diff -r 654b9e1966f7 -r 525fdb738975 mercurial/ui.py
--- a/mercurial/ui.py	Fri May 11 18:41:04 2012 +0200
+++ b/mercurial/ui.py	Sat May 12 15:54:54 2012 +0200
@@ -680,7 +680,8 @@
         printed.'''
         if self.tracebackflag:
             if exc:
-                traceback.print_exception(exc[0], exc[1], exc[2], file=self.ferr)
+                traceback.print_exception(exc[0], exc[1], exc[2],
+                                          file=self.ferr)
             else:
                 traceback.print_exc(file=self.ferr)
         return self.tracebackflag