* map: Fix handling of common prefix to handle the case where it's

in a subdirectory. Patch by Larry Clapp.

IkiWiki/Plugin/map.pm

@@ -37,6 +37,9 @@ sub preprocess (@) { #{{{
 				my @b=split(/\//, $common_prefix);
 				$common_prefix="";
 				while (@a && @b && $a[0] eq $b[0]) {
+					if (length $common_prefix) {
+						$common_prefix.="/";
+					}
 					$common_prefix.=shift(@a);
 					shift @b;
 				}

debian/changelog

@@ -7,6 +7,8 @@ ikiwiki (2.17) UNRELEASED; urgency=low
   * conditional: Improve regexp testing for simple uses of pagespecs
     that match only the page using the directive, adding 'included()'
     and supporting negated pagespecs and added whitespace.
+  * map: Fix handling of common prefix to handle the case where it's
+    in a subdirectory. Patch by Larry Clapp.
 
  -- Joey Hess <joeyh@debian.org>  Wed, 19 Dec 2007 16:39:07 -0500
 

doc/bugs/map_doesn__39__t_calculate___34__common__95__prefix__34___correctly.mdwn

@@ -66,3 +66,5 @@ Note that you you don't get "blog" or "tags", and "life" and "tech" are links no
 Map tries to calculate a "common prefix" between the pagespec and the page being rendered, and then later does some substitutions using the prefix.  But the path has /'s in it and the common prefix doesn't, so it never matches correctly.  So, add the /'s.
 
 -- [[users/Larry_Clapp]]
+
+> Excellent problem description and analysis. Patch [[applied|done]] --[[Joey]]