Charvi Mendiratta <charvi077@xxxxxxxxx> writes:
> `git commit --fixup=reword:<commit>` creates an empty "amend!" commit
> that will reword <commit> without changing its contents when it is
> rebased with --autosquash.
>
> Apart from ignoring staged changes it works similarly to
> `--fixup=amend:<commit>`.
>
> Mentored-by: Christian Couder <chriscool@xxxxxxxxxxxxx>
> Mentored-by: Phillip Wood <phillip.wood@xxxxxxxxxxxxx>
> Helped-by: Junio C Hamano <gitster@xxxxxxxxx>
> Signed-off-by: Charvi Mendiratta <charvi077@xxxxxxxxx>
> ---
> builtin/commit.c | 46 +++++++++++++++++++++++++++++++++++++---------
> 1 file changed, 37 insertions(+), 9 deletions(-)
>
> diff --git a/builtin/commit.c b/builtin/commit.c
> index 56ae15a762..82e77aa61d 100644
> --- a/builtin/commit.c
> +++ b/builtin/commit.c
> @@ -1177,6 +1177,27 @@ static void finalize_deferred_config(struct wt_status *s)
> s->ahead_behind_flags = AHEAD_BEHIND_FULL;
> }
>
> +static void check_fixup_reword_options(int argc) {
> + if (whence != FROM_COMMIT) {
> + if (whence == FROM_MERGE)
> + die(_("You are in the middle of a merge -- cannot reword."));
> + else if (is_from_cherry_pick(whence))
> + die(_("You are in the middle of a cherry-pick -- cannot reword."));
> + }
> + if (argc)
> + die(_("cannot combine reword option of --fixup with paths"));
It would be easier if the user is told "foo" in the message when
$ git commit --fixup=reword:HEAD~ -- foo
(from your tests) is attempted, no?
> + if (patch_interactive)
> + die(_("cannot combine reword option of --fixup with --patch"));
> + if (interactive)
> + die(_("cannot combine reword option of --fixup with --interactive"));
> + if (all)
> + die(_("cannot combine reword option of --fixup with --all"));
> + if (also)
> + die(_("cannot combine reword option of --fixup with --include"));
> + if (only)
> + die(_("cannot combine reword option of --fixup with --only"));
> +}
> +
> /* returns the length of intial segment of alpha characters only */
> static size_t get_alpha_len(char *fixup_message) {
> const char alphas[] = "abcdefghijklmnopqrstuvwxyz";
> @@ -1261,18 +1282,25 @@ static int parse_and_validate_options(int argc, const char *argv[],
>
> if (fixup_message) {
> /*
> - * As `amend` suboption contains only alpha
> - * character. So check if first non alpha
> - * character in fixup_message is ':'.
> + * As `amend`/`reword` suboptions contains only alpha
> + * characters. So check if first non alpha character
> + * in fixup_message is ':'.
> */
> size_t len = get_alpha_len(fixup_message);
> if (len && fixup_message[len] == ':') {
> fixup_message[len] = '\0';
> fixup_commit = fixup_message + ++len;
> - if (starts_with("amend", fixup_message))
> + if (starts_with("amend", fixup_message) ||
> + starts_with("reword", fixup_message)) {
> fixup_prefix = "amend";
> - else
> + if (*fixup_message == 'r') {
> + check_fixup_reword_options(argc);
> + allow_empty = 1;
> + only = 1;
OK. We make sure that there is no pathspec and then by giving
only==1, we ignore any difference that already may exist between
HEAD and the index. IOW
edit somefile
git add somefile
git commit --fixup=reword:<commit>
will still record the same tree as HEAD, without affected by the
addition of somefile to the index that is done before.
Good.
> + }
> + } else {
> die(_("unknown option: --fixup=%s:%s"), fixup_message, fixup_commit);
> + }
> } else {
> fixup_commit = fixup_message;
> fixup_prefix = "fixup";
> @@ -1558,11 +1586,11 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
> OPT_STRING('c', "reedit-message", &edit_message, N_("commit"), N_("reuse and edit message from specified commit")),
> OPT_STRING('C', "reuse-message", &use_message, N_("commit"), N_("reuse message from specified commit")),
> /*
> - * TRANSLATORS: please do not translate [amend:]
> - * Here "amend" is an option to the --fixup command
> - * line flag, that creates amend! commit.
> + * TRANSLATORS: please do not translate [(amend|reword):]
> + * Here "amend" and "reword" are options to the --fixup
> + * command line flag, that creates amend! commit.
I am not sure this comment is all that helpful to the translaters.
If they are not allowed to translate <amend|reword> part, telling
them what that part means does not help them very much.
Leave "[(amend|reword):]" as-is, and only translate <commit>.
would be more direct without distracting them with useless piece of
information, no?
> */
> - OPT_STRING(0, "fixup", &fixup_message, N_("[amend:]commit"), N_("use autosquash formatted message to fixup or amend specified commit")),
> + OPT_STRING(0, "fixup", &fixup_message, N_("[(amend|reword):]commit"), N_("use autosquash formatted message to fixup or amend/reword specified commit")),
> OPT_STRING(0, "squash", &squash_message, N_("commit"), N_("use autosquash formatted message to squash specified commit")),
> OPT_BOOL(0, "reset-author", &renew_authorship, N_("the commit is authored by me now (used with -C/-c/--amend)")),
> OPT_BOOL('s', "signoff", &signoff, N_("add a Signed-off-by trailer")),
