[PATCH 0/7] git_hash_*() quality-of-life improvements

[Jeff King <peff@peff.net>]

This implements the "idempotent git_hash_discard()" discussed in this
subthread:

  https://lore.kernel.org/git/20260702080707.GG2029434@coredump.intra.peff.net/

with associated cleanups.

It should be applied on top of jk/hash-algo-leak-fixes.

  [1/7]: hash: use git_hash_init() consistently
  [2/7]: hash: convert remaining direct function calls
  [3/7]: hash: document function pointers and wrappers
  [4/7]: hash: make git_hash_discard() idempotent
  [5/7]: csum-file: use idempotent git_hash_discard()
  [6/7]: http: use idempotent git_hash_discard()
  [7/7]: hash: check ctx->active flag in all wrapper functions

 builtin/fast-import.c       |  4 +--
 builtin/index-pack.c        |  6 ++--
 builtin/patch-id.c          |  2 +-
 builtin/receive-pack.c      |  6 ++--
 builtin/submodule--helper.c | 10 +++---
 builtin/unpack-objects.c    |  4 +--
 csum-file.c                 | 23 +++++---------
 diff.c                      |  4 +--
 hash.c                      | 16 ++++++++++
 hash.h                      | 44 +++++++++++++++++++-------
 http-push.c                 |  2 +-
 http.c                      |  9 ++----
 http.h                      |  1 -
 object-file.c               | 17 +++++-----
 pack-check.c                |  2 +-
 pack-write.c                |  6 ++--
 read-cache.c                |  6 ++--
 rerere.c                    |  5 +--
 t/helper/test-hash-speed.c  |  2 +-
 t/helper/test-hash.c        |  2 +-
 t/helper/test-synthesize.c  | 33 ++++++++++---------
 t/unit-tests/u-hash.c       |  2 +-
 tools/coccinelle/hash.cocci | 63 +++++++++++++++++++++++++++++++++++++
 trace2/tr2_sid.c            |  2 +-
 24 files changed, 181 insertions(+), 90 deletions(-)
 create mode 100644 tools/coccinelle/hash.cocci

-Peff