[PATCH v2 0/8] protocol v2 fixes

["Ævar Arnfjörð Bjarmason" <avarab@gmail.com>]

I figured it would be easier for everyone if I rolled this all into
one series instead of Junio & us needing to keep track of what's based
on what.

The only change I made to Jeff's patches is my SOB and adding a
paragraph to the end of his 3/3 saying that the v2 push protocol
doesn't have the same issue (because it doesn't exist yet). I had that
question in this thread, and thought it was useful to clarify it.

No changes to Jonathan's one patch, except my SOB.

For the rest I incorporated Jonathan's suggestions / fixes with some
amendments. The suggestion to use env --unset isn't portable (and
there's now a check for that while we're at it), so instead we support
"GIT_TEST_PROTOCOL_VERSION=" which'll ignore the environment value.

Other changes in my patches are more narrowly skipping tests, i.e. no
"unset" anymore except for those tests where we're only doing v1 and
v2 tests. I also removed the "env" use in those cases that don't need
it (where we use e.g. test_must_fail), instead we just set the env
variable ourselves with native shell syntax.

Jeff King (3):
  serve: pass "config context" through to individual commands
  parse_hide_refs_config: handle NULL section
  upload-pack: support hidden refs with protocol v2

Jonathan Tan (1):
  builtin/fetch-pack: support protocol version 2

Ævar Arnfjörð Bjarmason (4):
  tests: add a check for unportable env --unset
  tests: add a special setup where for protocol.version
  tests: mark & fix tests broken under GIT_TEST_PROTOCOL_VERSION=1
  tests: mark tests broken under GIT_TEST_PROTOCOL_VERSION=2

 builtin/fetch-pack.c                 |  9 ++++++---
 builtin/upload-pack.c                |  1 +
 ls-refs.c                            | 16 +++++++++++++++-
 ls-refs.h                            |  3 ++-
 protocol.c                           | 13 ++++++++++++-
 refs.c                               |  3 ++-
 serve.c                              |  9 +++++----
 serve.h                              |  7 +++++++
 t/README                             |  6 ++++++
 t/check-non-portable-shell.pl        |  1 +
 t/t0410-partial-clone.sh             |  3 ++-
 t/t5400-send-pack.sh                 |  2 +-
 t/t5500-fetch-pack.sh                |  9 ++++++---
 t/t5503-tagfollow.sh                 |  8 ++++----
 t/t5512-ls-remote.sh                 | 14 ++++++++++----
 t/t5515-fetch-merge-logic.sh         |  2 +-
 t/t5516-fetch-push.sh                | 20 +++++++++++++-------
 t/t5537-fetch-shallow.sh             |  3 ++-
 t/t5539-fetch-http-shallow.sh        |  9 +++++----
 t/t5541-http-push-smart.sh           |  9 +++++++--
 t/t5551-http-fetch-smart.sh          | 19 +++++++++++--------
 t/t5552-skipping-fetch-negotiator.sh |  4 ++--
 t/t5570-git-daemon.sh                |  2 +-
 t/t5601-clone.sh                     | 11 +++++++++--
 t/t5700-protocol-v1.sh               |  1 +
 t/t5702-protocol-v2.sh               |  1 +
 t/t7406-submodule-update.sh          |  3 ++-
 upload-pack.c                        |  4 ++--
 upload-pack.h                        |  4 ++--
 29 files changed, 139 insertions(+), 57 deletions(-)

-- 
2.20.0.405.gbc1bbc6f85