[PATCH 0/2] Control guessing of the from-address when replying

[Mark Walters <markwalters1009@gmail.com>]

Hello

This patch sets is intended to allow the user more control over the
From: address when replying to emails. 

In notmuch-reply.c the current logic for the From: address looks as
the main headers, then at the delivery headers, and finally defaults
to the config file address. This means that the frontends (e.g. emacs)
cannot tell whether the users primary address is in the From: header
because the message being replied to was sent to that address, or
notmuch just fellback to using it as it had no better guess. 

The first patch allows the user to control which fallbacks are
used. The second implements this in emacs so that it does not fallback
to the primary address; thus, in this case, emacs can ask for the
address (if notmuch-always-prompt-for-sender is set). The set is not
heavily tested but appears to work.

There is some bikeshedding available as to what options we should be
able to pass to the --from= in notmuch-reply.c.

It obviously also needs some tests and some man pages updates.

Finally, we may want a defcustom option for emacs to control which it
uses (e.g., the user always wants to reply from ther primary address).


Best wishes

Mark