X-Git-Url: http://git.vanrenterghem.biz/git.ikiwiki.info.git/blobdiff_plain/2b0c8d167e8b98d11e3504393fe4b98596dfd891..b7351daacd0d4a041a51b43d99b7bf589de54f53:/IkiWiki/Plugin/pagestats.pm?ds=inline

diff --git a/IkiWiki/Plugin/pagestats.pm b/IkiWiki/Plugin/pagestats.pm
index 5dd2f337b..47638210a 100644
--- a/IkiWiki/Plugin/pagestats.pm
+++ b/IkiWiki/Plugin/pagestats.pm
@@ -35,16 +35,31 @@ sub preprocess (@) {
 	$params{pages}="*" unless defined $params{pages};
 	my $style = ($params{style} or 'cloud');
 	
-	# Needs to update whenever a page is added or removed, so
-	# register a dependency.
-	add_depends($params{page}, $params{pages});
-	
 	my %counts;
 	my $max = 0;
-	foreach my $page (pagespec_match_list([keys %links],
-			$params{pages}, location => $params{page})) {
+	foreach my $page (pagespec_match_list($params{page}, $params{pages},
+		                  # update when a displayed page is added/removed
+	        	          deptype => deptype("presence"))) {
 		use IkiWiki::Render;
-		$counts{$page} = scalar(IkiWiki::backlinks($page));
+
+		my @backlinks = IkiWiki::backlink_pages($page);
+
+		if (exists $params{among}) {
+			# only consider backlinks from the amoung pages
+			@backlinks = pagespec_match_list(
+				$params{page}, $params{among},
+				# update whenever links on those pages change
+				deptype => deptype("links"),
+				list => \@backlinks
+			);
+		}
+		else {
+			# update when any page with links changes,
+			# in case the links point to our displayed pages
+			add_depends($params{page}, "*", deptype("links"));
+		}
+
+		$counts{$page} = scalar(@backlinks);
 		$max = $counts{$page} if $counts{$page} > $max;
 	}