pagestats: Use a combination of precense and link dependencies.

This makes it more efficient.

It also fixes the same bug that I fixed in orphans recently,
that only changes to the set of displayed pages were considered (or amoung),
which missed changes to links on other pages to those.

Probably this bug was never noticed because pagestats is most often put
on a blog type page, which gets updated anyway when posts change,
and thus the tag cloud was updated.

1 files changed, 7 insertions, 4 deletions

diff --git a/IkiWiki/Plugin/pagestats.pm b/IkiWiki/Plugin/pagestats.pm
index 874ead7e6..00b919325 100644
--- a/IkiWiki/Plugin/pagestats.pm
+++ b/IkiWiki/Plugin/pagestats.pm
@@ -35,10 +35,13 @@ 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}, $params{pages});
-	add_depends($params{page}, $params{among}) if exists $params{among};
+	# Needs to update whenever a page is added or removed.
+	add_depends($params{page}, $params{pages}, exists => 1);
+	# Also needs to update when any page with links changes, 
+	# in case the links point to our displayed pages.
+	# (Amoung limits this further.)
+	add_depends($params{page}, exists $params{among} ? $params{among} : "*",
+		links => 1); 
 	
 	my %counts;
 	my $max = 0;