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authorJunio C Hamano <gitster@pobox.com>2019-07-19 18:30:21 (GMT)
committerJunio C Hamano <gitster@pobox.com>2019-07-19 18:30:21 (GMT)
commitd97c62c828d6f0eb7ba7067c8c24793620900dd8 (patch)
tree53941cdc41e6ad573859ee63c570499b869fc967
parentb4b8c35729985a8f1f5e22f82259a2499efbc37a (diff)
parentdcb500dc16ce8db556b51e9a5b3fa977111d0443 (diff)
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Merge branch 'ra/cherry-pick-revert-skip'
"git cherry-pick/revert" learned a new "--skip" action. * ra/cherry-pick-revert-skip: cherry-pick/revert: advise using --skip cherry-pick/revert: add --skip option sequencer: use argv_array in reset_merge sequencer: rename reset_for_rollback to reset_merge sequencer: add advice for revert
-rw-r--r--Documentation/config/advice.txt2
-rw-r--r--Documentation/git-cherry-pick.txt4
-rw-r--r--Documentation/git-revert.txt4
-rw-r--r--Documentation/sequencer.txt4
-rw-r--r--advice.c2
-rw-r--r--advice.h1
-rw-r--r--builtin/commit.c13
-rw-r--r--builtin/revert.c5
-rw-r--r--sequencer.c134
-rw-r--r--sequencer.h1
-rwxr-xr-xt/t3510-cherry-pick-sequence.sh122
11 files changed, 266 insertions, 26 deletions
diff --git a/Documentation/config/advice.txt b/Documentation/config/advice.txt
index ee85c53..6aaa360 100644
--- a/Documentation/config/advice.txt
+++ b/Documentation/config/advice.txt
@@ -68,6 +68,8 @@ advice.*::
resolveConflict::
Advice shown by various commands when conflicts
prevent the operation from being performed.
+ sequencerInUse::
+ Advice shown when a sequencer command is already in progress.
implicitIdentity::
Advice on how to set your identity configuration when
your information is guessed from the system username and
diff --git a/Documentation/git-cherry-pick.txt b/Documentation/git-cherry-pick.txt
index 754b16c..83ce51a 100644
--- a/Documentation/git-cherry-pick.txt
+++ b/Documentation/git-cherry-pick.txt
@@ -10,9 +10,7 @@ SYNOPSIS
[verse]
'git cherry-pick' [--edit] [-n] [-m parent-number] [-s] [-x] [--ff]
[-S[<keyid>]] <commit>...
-'git cherry-pick' --continue
-'git cherry-pick' --quit
-'git cherry-pick' --abort
+'git cherry-pick' (--continue | --skip | --abort | --quit)
DESCRIPTION
-----------
diff --git a/Documentation/git-revert.txt b/Documentation/git-revert.txt
index fae4d66..9d22270 100644
--- a/Documentation/git-revert.txt
+++ b/Documentation/git-revert.txt
@@ -9,9 +9,7 @@ SYNOPSIS
--------
[verse]
'git revert' [--[no-]edit] [-n] [-m parent-number] [-s] [-S[<keyid>]] <commit>...
-'git revert' --continue
-'git revert' --quit
-'git revert' --abort
+'git revert' (--continue | --skip | --abort | --quit)
DESCRIPTION
-----------
diff --git a/Documentation/sequencer.txt b/Documentation/sequencer.txt
index 5a57c4a..3bceb56 100644
--- a/Documentation/sequencer.txt
+++ b/Documentation/sequencer.txt
@@ -3,6 +3,10 @@
`.git/sequencer`. Can be used to continue after resolving
conflicts in a failed cherry-pick or revert.
+--skip::
+ Skip the current commit and continue with the rest of the
+ sequence.
+
--quit::
Forget about the current operation in progress. Can be used
to clear the sequencer state after a failed cherry-pick or
diff --git a/advice.c b/advice.c
index 67de6de..3ee0ee2 100644
--- a/advice.c
+++ b/advice.c
@@ -17,6 +17,7 @@ int advice_status_ahead_behind_warning = 1;
int advice_commit_before_merge = 1;
int advice_reset_quiet_warning = 1;
int advice_resolve_conflict = 1;
+int advice_sequencer_in_use = 1;
int advice_implicit_identity = 1;
int advice_detached_head = 1;
int advice_set_upstream_failure = 1;
@@ -75,6 +76,7 @@ static struct {
{ "commitBeforeMerge", &advice_commit_before_merge },
{ "resetQuiet", &advice_reset_quiet_warning },
{ "resolveConflict", &advice_resolve_conflict },
+ { "sequencerInUse", &advice_sequencer_in_use },
{ "implicitIdentity", &advice_implicit_identity },
{ "detachedHead", &advice_detached_head },
{ "setupStreamFailure", &advice_set_upstream_failure },
diff --git a/advice.h b/advice.h
index 940c4c2..d015404 100644
--- a/advice.h
+++ b/advice.h
@@ -17,6 +17,7 @@ extern int advice_status_ahead_behind_warning;
extern int advice_commit_before_merge;
extern int advice_reset_quiet_warning;
extern int advice_resolve_conflict;
+extern int advice_sequencer_in_use;
extern int advice_implicit_identity;
extern int advice_detached_head;
extern int advice_set_upstream_failure;
diff --git a/builtin/commit.c b/builtin/commit.c
index 3e4b5bf..ae7aaf6 100644
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -60,15 +60,18 @@ N_("The previous cherry-pick is now empty, possibly due to conflict resolution.\
"\n");
static const char empty_cherry_pick_advice_single[] =
-N_("Otherwise, please use 'git reset'\n");
+N_("Otherwise, please use 'git cherry-pick --skip'\n");
static const char empty_cherry_pick_advice_multi[] =
-N_("If you wish to skip this commit, use:\n"
+N_("and then use:\n"
"\n"
-" git reset\n"
+" git cherry-pick --continue\n"
"\n"
-"Then \"git cherry-pick --continue\" will resume cherry-picking\n"
-"the remaining commits.\n");
+"to resume cherry-picking the remaining commits.\n"
+"If you wish to skip this commit, use:\n"
+"\n"
+" git cherry-pick --skip\n"
+"\n");
static const char *color_status_slots[] = {
[WT_STATUS_HEADER] = "header",
diff --git a/builtin/revert.c b/builtin/revert.c
index 4e71b2f..f61cc5d 100644
--- a/builtin/revert.c
+++ b/builtin/revert.c
@@ -102,6 +102,7 @@ static int run_sequencer(int argc, const char **argv, struct replay_opts *opts)
OPT_CMDMODE(0, "quit", &cmd, N_("end revert or cherry-pick sequence"), 'q'),
OPT_CMDMODE(0, "continue", &cmd, N_("resume revert or cherry-pick sequence"), 'c'),
OPT_CMDMODE(0, "abort", &cmd, N_("cancel revert or cherry-pick sequence"), 'a'),
+ OPT_CMDMODE(0, "skip", &cmd, N_("skip current commit and continue"), 's'),
OPT_CLEANUP(&cleanup_arg),
OPT_BOOL('n', "no-commit", &opts->no_commit, N_("don't automatically commit")),
OPT_BOOL('e', "edit", &opts->edit, N_("edit the commit message")),
@@ -151,6 +152,8 @@ static int run_sequencer(int argc, const char **argv, struct replay_opts *opts)
this_operation = "--quit";
else if (cmd == 'c')
this_operation = "--continue";
+ else if (cmd == 's')
+ this_operation = "--skip";
else {
assert(cmd == 'a');
this_operation = "--abort";
@@ -210,6 +213,8 @@ static int run_sequencer(int argc, const char **argv, struct replay_opts *opts)
return sequencer_continue(the_repository, opts);
if (cmd == 'a')
return sequencer_rollback(the_repository, opts);
+ if (cmd == 's')
+ return sequencer_skip(the_repository, opts);
return sequencer_pick_revisions(the_repository, opts);
}
diff --git a/sequencer.c b/sequencer.c
index b91c981..66126e0 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -2654,15 +2654,41 @@ static int walk_revs_populate_todo(struct todo_list *todo_list,
return 0;
}
-static int create_seq_dir(void)
+static int create_seq_dir(struct repository *r)
{
- if (file_exists(git_path_seq_dir())) {
- error(_("a cherry-pick or revert is already in progress"));
- advise(_("try \"git cherry-pick (--continue | --quit | --abort)\""));
+ enum replay_action action;
+ const char *in_progress_error = NULL;
+ const char *in_progress_advice = NULL;
+ unsigned int advise_skip = file_exists(git_path_revert_head(r)) ||
+ file_exists(git_path_cherry_pick_head(r));
+
+ if (!sequencer_get_last_command(r, &action)) {
+ switch (action) {
+ case REPLAY_REVERT:
+ in_progress_error = _("revert is already in progress");
+ in_progress_advice =
+ _("try \"git revert (--continue | %s--abort | --quit)\"");
+ break;
+ case REPLAY_PICK:
+ in_progress_error = _("cherry-pick is already in progress");
+ in_progress_advice =
+ _("try \"git cherry-pick (--continue | %s--abort | --quit)\"");
+ break;
+ default:
+ BUG("unexpected action in create_seq_dir");
+ }
+ }
+ if (in_progress_error) {
+ error("%s", in_progress_error);
+ if (advice_sequencer_in_use)
+ advise(in_progress_advice,
+ advise_skip ? "--skip | " : "");
return -1;
- } else if (mkdir(git_path_seq_dir(), 0777) < 0)
+ }
+ if (mkdir(git_path_seq_dir(), 0777) < 0)
return error_errno(_("could not create sequencer directory '%s'"),
git_path_seq_dir());
+
return 0;
}
@@ -2713,15 +2739,20 @@ static int rollback_is_safe(void)
return oideq(&actual_head, &expected_head);
}
-static int reset_for_rollback(const struct object_id *oid)
+static int reset_merge(const struct object_id *oid)
{
- const char *argv[4]; /* reset --merge <arg> + NULL */
+ int ret;
+ struct argv_array argv = ARGV_ARRAY_INIT;
- argv[0] = "reset";
- argv[1] = "--merge";
- argv[2] = oid_to_hex(oid);
- argv[3] = NULL;
- return run_command_v_opt(argv, RUN_GIT_CMD);
+ argv_array_pushl(&argv, "reset", "--merge", NULL);
+
+ if (!is_null_oid(oid))
+ argv_array_push(&argv, oid_to_hex(oid));
+
+ ret = run_command_v_opt(argv.argv, RUN_GIT_CMD);
+ argv_array_clear(&argv);
+
+ return ret;
}
static int rollback_single_pick(struct repository *r)
@@ -2735,7 +2766,16 @@ static int rollback_single_pick(struct repository *r)
return error(_("cannot resolve HEAD"));
if (is_null_oid(&head_oid))
return error(_("cannot abort from a branch yet to be born"));
- return reset_for_rollback(&head_oid);
+ return reset_merge(&head_oid);
+}
+
+static int skip_single_pick(void)
+{
+ struct object_id head;
+
+ if (read_ref_full("HEAD", 0, &head, NULL))
+ return error(_("cannot resolve HEAD"));
+ return reset_merge(&head);
}
int sequencer_rollback(struct repository *r, struct replay_opts *opts)
@@ -2778,7 +2818,7 @@ int sequencer_rollback(struct repository *r, struct replay_opts *opts)
warning(_("You seem to have moved HEAD. "
"Not rewinding, check your HEAD!"));
} else
- if (reset_for_rollback(&oid))
+ if (reset_merge(&oid))
goto fail;
strbuf_release(&buf);
return sequencer_remove_state(opts);
@@ -2787,6 +2827,70 @@ fail:
return -1;
}
+int sequencer_skip(struct repository *r, struct replay_opts *opts)
+{
+ enum replay_action action = -1;
+ sequencer_get_last_command(r, &action);
+
+ /*
+ * Check whether the subcommand requested to skip the commit is actually
+ * in progress and that it's safe to skip the commit.
+ *
+ * opts->action tells us which subcommand requested to skip the commit.
+ * If the corresponding .git/<ACTION>_HEAD exists, we know that the
+ * action is in progress and we can skip the commit.
+ *
+ * Otherwise we check that the last instruction was related to the
+ * particular subcommand we're trying to execute and barf if that's not
+ * the case.
+ *
+ * Finally we check that the rollback is "safe", i.e., has the HEAD
+ * moved? In this case, it doesn't make sense to "reset the merge" and
+ * "skip the commit" as the user already handled this by committing. But
+ * we'd not want to barf here, instead give advice on how to proceed. We
+ * only need to check that when .git/<ACTION>_HEAD doesn't exist because
+ * it gets removed when the user commits, so if it still exists we're
+ * sure the user can't have committed before.
+ */
+ switch (opts->action) {
+ case REPLAY_REVERT:
+ if (!file_exists(git_path_revert_head(r))) {
+ if (action != REPLAY_REVERT)
+ return error(_("no revert in progress"));
+ if (!rollback_is_safe())
+ goto give_advice;
+ }
+ break;
+ case REPLAY_PICK:
+ if (!file_exists(git_path_cherry_pick_head(r))) {
+ if (action != REPLAY_PICK)
+ return error(_("no cherry-pick in progress"));
+ if (!rollback_is_safe())
+ goto give_advice;
+ }
+ break;
+ default:
+ BUG("unexpected action in sequencer_skip");
+ }
+
+ if (skip_single_pick())
+ return error(_("failed to skip the commit"));
+ if (!is_directory(git_path_seq_dir()))
+ return 0;
+
+ return sequencer_continue(r, opts);
+
+give_advice:
+ error(_("there is nothing to skip"));
+
+ if (advice_resolve_conflict) {
+ advise(_("have you committed already?\n"
+ "try \"git %s --continue\""),
+ action == REPLAY_REVERT ? "revert" : "cherry-pick");
+ }
+ return -1;
+}
+
static int save_todo(struct todo_list *todo_list, struct replay_opts *opts)
{
struct lock_file todo_lock = LOCK_INIT;
@@ -4257,7 +4361,7 @@ int sequencer_pick_revisions(struct repository *r,
*/
if (walk_revs_populate_todo(&todo_list, opts) ||
- create_seq_dir() < 0)
+ create_seq_dir(r) < 0)
return -1;
if (get_oid("HEAD", &oid) && (opts->action == REPLAY_REVERT))
return error(_("can't revert as initial commit"));
diff --git a/sequencer.h b/sequencer.h
index 3d0b68c..6704acb 100644
--- a/sequencer.h
+++ b/sequencer.h
@@ -129,6 +129,7 @@ int sequencer_pick_revisions(struct repository *repo,
struct replay_opts *opts);
int sequencer_continue(struct repository *repo, struct replay_opts *opts);
int sequencer_rollback(struct repository *repo, struct replay_opts *opts);
+int sequencer_skip(struct repository *repo, struct replay_opts *opts);
int sequencer_remove_state(struct replay_opts *opts);
#define TODO_LIST_KEEP_EMPTY (1U << 0)
diff --git a/t/t3510-cherry-pick-sequence.sh b/t/t3510-cherry-pick-sequence.sh
index 941d502..793bcc7 100755
--- a/t/t3510-cherry-pick-sequence.sh
+++ b/t/t3510-cherry-pick-sequence.sh
@@ -93,6 +93,128 @@ test_expect_success 'cherry-pick cleans up sequencer state upon success' '
test_path_is_missing .git/sequencer
'
+test_expect_success 'cherry-pick --skip requires cherry-pick in progress' '
+ pristine_detach initial &&
+ test_must_fail git cherry-pick --skip
+'
+
+test_expect_success 'revert --skip requires revert in progress' '
+ pristine_detach initial &&
+ test_must_fail git revert --skip
+'
+
+test_expect_success 'cherry-pick --skip to skip commit' '
+ pristine_detach initial &&
+ test_must_fail git cherry-pick anotherpick &&
+ test_must_fail git revert --skip &&
+ git cherry-pick --skip &&
+ test_cmp_rev initial HEAD &&
+ test_path_is_missing .git/CHERRY_PICK_HEAD
+'
+
+test_expect_success 'revert --skip to skip commit' '
+ pristine_detach anotherpick &&
+ test_must_fail git revert anotherpick~1 &&
+ test_must_fail git cherry-pick --skip &&
+ git revert --skip &&
+ test_cmp_rev anotherpick HEAD
+'
+
+test_expect_success 'skip "empty" commit' '
+ pristine_detach picked &&
+ test_commit dummy foo d &&
+ test_must_fail git cherry-pick anotherpick &&
+ git cherry-pick --skip &&
+ test_cmp_rev dummy HEAD
+'
+
+test_expect_success 'skip a commit and check if rest of sequence is correct' '
+ pristine_detach initial &&
+ echo e >expect &&
+ cat >expect.log <<-EOF &&
+ OBJID
+ :100644 100644 OBJID OBJID M foo
+ OBJID
+ :100644 100644 OBJID OBJID M foo
+ OBJID
+ :100644 100644 OBJID OBJID M unrelated
+ OBJID
+ :000000 100644 OBJID OBJID A foo
+ :000000 100644 OBJID OBJID A unrelated
+ EOF
+ test_must_fail git cherry-pick base..yetanotherpick &&
+ test_must_fail git cherry-pick --skip &&
+ echo d >foo &&
+ git add foo &&
+ git cherry-pick --continue &&
+ {
+ git rev-list HEAD |
+ git diff-tree --root --stdin |
+ sed "s/$OID_REGEX/OBJID/g"
+ } >actual.log &&
+ test_cmp expect foo &&
+ test_cmp expect.log actual.log
+'
+
+test_expect_success 'check advice when we move HEAD by committing' '
+ pristine_detach initial &&
+ cat >expect <<-EOF &&
+ error: there is nothing to skip
+ hint: have you committed already?
+ hint: try "git cherry-pick --continue"
+ fatal: cherry-pick failed
+ EOF
+ test_must_fail git cherry-pick base..yetanotherpick &&
+ echo c >foo &&
+ git commit -a &&
+ test_path_is_missing .git/CHERRY_PICK_HEAD &&
+ test_must_fail git cherry-pick --skip 2>advice &&
+ test_i18ncmp expect advice
+'
+
+test_expect_success 'selectively advise --skip while launching another sequence' '
+ pristine_detach initial &&
+ cat >expect <<-EOF &&
+ error: cherry-pick is already in progress
+ hint: try "git cherry-pick (--continue | --skip | --abort | --quit)"
+ fatal: cherry-pick failed
+ EOF
+ test_must_fail git cherry-pick picked..yetanotherpick &&
+ test_must_fail git cherry-pick picked..yetanotherpick 2>advice &&
+ test_i18ncmp expect advice &&
+ cat >expect <<-EOF &&
+ error: cherry-pick is already in progress
+ hint: try "git cherry-pick (--continue | --abort | --quit)"
+ fatal: cherry-pick failed
+ EOF
+ git reset --merge &&
+ test_must_fail git cherry-pick picked..yetanotherpick 2>advice &&
+ test_i18ncmp expect advice
+'
+
+test_expect_success 'allow skipping commit but not abort for a new history' '
+ pristine_detach initial &&
+ cat >expect <<-EOF &&
+ error: cannot abort from a branch yet to be born
+ fatal: cherry-pick failed
+ EOF
+ git checkout --orphan new_disconnected &&
+ git reset --hard &&
+ test_must_fail git cherry-pick anotherpick &&
+ test_must_fail git cherry-pick --abort 2>advice &&
+ git cherry-pick --skip &&
+ test_i18ncmp expect advice
+'
+
+test_expect_success 'allow skipping stopped cherry-pick because of untracked file modifications' '
+ pristine_detach initial &&
+ git rm --cached unrelated &&
+ git commit -m "untrack unrelated" &&
+ test_must_fail git cherry-pick initial base &&
+ test_path_is_missing .git/CHERRY_PICK_HEAD &&
+ git cherry-pick --skip
+'
+
test_expect_success '--quit does not complain when no cherry-pick is in progress' '
pristine_detach initial &&
git cherry-pick --quit