theme: Now <TMPL_IF THEME_$NAME> can be used in all templates when a theme is enabled.

IkiWiki/Plugin/theme.pm

@@ -9,6 +9,7 @@ sub import {
 	hook(type => "getsetup", id => "theme", call => \&getsetup);
 	hook(type => "checkconfig", id => "theme", call => \&checkconfig);
 	hook(type => "needsbuild", id => "theme", call => \&needsbuild);
+	hook(type => "pagetemplate", id => "theme", call => \&pagetemplate);
 }
 
 sub getsetup () {
@@ -63,4 +64,12 @@ sub needsbuild ($) {
 	return $needsbuild;
 }
 
+sub pagetemplate (@) {
+	my %params=@_;
+	my $template=$params{template};
+	if (exists $config{theme} && length $config{theme})  {
+		$template->param("theme_$config{theme}" => 1);
+	}
+}
+
 1

debian/changelog

@@ -2,6 +2,8 @@ ikiwiki (3.20130505) UNRELEASED; urgency=low
 
   * Fix test suite to not fail when XML::Twig is not installed.
     Closes: #707436
+  * theme: Now <TMPL_IF THEME_$NAME> can be used in all templates when
+    a theme is enabled.
 
  -- Joey Hess <joeyh@debian.org>  Thu, 09 May 2013 10:47:18 -0400