Completion now works correctly for sub-sub-commands like 'darcs show repo'.
1 patch for repository http://darcs.net/screened:
patch 56e1c607a2847c081812b14cdb33619ebcad730f
Author: Ben Franksen <benjamin.franksen@helmholtz-berlin.de>
Date: Sat Jan 24 22:43:14 CET 2015
* improved zsh completion script
I think this should go into 2.10; maintainers for shell distribution
packages probably look at released versions of programs for improved
completion scripts.