Seems I forgot to ever send this patch so it did not appear in the tracker.
It is already in screened, will self-accept.
1 patch for repository http://darcs.net/reviewed:
patch 371167fdced425f6db2db74c5036815733ee1090
Author: Ben Franksen <benjamin.franksen@helmholtz-berlin.de>
Date: Fri Nov 14 19:29:40 CET 2014
* In CommandControl, push the existential down into the alternatives