[RFC 0/3] Add support for --cover-at-tip

[Nicolas Morey-Chaisemartin <NMoreyChaisemartin@suse.de>]

v2:
- Enhance mailinfo to parse patch series id from subject
- Detect cover using mailinfo parsed ids in git am
- Support multiple patch series in a single run

TODO:
- Add doc/comments
- Add tests
- Add a new "seperator" at the end of a cover letter.
  Right now I added a triple dash to all cover letter (manual or cover-at-tip) before shortlog/diff stat
  This allows manually written cover letters to be handle by git am --cover-at-tip without including the shortlog/diffstat but
  breaks compat with older git am as it is seen has a malformed patch. A new separator would solve that.

Note: Cover letter automatically generated with --cover-at-tip ;)

Signed-off-by: Nicolas Morey-Chaisemartin <nicolas@morey-chaisemartin.com>
---
Nicolas Morey-Chaisemartin (3):
  mailinfo: extract patch series id
  am: semi working --cover-at-tip
  log: add an option to generate cover letter from a branch tip

 Documentation/git-format-patch.txt |   4 ++
 builtin/am.c                       | 143 ++++++++++++++++++++++++++++++++-----
 builtin/log.c                      |  44 +++++++++---
 mailinfo.c                         |  35 +++++++++
 mailinfo.h                         |   2 +
 5 files changed, 201 insertions(+), 27 deletions(-)

-- 
2.15.0.169.g3d3eebb67.dirty