[notmuch] auto-tagging replied messages

[Sebastian Spaeth]

On 2010-03-05, Jesse Rosenthal wrote:
> One element of traditional clients that I've missed in notmuch is the
> ability to easily see which messages have been replied to. A look at the
> thread structure will often make that clear, but for both searching and
> syncing, an "answered" tag would be nice.

This patch has been working great so far and is very useful. Can I
persuade someone to take this into the notmuch code and have a defcustom
as to which tag a reply should get (or disable if nil)?

Sebastian