diff -r 57c6c24b9bc4 -r 72803c8edaa4 mercurial/mail.py --- a/mercurial/mail.py Tue Aug 21 02:41:20 2012 +0200 +++ b/mercurial/mail.py Mon Aug 27 23:14:27 2012 +0200 @@ -13,7 +13,7 @@ _oldheaderinit = email.Header.Header.__init__ def _unifiedheaderinit(self, *args, **kw): """ - Python2.7 introduces a backwards incompatible change + Python 2.7 introduces a backwards incompatible change (Python issue1974, r70772) in email.Generator.Generator code: pre-2.7 code passed "continuation_ws='\t'" to the Header constructor, and 2.7 removed this parameter.