[PATCH 0/4] Update for Git's Message-Id to Message-ID switch

[Kyle Meyer <kyle@kyleam.com>]

git.git's ba4324c4e1 (e-mail workflow: Message-ID is spelled with ID
in both capital letters, 2023-04-03) has been merged to master.  With
that change, format-patch will insert a Message-ID header instead of
Message-Id.

This series prepares for those changes.  The only patch that
functionally matters is patch 2, which teaches piem-am-ready-mbox's
opt-in "insert message ID header" feature to look for either spelling
when checking whether it should _not_ insert a message ID because one
already exists.

  [1/4] piem-b4-am-from-mid: Tweak docstring for consistency
  [2/4] piem-am-ready-mbox: Adjust header regex for format-patch change
  [3/4] piem-am-ready-mbox: Change spelling of inserted message ID header
  [4/4] Switch remaining Message-Id headers to Message-ID

 piem-b4.el                |  2 +-
 piem.el                   | 13 ++++++++-----
 tests/piem-rmail-tests.el |  2 +-
 tests/piem-tests.el       | 22 ++++++++++++++++++++--
 4 files changed, 30 insertions(+), 9 deletions(-)


base-commit: d78900f06615e247cee5472beca4e7ae164fe77f
-- 
2.39.2