2826f76
--- /dev/null
+++ b/IkiWiki/Plugin/recentchangesdiff.pm
@@ -0,0 +1,27 @@
+#!/usr/bin/perl
+package IkiWiki::Plugin::recentchangesdiff;
+
+use warnings;
+use strict;
+use IkiWiki 2.00;
+
+sub import { #{{{
+	hook(type => "pagetemplate", id => "recentchangesdiff",
+		call => \&pagetemplate);
+} #}}}
+
+sub pagetemplate (@) { #{{{
+	my %params=@_;
+	my $template=$params{template};
+	if ($config{rcs} && exists $params{rev} && length $params{rev} &&
+	    $template->query(name => "diff")) {
+		my $diff=IkiWiki::rcs_diff($params{rev});
+		if (defined $diff && length $diff) {
+			# escape links and preprocessor stuff
+			$diff =~ s/(?<!\\)\[\[/\\\[\[/g;
+			$template->param(diff => $diff);
+		}
+	}
+} #}}}
+
+1