Add option '-t' to get full thread from Message-Id

[kylebarbour]

This retrieves the entire thread as understood by notmuch for a given message ID (closes #11). Unfortunately, mutt doesn't provide a way to automatically give you the message ID, and as far as I can tell the message ID is the best way for notmuch to give you the thread, so this requires a little scripting to make it work — suggestions welcome to improve this!

I have a helper script containing the following:

#! /bin/bash
msg="$(< /dev/stdin)"
id="$(echo "$msg" | grep Message-Id | sed 's/.*<\(.*\)>/\1/')"

mutt-notmuch-py -G -t "$id" ~/.mutt/tmp/thread

and then in my .muttrc I can use

macro index,pager ga "<pipe-message>notmuch-thread.sh<Enter>\
<change-folder-readonly>~/.mutt/tmp/thread<Enter>" \
"show all messages in thread"

and I thus have the thread functionality provided by the original perl script.

Suggestions/improvements welcome!

[kylebarbour]

One option that would make this a little less crufty would be to allow mutt-notmuch-py to accept the full message on stdin, which would allow all that manipulation to happen inside the program. I just wasn't sure if that was in line with your idea of how this ought to work.