From 8a29361c321b54607ba5b4a7675508325b450110 Mon Sep 17 00:00:00 2001
From: Joey Hess <joey@kodama.kitenet.net>
Date: Mon, 17 Mar 2008 14:04:59 -0400
Subject: * Detect invalid pagespecs and do not merge them in add_depends,   as
 that can result in a broken merged pagespec that matches nothing.

---
 IkiWiki.pm | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'IkiWiki.pm')

diff --git a/IkiWiki.pm b/IkiWiki.pm
index 668de7e93..bd804269d 100644
--- a/IkiWiki.pm
+++ b/IkiWiki.pm
@@ -1106,6 +1106,8 @@ sub add_depends ($$) { #{{{
 	my $page=shift;
 	my $pagespec=shift;
 	
+	return unless pagespec_valid($pagespec);
+
 	if (! exists $depends{$page}) {
 		$depends{$page}=$pagespec;
 	}
@@ -1234,6 +1236,17 @@ sub pagespec_match ($$;@) { #{{{
 	return $ret;
 } #}}}
 
+sub pagespec_valid ($) { #{{{
+	my $spec=shift;
+
+	# used by generated code
+	my $page="";
+	my @params;
+
+	eval pagespec_translate($spec);
+	return ! $@;
+} #}}}
+
 package IkiWiki::FailReason;
 
 use overload ( #{{{
-- 
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