[PATCH 0/6] bisect: follow-up fixes from js/bisect-in-c

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The js/bisect-in-c topic got replaced by dd/bisect-helper-subcommand
and later dd/git-bisect-builtin to fix a regression in "bisect".

This small set of fixes is a cherry-pick of various miscellanious
fixes that were part of js/bisect-in-c that are still worth
having. Johannes and I have coordinated my submission of this
follow-up topic off-list.

The only "new" commit here is the 2/6. It's a cherry-pick of
Johannes's commit to do the same, but as the change to the base was so
extensive (the range diff won't even pick it up anymore with the
default --creation-factor) he suggested I change the authorship, which
I've done here.

There's still other stuff worth picking up from js/bisect-in-c. In
particular we should be using parse_options() for the various
sub-commands of "bisect". But as those changes had much more extensive
conflicts let's leave them for later.

The range-diff here is to pr-1132/dscho/bisect-in-c-v6[1]. My own
branch & CI for this is at [2].

1. https://lore.kernel.org/git/pull.1132.v6.git.1661885419.gitgitgadget@xxxxxxxxx/
2. https://github.com/avar/git/tree/avar-js/bisect-in-c-rebased

Johannes Schindelin (5):
  bisect--helper: simplify exit code computation
  bisect: verify that a bogus option won't try to start a bisection
  bisect run: fix the error message
  bisect: remove Cogito-related code
  bisect: no longer try to clean up left-over `.git/head-name` files

Ævar Arnfjörð Bjarmason (1):
  bisect--helper: make the order consistently `argc, argv`

 bisect.c                    |  3 ---
 builtin/bisect.c            | 52 ++++++++++++++-----------------------
 t/t6030-bisect-porcelain.sh | 21 ++++++++++++++-
 3 files changed, 40 insertions(+), 36 deletions(-)

Range-diff:
 1:  05262b6a7d1 <  -:  ----------- bisect--helper: retire the --no-log option
 2:  1e43148864a <  -:  ----------- bisect--helper: really retire --bisect-next-check
 3:  1a1649d9d0d <  -:  ----------- bisect--helper: really retire `--bisect-autostart`
 4:  9ab30552c6a !  1:  c8c648e4b8c bisect--helper: simplify exit code computation
    @@ Commit message
         Let's use it instead of duplicating the logic.
     
         Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx>
    +    Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx>
     
    - ## builtin/bisect--helper.c ##
    -@@ builtin/bisect--helper.c: int cmd_bisect__helper(int argc, const char **argv, const char *prefix)
    + ## builtin/bisect.c ##
    +@@ builtin/bisect.c: int cmd_bisect(int argc, const char **argv, const char *prefix)
    + 		res = fn(argc, argv, prefix);
      	}
    - 	free_terms(&terms);
      
     -	/*
     -	 * Handle early success
 5:  92b3b116ef8 <  -:  ----------- bisect--helper: make `terms` an explicit singleton
 6:  c9dc0281e38 <  -:  ----------- bisect--helper: make the order consistently `argc, argv`
 7:  e97e187bbec <  -:  ----------- bisect--helper: migrate to OPT_SUBCOMMAND()
 -:  ----------- >  2:  a0de7ad6836 bisect--helper: make the order consistently `argc, argv`
 8:  30c87f2e92e !  3:  e1e31278fef bisect: verify that a bogus option won't try to start a bisection
    @@ Commit message
         by "git bisect start"` and fail if it was found.
     
         Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx>
    +    Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx>
     
      ## t/t6030-bisect-porcelain.sh ##
     @@ t/t6030-bisect-porcelain.sh: test_expect_success 'bisect start with one term1 and term2' '
 9:  4696652b99c !  4:  59a8a3085b1 bisect run: fix the error message
    @@ Commit message
     
         Helped-by: Elijah Newren <newren@xxxxxxxxx>
         Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx>
    +    Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx>
     
    - ## builtin/bisect--helper.c ##
    -@@ builtin/bisect--helper.c: static int cmd_bisect_run(int argc, const char **argv, const char *prefix)
    - 			printf(_("bisect found first bad commit"));
    + ## builtin/bisect.c ##
    +@@ builtin/bisect.c: static int bisect_run(struct bisect_terms *terms, int argc, const char **argv)
    + 			puts(_("bisect found first bad commit"));
      			res = BISECT_OK;
      		} else if (res) {
    --			error(_("bisect run failed: 'git bisect--helper --bisect-state"
    -+			error(_("bisect run failed: 'git bisect"
    - 			" %s' exited with error code %d"), new_state, res);
    +-			error(_("bisect run failed: 'bisect-state %s'"
    ++			error(_("bisect run failed: 'git bisect %s'"
    + 				" exited with error code %d"), new_state, res);
      		} else {
      			continue;
     
10:  b202a0e386c <  -:  ----------- bisect: avoid double-quoting when printing the failed command
11:  3376b450867 <  -:  ----------- bisect--helper: calling `bisect_state()` without an argument is a bug
12:  e7623508f90 <  -:  ----------- bisect--helper: make `state` optional
13:  3f052580c95 <  -:  ----------- bisect: move even the command-line parsing to `bisect--helper`
14:  a83fe3dc3c2 <  -:  ----------- Turn `git bisect` into a full built-in
15:  f2132b61ff7 !  5:  1b70cd79cae bisect: remove Cogito-related code
    @@ Commit message
         remove the last remnant of Cogito-accommodating code.
     
         Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx>
    +    Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx>
     
      ## builtin/bisect.c ##
     @@ builtin/bisect.c: static GIT_PATH_FUNC(git_path_bisect_expected_rev, "BISECT_EXPECTED_REV")
    @@ builtin/bisect.c: static GIT_PATH_FUNC(git_path_bisect_expected_rev, "BISECT_EXP
      static GIT_PATH_FUNC(git_path_bisect_names, "BISECT_NAMES")
      static GIT_PATH_FUNC(git_path_bisect_first_parent, "BISECT_FIRST_PARENT")
      static GIT_PATH_FUNC(git_path_bisect_run, "BISECT_RUN")
    -@@ builtin/bisect.c: static int cmd_bisect_start(int argc, const char **argv, const char *prefix)
    +@@ builtin/bisect.c: static enum bisect_error bisect_start(struct bisect_terms *terms, int argc,
      			strbuf_addstr(&start_head, oid_to_hex(&head_oid));
      		} else if (!get_oid(head, &head_oid) &&
      			   skip_prefix(head, "refs/heads/", &head)) {
16:  4f93692e071 !  6:  2ad89aca728 bisect: no longer try to clean up left-over `.git/head-name` files
    @@ Commit message
         So let's remove that code, at long last.
     
         Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx>
    +    Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx>
     
      ## bisect.c ##
     @@ bisect.c: static GIT_PATH_FUNC(git_path_bisect_start, "BISECT_START")
-- 
2.39.0.rc2.1048.g0e5493b8d5b




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