diff -r 217703f760d1 -r 4612cded5176 hgext/extdiff.py
--- a/hgext/extdiff.py	Mon Feb 08 15:06:26 2010 +0100
+++ b/hgext/extdiff.py	Mon Feb 08 15:36:34 2010 +0100
@@ -126,7 +126,7 @@
     modadd = mod_a | add_a | mod_b | add_b
     common = modadd | rem_a | rem_b
     if not common:
-       return 0
+        return 0
 
     tmproot = tempfile.mkdtemp(prefix='extdiff.')
     try: