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Merge branch 'pw/advise-rebase-skip'

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The mechanism to prevent "git commit" from making an empty commit
or amending during an interrupted cherry-pick was broken during the
rewrite of "git rebase" in C, which has been corrected.

* pw/advise-rebase-skip:
  commit: give correct advice for empty commit during a rebase
  commit: encapsulate determine_whence() for sequencer
  commit: use enum value for multiple cherry-picks
  sequencer: write CHERRY_PICK_HEAD for reword and edit
  cherry-pick: check commit error messages
  cherry-pick: add test for `--skip` advice in `git commit`
  t3404: use test_cmp_rev
This commit is contained in:
Junio C Hamano
2020-03-25 13:57:43 -07:00
parent 9a0fa1709c 430b75f720
commit f085189f14
8 changed files with 233 additions and 46 deletions
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40
builtin/commit.c
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@ -59,6 +59,9 @@ N_("The previous cherry-pick is now empty, possibly due to conflict resolution.\
" git commit --allow-empty\n"
"\n");
static const char empty_rebase_pick_advice[] =
N_("Otherwise, please use 'git rebase --skip'\n");
static const char empty_cherry_pick_advice_single[] =
N_("Otherwise, please use 'git cherry-pick --skip'\n");
@ -122,7 +125,6 @@ static enum commit_msg_cleanup_mode cleanup_mode;
static const char *cleanup_arg;
static enum commit_whence whence;
static int sequencer_in_use;
static int use_editor = 1, include_status = 1;
static int have_option_m;
static struct strbuf message = STRBUF_INIT;
@ -179,12 +181,7 @@ static void determine_whence(struct wt_status *s)
{
if (file_exists(git_path_merge_head(the_repository)))
whence = FROM_MERGE;
else if (file_exists(git_path_cherry_pick_head(the_repository))) {
whence = FROM_CHERRY_PICK;
if (file_exists(git_path_seq_dir()))
sequencer_in_use = 1;
}
else
else if (!sequencer_determine_whence(the_repository, &whence))
whence = FROM_COMMIT;
if (s)
s->whence = whence;
@ -477,8 +474,10 @@ static const char *prepare_index(int argc, const char **argv, const char *prefix
if (whence != FROM_COMMIT) {
if (whence == FROM_MERGE)
die(_("cannot do a partial commit during a merge."));
else if (whence == FROM_CHERRY_PICK)
else if (is_from_cherry_pick(whence))
die(_("cannot do a partial commit during a cherry-pick."));
else if (is_from_rebase(whence))
die(_("cannot do a partial commit during a rebase."));
}
if (list_paths(&partial, !current_head ? NULL : "HEAD", &pathspec))
@ -795,7 +794,7 @@ static int prepare_to_commit(const char *index_file, const char *prefix,
*/
else if (whence == FROM_MERGE)
hook_arg1 = "merge";
else if (whence == FROM_CHERRY_PICK) {
else if (is_from_cherry_pick(whence) || whence == FROM_REBASE_PICK) {
hook_arg1 = "commit";
hook_arg2 = "CHERRY_PICK_HEAD";
}
@ -973,12 +972,15 @@ static int prepare_to_commit(const char *index_file, const char *prefix,
run_status(stdout, index_file, prefix, 0, s);
if (amend)
fputs(_(empty_amend_advice), stderr);
else if (whence == FROM_CHERRY_PICK) {
else if (is_from_cherry_pick(whence) ||
whence == FROM_REBASE_PICK) {
fputs(_(empty_cherry_pick_advice), stderr);
if (!sequencer_in_use)
if (whence == FROM_CHERRY_PICK_SINGLE)
fputs(_(empty_cherry_pick_advice_single), stderr);
else
else if (whence == FROM_CHERRY_PICK_MULTI)
fputs(_(empty_cherry_pick_advice_multi), stderr);
else
fputs(_(empty_rebase_pick_advice), stderr);
}
return 0;
}
@ -1181,8 +1183,10 @@ static int parse_and_validate_options(int argc, const char *argv[],
if (amend && whence != FROM_COMMIT) {
if (whence == FROM_MERGE)
die(_("You are in the middle of a merge -- cannot amend."));
else if (whence == FROM_CHERRY_PICK)
else if (is_from_cherry_pick(whence))
die(_("You are in the middle of a cherry-pick -- cannot amend."));
else if (whence == FROM_REBASE_PICK)
die(_("You are in the middle of a rebase -- cannot amend."));
}
if (fixup_message && squash_message)
die(_("Options --squash and --fixup cannot be used together"));
@ -1204,7 +1208,8 @@ static int parse_and_validate_options(int argc, const char *argv[],
use_message = edit_message;
if (amend && !use_message && !fixup_message)
use_message = "HEAD";
if (!use_message && whence != FROM_CHERRY_PICK && renew_authorship)
if (!use_message && !is_from_cherry_pick(whence) &&
!is_from_rebase(whence) && renew_authorship)
die(_("--reset-author can be used only with -C, -c or --amend."));
if (use_message) {
use_message_buffer = read_commit_message(use_message);
@ -1213,7 +1218,8 @@ static int parse_and_validate_options(int argc, const char *argv[],
author_message_buffer = use_message_buffer;
}
}
if (whence == FROM_CHERRY_PICK && !renew_authorship) {
if ((is_from_cherry_pick(whence) || whence == FROM_REBASE_PICK) &&
!renew_authorship) {
author_message = "CHERRY_PICK_HEAD";
author_message_buffer = read_commit_message(author_message);
}
@ -1631,8 +1637,10 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
reduce_heads_replace(&parents);
} else {
if (!reflog_msg)
reflog_msg = (whence == FROM_CHERRY_PICK)
reflog_msg = is_from_cherry_pick(whence)
? "commit (cherry-pick)"
: is_from_rebase(whence)
? "commit (rebase)"
: "commit";
commit_list_insert(current_head, &parents);
}