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| author |  Aaron Lipman <alipman88@gmail.com> | 2020-08-07 17:58:37 -0400 |
|---|---|---|
| committer |  Junio C Hamano <gitster@pobox.com> | 2020-08-07 15:13:03 -0700 |
| commit | e8861ffc203fe5ea3da97210e60b2e886002f218 (patch) | |
| tree | 727cc7692a4e80c85631cfc3f997fa83cdf22a0a /builtin | |
| parent | cmd_bisect__helper: defer parsing no-checkout flag (diff) | |
| download | tgif-e8861ffc203fe5ea3da97210e60b2e886002f218.tar.xz | |
bisect: introduce first-parent flag
Upon seeing a merge commit when bisecting, this option may be used to
follow only the first parent.
In detecting regressions introduced through the merging of a branch, the
merge commit will be identified as introduction of the bug and its
ancestors will be ignored.
This option is particularly useful in avoiding false positives when a
merged branch contained broken or non-buildable commits, but the merge
itself was OK.
Signed-off-by: Aaron Lipman <alipman88@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'builtin')
| -rw-r--r-- | builtin/bisect--helper.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/builtin/bisect--helper.c b/builtin/bisect--helper.c index 4b175d1c05..68f8721528 100644 --- a/builtin/bisect--helper.c +++ b/builtin/bisect--helper.c @@ -17,6 +17,7 @@ static GIT_PATH_FUNC(git_path_bisect_head, "BISECT_HEAD") static GIT_PATH_FUNC(git_path_bisect_log, "BISECT_LOG") static GIT_PATH_FUNC(git_path_head_name, "head-name") static GIT_PATH_FUNC(git_path_bisect_names, "BISECT_NAMES") +static GIT_PATH_FUNC(git_path_bisect_first_parent, "BISECT_FIRST_PARENT") static const char * const git_bisect_helper_usage[] = { N_("git bisect--helper --next-all"), @@ -28,7 +29,7 @@ static const char * const git_bisect_helper_usage[] = { N_("git bisect--helper --bisect-next-check <good_term> <bad_term> [<term>]"), N_("git bisect--helper --bisect-terms [--term-good | --term-old | --term-bad | --term-new]"), N_("git bisect--helper --bisect-start [--term-{old,good}=<term> --term-{new,bad}=<term>]" - "[--no-checkout] [<bad> [<good>...]] [--] [<paths>...]"), + " [--no-checkout] [--first-parent] [<bad> [<good>...]] [--] [<paths>...]"), NULL }; @@ -424,6 +425,7 @@ finish: static int bisect_start(struct bisect_terms *terms, const char **argv, int argc) { int no_checkout = 0; + int first_parent_only = 0; int i, has_double_dash = 0, must_write_terms = 0, bad_seen = 0; int flags, pathspec_pos, res = 0; struct string_list revs = STRING_LIST_INIT_DUP; @@ -453,6 +455,8 @@ static int bisect_start(struct bisect_terms *terms, const char **argv, int argc) break; } else if (!strcmp(arg, "--no-checkout")) { no_checkout = 1; + } else if (!strcmp(arg, "--first-parent")) { + first_parent_only = 1; } else if (!strcmp(arg, "--term-good") || !strcmp(arg, "--term-old")) { i++; @@ -577,6 +581,9 @@ static int bisect_start(struct bisect_terms *terms, const char **argv, int argc) */ write_file(git_path_bisect_start(), "%s\n", start_head.buf); + if (first_parent_only) + write_file(git_path_bisect_first_parent(), "\n"); + if (no_checkout) { if (get_oid(start_head.buf, &oid) < 0) { res = error(_("invalid ref: '%s'"), start_head.buf); |