GnuPG has its own commit message style that is highly structured and contains valuable information. By integrating it in arc and phabricator, we can preserve and enhance it:
* Parse existing commit messages (see https://secure.phabricator.com/T5132#69200)
** Treat "gnupg-bug-id: xxx, yyy" like "Ref xxx", "Ref yyy"
** Parse the one-line summary and changelog section as summary.
** Parse everything between "--" and the keyword list as "Test Plan".
** Maybe parse keywords in first line and add them as projects.
** Maybe link files in changelog-style section to the patch units or the files in the repo browser (if easy to do).
* Extend gnupg commit message format by new featuresw
** Add new keyword field "fixes-bug-id: xxx, yyy" and treat it like "Fixes xxx", "Fixes yyy" (autoclose).
** Add new keyword field "reviewers: user1, user2".
** Add new keyword field "patch-id: Dxxx" (this will be automatically added by arc and links the commit to a patch)
** Document new keyword in doc/HACKING
* Changes in arc
** Create a gnupg commit style template on initial commit message editing
** Create new patch-id instead of "Differential revision:"