[issue29692] contextlib.contextmanager may incorrectly unchain RuntimeError

[Jelle Zijlstra]

Changes by Jelle Zijlstra <jelle.zijlstra at gmail.com>:


----------
nosy: +Jelle Zijlstra

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue29692>
_______________________________________