Fix a bug with links to pages whose names contained colons.

So the problem is that ikiwiki would generate a relative link like
href="colon:problem", which web browsers treat as being in the "colon:"
uri scheme.

The best fix seems to be to make url beautification fix this, by slapping
a "./" in front.

IkiWiki.pm

@@ -538,7 +538,12 @@ sub beautify_url ($) { #{{{
 	if ($config{usedirs}) {
 		$url =~ s!/index.$config{htmlext}$!/!;
 	}
-	$url =~ s!^$!./!; # Browsers don't like empty links...
+
+	# Ensure url is not an empty link, and
+	# if it's relative, make that explicit to avoid colon confusion.
+	if ($url !~ /\//) {
+		$url="./$url";
+	}
 
 	return $url;
 } #}}}

debian/changelog

@@ -4,6 +4,7 @@ ikiwiki (2.53) UNRELEASED; urgency=low
     (Gabriel McManus)
   * attachment: Fix an uninitialised value warning when editing a page
     that currently has no attachments.
+  * Fix a bug with links to pages whose names contained colons.
 
  -- Joey Hess <joeyh@debian.org>  Mon, 07 Jul 2008 01:52:48 -0400