--- a/mercurial/manifest.py	Thu Apr 16 15:34:03 2009 +0200
+++ b/mercurial/manifest.py	Sat Apr 18 09:48:59 2009 -0400
@@ -125,7 +125,7 @@
             for f in l:
                 if '\n' in f or '\r' in f:
                     raise error.RevlogError(
-                        _("'\\n' and '\\r' disallowed in filenames"))
+                        _("'\\n' and '\\r' disallowed in filenames: %r") % f)
 
         # if we're using the listcache, make sure it is valid and
         # parented by the same node we're diffing against