[PATCH] completion: update bash completion

[David Bremner]

Jani Nikula <jani at nikula.org> writes:

>  completion/notmuch-completion.bash | 89 +++++++++++++++++++++++++++++++++++---
>  1 file changed, 82 insertions(+), 7 deletions(-)

I tested some of the new options, and they seem to work.  I'm not very
confident about my understanding of the code, but it does seem
consistent with the existing completion code. 

d