meta: Generate meta description tags even when the html scrubber is enabled.

Unlike generic meta foo tags, meta description is known to be safe, so can
be special cased to be allowed despite the html scrubber. This makes meta
description much more useful, since it is otherwise limited to being used
by other plugins like map.

IkiWiki/Plugin/meta.pm

@@ -239,6 +239,10 @@ sub preprocess (@) {
 		push @{$metaheaders{$page}}, '<meta name="robots"'.
 			' content="'.encode_entities($value).'" />';
 	}
+	elsif ($key eq 'description') {
+		push @{$metaheaders{$page}}, '<meta name="'.encode_entities($key).
+			'" content="'.encode_entities($value).'" />';
+	}
 	else {
 		push @{$metaheaders{$page}}, scrub('<meta name="'.encode_entities($key).
 			'" content="'.encode_entities($value).'" />', $destpage);

debian/changelog

@@ -1,3 +1,10 @@
+ikiwiki (3.20091114) UNRELEASED; urgency=low
+
+  * meta: Generate meta description tags even when the html scrubber is
+    enabled.
+
+ -- Joey Hess <joeyh@debian.org>  Mon, 16 Nov 2009 15:46:45 -0500
+
 ikiwiki (3.20091113) unstable; urgency=low
 
   * underlay: Fix example values put in setup file to be array

doc/ikiwiki/directive/meta.mdwn

@@ -43,8 +43,8 @@ Supported fields:
 
 * description
 
-  Specifies a "description" of the page. You could use this to provide
-  a summary, for example, to be picked up by the [[map]] directive.
+  Specifies a short description for the page. This will be put in
+  the html header, and can also be displayed by eg, the [[map]] directive.
 
 * permalink