[RFC/PATCH 0/4] add git-check-mailmap command

This patch series adds builtin command check-mailmap, similar to check-attr and check-ignore, which allows direct testing of .mailmap configuration. More importantly, as plumbing accessible to scripts and other porcelain, check-mailmap publishes the stable, well-tested .mailmap functionality employed by built-in Git commands.

It is RFC because it lacks documentation; because its utility as a check-foo command is minimal compared to check-attr and check-ignore (although its utility as plumbing for scripts and porcelain is more significant); and because I want to make sure that the project is willing to accept yet another check-foo command.

The idea and motivation for git-check-mailmap arose from the effort to implement .mailmap support for git-contacts [1] (presently at es/contacts in 'pu').

Felipe's Ruby implementation of .mailmap support for his git-related script is introduced in patch 9/15 [2] of v5, and is augmented in patch 10/15 [3] to support invocation from within a subdirectory. His version supports configuration variable mailmap.file, but not mailmap.blob.

Rather than rewriting the functionality yet again, this time in Perl, along with all the details and nuances of the C version employed by Git builtins, I decided that it made more sense to expose the well-tested and polished C implementation as plumbing, thus allowing any script or porcelain to take advantage of it.

[1]: http://thread.gmane.org/gmane.comp.version-control.git/229533/ [2]: http://article.gmane.org/gmane.comp.version-control.git/224782/ [3]: http://article.gmane.org/gmane.comp.version-control.git/224783/

Eric Sunshine (4):
  builtin: add git-check-mailmap command
  t4203: test check-mailmap command invocation
  t4203: test mailmap functionality directly rather than indirectly
  t4203: consolidate test-repository setup

 .gitignore                             |   1 +
 Makefile                               |   1 +
 builtin.h                              |   1 +
 builtin/check-mailmap.c                |  73 ++++++++++
 command-list.txt                       |   1 +
 contrib/completion/git-completion.bash |   1 +
 git.c                                  |   1 +
 t/t4203-mailmap.sh                     | 246 +++++++++++++++++----------------
 8 files changed, 209 insertions(+), 116 deletions(-)
 create mode 100644 builtin/check-mailmap.c