Jan, thanks for looking into this.

On Wed, 2 Dec 2009 15:38:54 +0100, Jan Janak <jan@ryngle.com> wrote:
> This seems close enough to what you want and maybe we could somehow make it
> work with notmuch, too. This would be interesting to have, because then we
> could complete multiple tag names with a single TAB press not only in your
> expressions, but everywhere.

Yes, I think that is desirable.

> Let me know if you do not plan to work on this and I'll see if I can make it
> work.

I'm not using tags heavily at the moment, and am busy with other things
so I'm unlikely to get to it in the next couple weeks.  If you can make
completion work with this sort of input, I'll update my filter-by-tags
patch.

Jed