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Merge branch 'jc/bisect-sans-show-branch'

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"git bisect" spawned "git show-branch" only to pretty-print the
title of the commit after checking out the next version to be
tested; this has been rewritten in C.

* jc/bisect-sans-show-branch:
  bisect: simplify return code from bisect_checkout()
  bisect: do not run show-branch just to show the current commit
This commit is contained in:
Junio C Hamano 2021-08-24 15:32:35 -07:00
commit ae2d05d0c6
1 changed files with 12 additions and 14 deletions
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26
bisect.c
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@ -23,7 +23,6 @@ static struct oid_array skipped_revs;
static struct object_id *current_bad_oid;
static const char *argv_checkout[] = {"checkout", "-q", NULL, "--", NULL};
static const char *argv_show_branch[] = {"show-branch", NULL, NULL};
static const char *term_bad;
static const char *term_good;
@ -728,7 +727,9 @@ static int is_expected_rev(const struct object_id *oid)
static enum bisect_error bisect_checkout(const struct object_id *bisect_rev, int no_checkout)
{
char bisect_rev_hex[GIT_MAX_HEXSZ + 1];
enum bisect_error res = BISECT_OK;
struct commit *commit;
struct pretty_print_context pp = {0};
struct strbuf commit_msg = STRBUF_INIT;
oid_to_hex_r(bisect_rev_hex, bisect_rev);
update_ref(NULL, "BISECT_EXPECTED_REV", bisect_rev, NULL, 0, UPDATE_REFS_DIE_ON_ERR);
@ -738,24 +739,21 @@ static enum bisect_error bisect_checkout(const struct object_id *bisect_rev, int
update_ref(NULL, "BISECT_HEAD", bisect_rev, NULL, 0,
UPDATE_REFS_DIE_ON_ERR);
} else {
res = run_command_v_opt(argv_checkout, RUN_GIT_CMD);
if (res)
if (run_command_v_opt(argv_checkout, RUN_GIT_CMD))
/*
* Errors in `run_command()` itself, signaled by res < 0,
* and errors in the child process, signaled by res > 0
* can both be treated as regular BISECT_FAILURE (-1).
* can both be treated as regular BISECT_FAILED (-1).
*/
return -abs(res);
return BISECT_FAILED;
}
argv_show_branch[1] = bisect_rev_hex;
res = run_command_v_opt(argv_show_branch, RUN_GIT_CMD);
/*
* Errors in `run_command()` itself, signaled by res < 0,
* and errors in the child process, signaled by res > 0
* can both be treated as regular BISECT_FAILURE (-1).
*/
return -abs(res);
commit = lookup_commit_reference(the_repository, bisect_rev);
format_commit_message(commit, "[%H] %s%n", &commit_msg, &pp);
fputs(commit_msg.buf, stdout);
strbuf_release(&commit_msg);
return BISECT_OK;
}
static struct commit *get_commit_reference(struct repository *r,