revert broken parentlinks fix, which was broken, explain why

add plugins/contrib page to avoid broken link on this wiki

IkiWiki/Render.pm

@@ -74,7 +74,7 @@ sub parentlinks ($) { #{{{
 	foreach my $dir (reverse split("/", $page)) {
 		if (! $skip) {
 			$path.="../";
-			unshift @ret, { url => exists $pagesources{$dir} ? $path.htmlpage($dir) : "", page => pagetitle($dir) };
+			unshift @ret, { url => $path.htmlpage($dir), page => pagetitle($dir) };
 		}
 		else {
 			$skip=0;

debian/changelog

@@ -1,7 +1,5 @@
 ikiwiki (1.22) UNRELEASED; urgency=low
 
-  * Fixed a bug with previews of subpages having broken links to top-level
-    pages.
   * Change how the stylesheet url is determined in the templates: Remove
     STYLEURL and add BASEURL to all templates (some already had it). This
     new more general variable can be used to link to other things (eg, images)

doc/bugs/broken_parentlinks.mdwn

@@ -6,4 +6,18 @@ For example, if you are in 'example/page.html', the header will be something
 like 'wiki / example / page'. Now, if 'example.html' doesn't exist, you'll have
 a dead link for every subpage.
 
-[[todo/done]]
+---
+
+This is a bug, but fixing it is very tricky. Consider what would happen if
+example.mdwn were created: example/page.html and the rest of example/*
+would need to be updated to change the parentlink from a bare work to a
+link to the new page. Now if example.mdwn were removed again, they'd need
+to be updated again. So example/* depends on example. But it's even more
+tricky, because if example.mdwn is modified, we _don't_ want to rebuild
+example/*!
+
+ikiwiki doesn't have a way to represent this dependency and can't get one
+without a lot of new complex code being added.
+
+For now the best thing to do is to make sure that you always create
+example if you create example/foo. Which is probably a good idea anyway..

doc/plugins.mdwn

@@ -15,7 +15,7 @@ or the equivalent `add_plugins` line in [[ikiwiki.setup]].
 
 Add all plugins here. Or add ideas to the [[todo|todo/plugin]] page.
 
-[[inline pages="plugins/* !plugins/type/* !plugins/write !*/Discussion" archive="yes" rootpage="plugins/contrib" show="60"]]
+[[inline pages="plugins/* and !plugins/type/* and !plugins/write and !plugins/contrib and !*/Discussion" archive="yes" rootpage="plugins/contrib" show="60"]]
 
 # Installing third party plugins
 

doc/plugins/contrib.mdwn

@@ -0,0 +1,3 @@
+Contributed [[plugins]]:
+
+[[inline pages="plugins/contrib/* !*/Discussion" archive="yes" rootpage="contrib" show="60"]]

templates/page.tmpl

@@ -14,11 +14,7 @@
 <div class="header">
 <span>
 <TMPL_LOOP NAME="PARENTLINKS">
-<TMPL_IF NAME="URL">
 <a href="<TMPL_VAR NAME=URL>"><TMPL_VAR NAME=PAGE></a>/ 
-<TMPL_ELSE>
-<TMPL_VAR NAME=PAGE>/ 
-</TMPL_IF>
 </TMPL_LOOP>
 <TMPL_VAR TITLE>
 </span>