oprhans: Use a combination of precense and link dependencies.

This makes it more efficient.

It also fixes a longstanding bug, where if only a small set of pages were
considered by orphans, changes to links on other pages failed to cause an
update.

IkiWiki/Plugin/orphans.pm

@@ -23,9 +23,13 @@ sub preprocess (@) {
 	my %params=@_;
 	$params{pages}="*" unless defined $params{pages};
 	
-	# Needs to update whenever a page is changed, added, or removed,
-	# in order to see the link changes.
-	add_depends($params{page}, $params{pages});
+	# Needs to update whenever a link changes, on any page
+	# since any page could link to one of the pages we're
+	# considering as orphans.
+	add_depends($params{page}, "*", links => 1);
+	# Also needs to update whenever potential orphans are added or
+	# removed.
+	add_depends($params{page}, $params{pages}, presence => 1);
 	
 	my @orphans;
 	foreach my $page (pagespec_match_list(

debian/changelog

@@ -22,6 +22,10 @@ ikiwiki (3.14159266) UNRELEASED; urgency=low
   * inline: Use a presence dependency in quick mode.
   * brokenlinks: Use a link dependency.
     This makes it much more efficient, only updating when really necessary.
+  * oprhans: Use a combination of precense and link dependencies.
+    This makes it more efficient. It also fixes a longstanding bug,
+    where if only a small set of pages were considered by orphans,
+    changes to links on other pages failed to cause an update.
   * Transitive dependencies are now correctly supported.
 
  -- Joey Hess <joeyh@debian.org>  Sun, 27 Sep 2009 17:40:03 -0400