From 61f8ea7f1d304e3bc35d852e9a401c2cc45d18ef Mon Sep 17 00:00:00 2001
From: Joey Hess <joey@gnu.kitenet.net>
Date: Fri, 19 Dec 2008 17:57:09 -0500
Subject: [PATCH] avoid uninitialized value

This can happen when a new field,
such as the new lasttry, is added.
---
 IkiWiki/Plugin/aggregate.pm | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/IkiWiki/Plugin/aggregate.pm b/IkiWiki/Plugin/aggregate.pm
index 9b531b612..97dd036f6 100644
--- a/IkiWiki/Plugin/aggregate.pm
+++ b/IkiWiki/Plugin/aggregate.pm
@@ -343,7 +343,8 @@ sub savestate () {
 				push @line, "tag=$_" foreach @{$data->{tags}};
 			}
 			else {
-				push @line, "$field=".$data->{$field};
+				push @line, "$field=".$data->{$field}
+					if defined $data->{$field};
 			}
 		}
 		print OUT join(" ", @line)."\n" || error("write $newfile: $!", $cleanup);
-- 
2.26.2