diff -r e7d3b509af8b -r 08a0f04b56bd hgext/extdiff.py
--- a/hgext/extdiff.py	Mon Jan 25 00:05:22 2010 -0600
+++ b/hgext/extdiff.py	Mon Jan 25 00:05:27 2010 -0600
@@ -239,7 +239,8 @@
     for cmd, path in ui.configitems('extdiff'):
         if cmd.startswith('cmd.'):
             cmd = cmd[4:]
-            if not path: path = cmd
+            if not path:
+                path = cmd
             diffopts = ui.config('extdiff', 'opts.' + cmd, '')
             diffopts = diffopts and [diffopts] or []
         elif cmd.startswith('opts.'):