# HG changeset patch
# User David McClosky <dmcc@bigasterisk.com>
# Date 1181962118 0
# Node ID c43691ddd39e35513c0ba9cdf74198e5a290b982
# Parent  fcb45b3c74134292f75a32f1035b972b203786c0
curvecalc: better default expr

diff -r fcb45b3c7413 -r c43691ddd39e bin/curvecalc
--- a/bin/curvecalc	Sat Jun 16 01:44:53 2007 +0000
+++ b/bin/curvecalc	Sat Jun 16 02:48:38 2007 +0000
@@ -300,7 +300,7 @@
 
     def add_cmd():
         add_one_subterm(graph, L9['sub/%s' % newname.get()],
-                        curveset, subterms, root, ssv, '')
+                        curveset, subterms, root, ssv, None)
         newname.set('')
 
     def reload_subs():