[PATCH v4 00/18] Extending the shelf-life of "git describe" output

[Junio C Hamano <gitster@pobox.com>]

This is take 4.  The earlier rounds were $gmane/200165, 200387, and
200506.

Compared to the previous round, it has more patches in the clean-up
phase.  Most notably, patch 03/18 gets rid of get_sha1_with_mode_1()
and replaces the only external caller of it with a call to a more
straightforward die_on_misspelt_object_name().  The test suite added
by patch 12/18 has more patterns that we can potentially improve on.

The disambiguation logic can now be asked to pick only committish,
which can be used in places like "git commit -C deadbeef".  It also
knows that A and B in "git log A..B" can only be committishes.

Adding support for treeish, if anybody is tempted to do so, should
now be pretty straightforward.

Junio C Hamano (18):
  sha1_name.c: indentation fix
  sha1_name.c: hide get_sha1_with_context_1() ugliness
  sha1_name.c: get rid of ugly get_sha1_with_mode_1()
  sha1_name.c: get rid of get_sha1_with_mode()
  sha1_name.c: clarify what "fake" is for in find_short_object_filename()
  sha1_name.c: rename "now" to "current"
  sha1_name.c: refactor find_short_packed_object()
  sha1_name.c: correct misnamed "canonical" and "res"
  sha1_name.c: restructure disambiguation of short names
  sha1_name.c: allow get_short_sha1() to take other flags
  sha1_name.c: teach get_short_sha1() a commit-only option
  sha1_name.c: get_describe_name() by definition groks only commits
  sha1_name.c: get_sha1_1() takes lookup flags
  sha1_name.c: many short names can only be committish
  sha1_name.c: teach lookup context to get_sha1_with_context()
  sha1_name.c: introduce get_sha1_committish()
  revision.c: allow handle_revision_arg() to take other flags
  revision.c: the "log" family, except for "show", takes committish

 builtin/cat-file.c                  |   2 +-
 builtin/log.c                       |   3 +
 builtin/pack-objects.c              |   2 +-
 cache.h                             |  18 +-
 commit.c                            |   2 +-
 revision.c                          |  38 ++--
 revision.h                          |   5 +-
 setup.c                             |   8 +-
 sha1_name.c                         | 383 ++++++++++++++++++++++++------------
 t/t1512-rev-parse-disambiguation.sh | 208 ++++++++++++++++++++
 10 files changed, 509 insertions(+), 160 deletions(-)
 create mode 100755 t/t1512-rev-parse-disambiguation.sh

-- 
1.7.11.1.212.g52fe12e