This is a follow-up to a much smaller patch[1] discussed in November
to make t0006-date.sh pass with SANITIZE=leak.

In reply Jeff King pointed out that reaching into its private guts in
the test helper felt ugly[2].

So this series pursues a more thorough approach, creating a date.h,
moving our date functions there out of cache.h, documenting the core
functions, and finally adding and using a date_mode_release()
function.

It's definitely taking the long way around, but I think that the end
result is worth it. I then have a follow-up series to plug memory
leaks in revision.h, which will make use of this new API.

1. https://lore.kernel.org/git/patch-1.1-15f5bd3e4f4-20211116T183025Z-avarab@gmail.com/ (local)
2. https://lore.kernel.org/git/YZQHEiFnOdyxYX5t@coredump.intra.peff.net/ (local)

Ævar Arnfjörð Bjarmason (5):
  cache.h: remove always unused show_date_human() declaration
  date API: create a date.h, split from cache.h
  date API: provide and use a DATE_MODE_INIT
  date API: add basic API docs
  date API: add and use a date_mode_release()

 archive-zip.c         |  1 +
 builtin/am.c          |  1 +
 builtin/commit.c      |  1 +
 builtin/fast-import.c |  1 +
 builtin/show-branch.c |  1 +
 builtin/tag.c         |  1 +
 cache.h               | 50 -----------------------------
 config.c              |  1 +
 date.c                |  9 ++++--
 date.h                | 73 +++++++++++++++++++++++++++++++++++++++++++
 http-backend.c        |  1 +
 ident.c               |  1 +
 object-name.c         |  1 +
 pretty.h              | 10 ++++++
 ref-filter.c          |  3 +-
 refs.c                |  1 +
 strbuf.c              |  1 +
 t/helper/test-date.c  |  5 ++-
 t/t0006-date.sh       |  2 ++
 19 files changed, 110 insertions(+), 54 deletions(-)
 create mode 100644 date.h

-- 
2.35.0.913.g12b4baa2536