[PATCH 00/43] nd/setup update

["Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>]

Cleanup series, rebased on master.

Except 15/43 (which is now a comment only patch), no changes from pu 9f72b82.

Jonathan Nieder (2):
  help: take note why this command is not applicable for
    RUN_SETUP_GENTLY
  t0001: Add test cases for "git init" with aliases

Nguyễn Thái Ngọc Duy (41):
  builtin: introduce startup_info struct
  builtin: Support RUN_SETUP_GENTLY to set up repository early if found
  config: use RUN_SETUP_GENTLY
  hash-object: use RUN_SETUP_GENTLY
  shortlog: use RUN_SETUP_GENTLY
  grep: use RUN_SETUP_GENTLY
  builtin: USE_PAGER should not be used without RUN_SETUP*
  archive: use RUN_SETUP_GENTLY
  mailinfo: use RUN_SETUP_GENTLY
  check-ref-format: use RUN_SETUP_GENTLY
  verify-pack: use RUN_SETUP_GENTLY
  apply: use RUN_SETUP_GENTLY
  bundle: use RUN_SETUP_GENTLY
  diff: use RUN_SETUP_GENTLY
  ls-remote: use RUN_SETUP_GENTLY
  var: use RUN_SETUP_GENTLY
  merge-file: use RUN_SETUP_GENTLY
  worktree setup: calculate prefix even if no worktree is found
  index-pack: trust the prefix returned by setup_git_directory_gently()
  index-pack: use RUN_SETUP_GENTLY
  Move enter_repo() to setup.c
  enter_repo(): initialize other variables as
    setup_git_directory_gently() does
  rev-parse --git-dir: print relative gitdir correctly
  worktree setup: call set_git_dir explicitly
  Add git_config_early()
  Use git_config_early() instead of git_config() during repo setup
  worktree setup: restore original state when things go wrong
  init/clone: turn on startup->have_repository properly
  git_config(): do not read .git/config if there is no repository
  Do not read .git/info/exclude if there is no repository
  Do not read .git/info/attributes if there is no repository
  apply: do not check sha1 when repository has not been found
  config: do not read .git/config if there is no repository
  run_builtin(): save "-h" detection result for later use
  builtins: utilize startup_info->help where possible
  builtins: check for startup_info->help, print and exit early
  Allow to undo setup_git_directory_gently() gracefully (and fix alias
    code)
  alias: keep repository found while collecting aliases as long as
    possible
  Guard unallowed access to repository when it's not set up
  builtins: setup repository before print unknown command error
  builtins: do not commit pager choice early

 attr.c                     |    5 +-
 builtin/apply.c            |    9 +-
 builtin/archive.c          |    2 +-
 builtin/branch.c           |    3 +
 builtin/bundle.c           |    6 +-
 builtin/check-ref-format.c |    2 +-
 builtin/checkout-index.c   |    3 +
 builtin/clone.c            |    3 +-
 builtin/commit.c           |    6 +
 builtin/config.c           |   15 ++--
 builtin/diff.c             |    6 +-
 builtin/gc.c               |    3 +
 builtin/grep.c             |   11 +--
 builtin/hash-object.c      |    9 +-
 builtin/help.c             |    5 +
 builtin/index-pack.c       |   21 +---
 builtin/init-db.c          |   10 +-
 builtin/log.c              |    6 +-
 builtin/ls-files.c         |    3 +
 builtin/ls-remote.c        |    3 -
 builtin/mailinfo.c         |    3 -
 builtin/merge-file.c       |    4 +-
 builtin/merge-ours.c       |    2 +-
 builtin/merge.c            |    3 +
 builtin/pack-redundant.c   |    2 +-
 builtin/rev-parse.c        |    8 ++
 builtin/shortlog.c         |    4 +-
 builtin/show-ref.c         |    2 +-
 builtin/update-index.c     |    3 +
 builtin/upload-archive.c   |    7 +-
 builtin/var.c              |    2 -
 cache.h                    |   14 +++-
 config.c                   |   22 ++++-
 dir.c                      |    8 +-
 environment.c              |   34 +++++++-
 git.c                      |   99 ++++++++++++-------
 help.c                     |    4 +
 path.c                     |   91 ------------------
 setup.c                    |  223 ++++++++++++++++++++++++++++++++++++++++----
 t/t0001-init.sh            |   52 ++++++++++
 t/t1300-repo-config.sh     |   14 +++
 t/t1302-repo-version.sh    |    2 +-
 t/t1500-rev-parse.sh       |    2 +-
 t/t1501-worktree.sh        |    5 +
 t/t7002-grep.sh            |   24 +++++
 45 files changed, 525 insertions(+), 240 deletions(-)