Updated version of the patch-set for tagging forwarded messages

[Örjan Ekeberg]

This is a new (final?) version of the patch set for adding reference
links to forwarded messages, and tags to forwarded and replied messages.

Thanks for all the comments and suggesions for improvements.  Apart
from cleaning up the test code, the only change from the last posted
version is that I have reversed the dependency so that notmuch-mua.el
requires notmuch-message.el.  This change was needed to make the code
emacs-compile cleanly since the code in notmuch-mua uses the variables
defined in notmuch-message.

Örjan Ekeberg (4):
  emacs: Add References header to forwarded messages
  emacs: Use a buffer-local variable to update tags when sending replies
  emacs: Tag forwarded messages with +forwarded (customizable)
  test: add test for checking forwarded messages

 emacs/notmuch-message.el      | 38 ++++++++++++++++++++++++--------
 emacs/notmuch-mua.el          | 27 ++++++++++++++++++++---
 test/T730-emacs-forwarding.sh | 41 +++++++++++++++++++++++++++++++++++
 3 files changed, 94 insertions(+), 12 deletions(-)
 create mode 100755 test/T730-emacs-forwarding.sh

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2.20.1