From: Junio C Hamano <gitster@pobox.com>
To: "Phillip Wood via GitGitGadget" <gitgitgadget@gmail.com>
Cc: git@vger.kernel.org,
Johannes Schindelin <Johannes.Schindelin@gmx.de>,
Stefan Haller <lists@haller-berlin.de>,
Phillip Wood <phillip.wood123@gmail.com>,
Phillip Wood <phillip.wood@dunelm.org.uk>
Subject: Re: [PATCH v2 3/6] sequencer: factor out part of pick_commits()
Date: Fri, 21 Apr 2023 12:31:17 -0700 [thread overview]
Message-ID: <xmqqpm7xjam2.fsf@gitster.g> (raw)
In-Reply-To: <31bb644e769a085bd2db97cdb5aae78729efc52d.1682089075.git.gitgitgadget@gmail.com> (Phillip Wood via GitGitGadget's message of "Fri, 21 Apr 2023 14:57:51 +0000")
"Phillip Wood via GitGitGadget" <gitgitgadget@gmail.com> writes:
> From: Phillip Wood <phillip.wood@dunelm.org.uk>
>
> This is simplifies a change in a later commit. If a pick fails we now
> return the error at then end of the loop body rather than returning
> early but there is no change in behavior.
The new pick_one_commit() function is pretty much verbatim copy/move
from inside the "any command below SQUASH" block, and in the
original code, the block returned with an error whenever res is not
0, with one exception that TODO_EDIT would return with 0 if there is
no error (but still with a patch).
The new code that calls pick_one_commit() helper lets this exception
case to return from the function in the "any command below SQUASH"
block, but everything else falls through *and* eventually at the end
of the outer block there is
if (res)
return res;
that makes us return from the function.
But there are now a few other things done after the if/else if/else
cascade, namely
* there is an extra "if (reschedule)" and "else if (rebase-i) etc"
logic.
* the todo_list->current counter is incremented
are done BEFORE that "if res is not zero return". I am not sure we
can safely claim "there is no change in behaviour".
Am I missing something?
Thanks.
> Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
> ---
> sequencer.c | 129 ++++++++++++++++++++++++++++------------------------
> 1 file changed, 69 insertions(+), 60 deletions(-)
>
> diff --git a/sequencer.c b/sequencer.c
> index c4a548f2c98..2d463818dd1 100644
> --- a/sequencer.c
> +++ b/sequencer.c
> @@ -4628,6 +4628,72 @@ N_("Could not execute the todo command\n"
> " git rebase --edit-todo\n"
> " git rebase --continue\n");
>
> +static int pick_one_commit(struct repository *r,
> + struct todo_list *todo_list,
> + struct replay_opts *opts,
> + int *check_todo)
> +{
> + int res;
> + struct todo_item *item = todo_list->items + todo_list->current;
> + const char *arg = todo_item_get_arg(todo_list, item);
> + if (is_rebase_i(opts))
> + opts->reflog_message = reflog_message(
> + opts, command_to_string(item->command), NULL);
> +
> + res = do_pick_commit(r, item, opts, is_final_fixup(todo_list),
> + check_todo);
> + if (is_rebase_i(opts) && res < 0) {
> + /* Reschedule */
> + advise(_(rescheduled_advice),
> + get_item_line_length(todo_list, todo_list->current),
> + get_item_line(todo_list, todo_list->current));
> + todo_list->current--;
> + if (save_todo(todo_list, opts))
> + return -1;
> + }
> + if (item->command == TODO_EDIT) {
> + struct commit *commit = item->commit;
> + if (!res) {
> + if (!opts->verbose)
> + term_clear_line();
> + fprintf(stderr, _("Stopped at %s... %.*s\n"),
> + short_commit_name(commit), item->arg_len, arg);
> + }
> + return error_with_patch(r, commit,
> + arg, item->arg_len, opts, res, !res);
> + }
> + if (is_rebase_i(opts) && !res)
> + record_in_rewritten(&item->commit->object.oid,
> + peek_command(todo_list, 1));
> + if (res && is_fixup(item->command)) {
> + if (res == 1)
> + intend_to_amend();
> + return error_failed_squash(r, item->commit, opts,
> + item->arg_len, arg);
> + } else if (res && is_rebase_i(opts) && item->commit) {
> + int to_amend = 0;
> + struct object_id oid;
> +
> + /*
> + * If we are rewording and have either
> + * fast-forwarded already, or are about to
> + * create a new root commit, we want to amend,
> + * otherwise we do not.
> + */
> + if (item->command == TODO_REWORD &&
> + !repo_get_oid(r, "HEAD", &oid) &&
> + (oideq(&item->commit->object.oid, &oid) ||
> + (opts->have_squash_onto &&
> + oideq(&opts->squash_onto, &oid))))
> + to_amend = 1;
> +
> + return res | error_with_patch(r, item->commit,
> + arg, item->arg_len, opts,
> + res, to_amend);
> + }
> + return res;
> +}
> +
> static int pick_commits(struct repository *r,
> struct todo_list *todo_list,
> struct replay_opts *opts)
> @@ -4683,66 +4749,9 @@ static int pick_commits(struct repository *r,
> }
> }
> if (item->command <= TODO_SQUASH) {
> - if (is_rebase_i(opts))
> - opts->reflog_message = reflog_message(opts,
> - command_to_string(item->command), NULL);
> -
> - res = do_pick_commit(r, item, opts,
> - is_final_fixup(todo_list),
> - &check_todo);
> - if (is_rebase_i(opts) && res < 0) {
> - /* Reschedule */
> - advise(_(rescheduled_advice),
> - get_item_line_length(todo_list,
> - todo_list->current),
> - get_item_line(todo_list,
> - todo_list->current));
> - todo_list->current--;
> - if (save_todo(todo_list, opts))
> - return -1;
> - }
> - if (item->command == TODO_EDIT) {
> - struct commit *commit = item->commit;
> - if (!res) {
> - if (!opts->verbose)
> - term_clear_line();
> - fprintf(stderr,
> - _("Stopped at %s... %.*s\n"),
> - short_commit_name(commit),
> - item->arg_len, arg);
> - }
> - return error_with_patch(r, commit,
> - arg, item->arg_len, opts, res, !res);
> - }
> - if (is_rebase_i(opts) && !res)
> - record_in_rewritten(&item->commit->object.oid,
> - peek_command(todo_list, 1));
> - if (res && is_fixup(item->command)) {
> - if (res == 1)
> - intend_to_amend();
> - return error_failed_squash(r, item->commit, opts,
> - item->arg_len, arg);
> - } else if (res && is_rebase_i(opts) && item->commit) {
> - int to_amend = 0;
> - struct object_id oid;
> -
> - /*
> - * If we are rewording and have either
> - * fast-forwarded already, or are about to
> - * create a new root commit, we want to amend,
> - * otherwise we do not.
> - */
> - if (item->command == TODO_REWORD &&
> - !repo_get_oid(r, "HEAD", &oid) &&
> - (oideq(&item->commit->object.oid, &oid) ||
> - (opts->have_squash_onto &&
> - oideq(&opts->squash_onto, &oid))))
> - to_amend = 1;
> -
> - return res | error_with_patch(r, item->commit,
> - arg, item->arg_len, opts,
> - res, to_amend);
> - }
> + res = pick_one_commit(r, todo_list, opts, &check_todo);
> + if (!res && item->command == TODO_EDIT)
> + return 0;
> } else if (item->command == TODO_EXEC) {
> char *end_of_arg = (char *)(arg + item->arg_len);
> int saved = *end_of_arg;
next prev parent reply other threads:[~2023-04-21 19:31 UTC|newest]
Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-19 14:48 [PATCH] rebase -i: do not update "done" when rescheduling command Phillip Wood via GitGitGadget
2023-03-20 7:29 ` Stefan Haller
2023-03-20 17:46 ` Junio C Hamano
2023-03-24 10:50 ` Phillip Wood
2023-03-24 15:49 ` Junio C Hamano
2023-03-24 16:22 ` Phillip Wood
2023-03-27 7:04 ` Johannes Schindelin
2023-08-03 12:56 ` Phillip Wood
2023-08-23 8:54 ` Johannes Schindelin
2023-04-21 14:57 ` [PATCH v2 0/6] rebase -i: impove handling of failed commands Phillip Wood via GitGitGadget
2023-04-21 14:57 ` [PATCH v2 1/6] rebase -i: move unlink() calls Phillip Wood via GitGitGadget
2023-04-21 17:22 ` Junio C Hamano
2023-04-27 10:15 ` Phillip Wood
2023-04-21 14:57 ` [PATCH v2 2/6] rebase -i: remove patch file after conflict resolution Phillip Wood via GitGitGadget
2023-04-21 19:01 ` Junio C Hamano
2023-04-27 10:17 ` Phillip Wood
2023-06-21 20:14 ` Glen Choo
2023-07-14 10:08 ` Phillip Wood
2023-07-14 16:51 ` Junio C Hamano
2023-07-17 15:39 ` Phillip Wood
2023-04-21 14:57 ` [PATCH v2 3/6] sequencer: factor out part of pick_commits() Phillip Wood via GitGitGadget
2023-04-21 19:12 ` Eric Sunshine
2023-04-21 19:31 ` Junio C Hamano [this message]
2023-04-21 20:00 ` Phillip Wood
2023-04-21 21:21 ` Junio C Hamano
2023-04-21 14:57 ` [PATCH v2 4/6] rebase --continue: refuse to commit after failed command Phillip Wood via GitGitGadget
2023-04-21 19:14 ` Eric Sunshine
2023-04-21 21:05 ` Junio C Hamano
2023-06-21 20:35 ` Glen Choo
2023-04-21 14:57 ` [PATCH v2 5/6] rebase: fix rewritten list for failed pick Phillip Wood via GitGitGadget
2023-06-21 20:49 ` Glen Choo
2023-07-25 15:42 ` Phillip Wood
2023-07-25 16:46 ` Glen Choo
2023-07-26 13:08 ` Phillip Wood
2023-07-26 17:48 ` Glen Choo
2023-07-28 13:19 ` Phillip Wood
2023-04-21 14:57 ` [PATCH v2 6/6] rebase -i: fix adding failed command to the todo list Phillip Wood via GitGitGadget
2023-06-21 20:59 ` Glen Choo
2023-04-21 16:56 ` [PATCH v2 0/6] rebase -i: impove handling of failed commands Junio C Hamano
2023-06-21 20:07 ` Glen Choo
2023-08-01 15:23 ` [PATCH v3 0/7] " Phillip Wood via GitGitGadget
2023-08-01 15:23 ` [PATCH v3 1/7] rebase -i: move unlink() calls Phillip Wood via GitGitGadget
2023-08-01 17:22 ` Junio C Hamano
2023-08-01 18:42 ` Phillip Wood
2023-08-01 19:31 ` Junio C Hamano
2023-08-01 15:23 ` [PATCH v3 2/7] rebase -i: remove patch file after conflict resolution Phillip Wood via GitGitGadget
2023-08-01 17:23 ` Junio C Hamano
2023-08-01 18:47 ` Phillip Wood
2023-08-01 15:23 ` [PATCH v3 3/7] sequencer: use rebase_path_message() Phillip Wood via GitGitGadget
2023-08-01 17:23 ` Junio C Hamano
2023-08-01 18:49 ` Phillip Wood
2023-08-02 22:02 ` Junio C Hamano
2023-08-01 15:23 ` [PATCH v3 4/7] sequencer: factor out part of pick_commits() Phillip Wood via GitGitGadget
2023-08-23 8:55 ` Johannes Schindelin
2023-08-01 15:23 ` [PATCH v3 5/7] rebase: fix rewritten list for failed pick Phillip Wood via GitGitGadget
2023-08-23 8:55 ` Johannes Schindelin
2023-09-04 14:31 ` Phillip Wood
2023-08-01 15:23 ` [PATCH v3 6/7] rebase --continue: refuse to commit after failed command Phillip Wood via GitGitGadget
2023-08-23 9:01 ` Johannes Schindelin
2023-09-04 14:37 ` Phillip Wood
2023-09-05 11:17 ` Johannes Schindelin
2023-09-05 14:57 ` Junio C Hamano
2023-09-05 15:25 ` Phillip Wood
2023-08-01 15:23 ` [PATCH v3 7/7] rebase -i: fix adding failed command to the todo list Phillip Wood via GitGitGadget
2023-08-02 22:10 ` [PATCH v3 0/7] rebase -i: impove handling of failed commands Junio C Hamano
2023-08-03 13:06 ` Phillip Wood
2023-08-09 13:08 ` Phillip Wood
2023-08-07 20:16 ` Glen Choo
2023-08-09 10:06 ` Phillip Wood
2023-09-06 15:22 ` [PATCH v4 " Phillip Wood via GitGitGadget
2023-09-06 15:22 ` [PATCH v4 1/7] rebase -i: move unlink() calls Phillip Wood via GitGitGadget
2023-09-06 15:22 ` [PATCH v4 2/7] rebase -i: remove patch file after conflict resolution Phillip Wood via GitGitGadget
2023-09-06 15:22 ` [PATCH v4 3/7] sequencer: use rebase_path_message() Phillip Wood via GitGitGadget
2023-09-06 15:22 ` [PATCH v4 4/7] sequencer: factor out part of pick_commits() Phillip Wood via GitGitGadget
2023-09-06 15:22 ` [PATCH v4 5/7] rebase: fix rewritten list for failed pick Phillip Wood via GitGitGadget
2023-09-06 15:22 ` [PATCH v4 6/7] rebase --continue: refuse to commit after failed command Phillip Wood via GitGitGadget
2023-09-06 15:22 ` [PATCH v4 7/7] rebase -i: fix adding failed command to the todo list Phillip Wood via GitGitGadget
2023-09-06 21:01 ` [PATCH v4 0/7] rebase -i: impove handling of failed commands Junio C Hamano
2023-09-07 9:56 ` Johannes Schindelin
2023-09-07 20:33 ` Junio C Hamano
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