From 756fbc2fc43d5a64d18889182982e37fa0c334fa Mon Sep 17 00:00:00 2001
From: Don Allingham <don@gramps-project.org>
Date: Thu, 1 Nov 2001 03:15:41 +0000
Subject: [PATCH] Fixed date comparison where one date is not in a valid date
 format

svn: r534
---
 gramps/src/Date.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/gramps/src/Date.py b/gramps/src/Date.py
index dd006f835..ae1f0cdfa 100644
--- a/gramps/src/Date.py
+++ b/gramps/src/Date.py
@@ -1052,6 +1052,11 @@ class SingleDate:
 #
 #-------------------------------------------------------------------------
 def compare_dates(f,s):
+    if f.range == -1 and s.range == -1:
+        return cmp(f.text,s.text)
+    if f.range == -1 or s.range == -1:
+        return -1
+    
     first = f.get_start_date()
     second = s.get_start_date()
     if first.year != second.year: