--- a/tests/test-log.t Fri Mar 25 15:49:43 2011 -0400
+++ b/tests/test-log.t Sun Mar 27 23:48:58 2011 +0200
@@ -512,7 +512,11 @@
date: Thu Jan 01 00:00:01 1970 +0000
summary: r1
+log -d " " (whitespaces only)
+ $ hg log -d " "
+ abort: dates cannot consist entirely of whitespace
+ [255]
log -d -1