hgext/histedit.py

--- a/hgext/histedit.py	Sat Feb 09 15:59:44 2013 +0000
+++ b/hgext/histedit.py	Sat Aug 03 16:37:17 2013 +0200
@@ -498,8 +498,8 @@
         keep = opts.get('keep', False)
         revs = between(repo, parent, topmost, keep)
         if not revs:
-            ui.warn(_('nothing to edit\n'))
-            return 1
+            raise util.Abort(_('%s is not an ancestor of working directory') %
+                             node.short(parent))
 
         ctxs = [repo[r] for r in revs]
         rules = opts.get('commands', '')