On Thu, 22 Apr 2010 09:24:03 +0100, David Edmondson <dme@dme.org> wrote:
> `notmuch-show-toggle-all' changes the visibility all of the messages
> in the current thread. By default it makes all of the messages
> visible. With a prefix argument, it makes them all not visible.

I pushed this now, (with a rename of the function as I mentioned
before).

-Carl