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From: Phillip Wood <phillip.wood123@gmail.com>
To: Denton Liu <liu.denton@gmail.com>,
	Git Mailing List <git@vger.kernel.org>
Cc: Junio C Hamano <gitster@pobox.com>
Subject: Re: [PATCH v3 3/4] cherry-pick/revert: add scissors line on merge conflict
Date: Thu, 7 Mar 2019 15:24:16 +0000	[thread overview]
Message-ID: <b568185b-2411-7c43-b1bb-c22594904fa0@gmail.com> (raw)
In-Reply-To: <14672ce10c90c46b15b62c48d2eea6fe8d85ed86.1551951770.git.liu.denton@gmail.com>

Hi Denton

On 07/03/2019 09:58, Denton Liu wrote:
> Fix a bug where the scissors line is placed after the Conflicts:
> section, in the case where a merge conflict occurs and
> commit.cleanup = scissors.
> 
> Note that the removal of the if-else tower in git_sequencer_config may
> appear to be a no-op refactor but it actually isn't. First of all, we
> now accept "default". More importantly, though, if
> commit.cleanup = scissors, the cleanup enum will be set to
> COMMIT_MSG_CLEANUP_SCISSORS instead of COMMIT_MSG_CLEANUP_SPACE when we
> are reverting or cherry-picking. This allows us to append scissors to
> MERGE_MSG in the case of a conflict.
> 
> Signed-off-by: Denton Liu <liu.denton@gmail.com>
> ---
>   Documentation/git-cherry-pick.txt |  7 +++
>   Documentation/git-revert.txt      |  7 +++
>   builtin/merge.c                   | 13 ++---
>   builtin/rebase--helper.c          |  2 +-
>   builtin/revert.c                  |  5 ++
>   sequencer.c                       | 32 +++++-------
>   sequencer.h                       |  3 +-
>   t/t3507-cherry-pick-conflict.sh   | 86 +++++++++++++++++++++++++++++++
>   8 files changed, 125 insertions(+), 30 deletions(-)
> 
> diff --git a/Documentation/git-cherry-pick.txt b/Documentation/git-cherry-pick.txt
> index d35d771fc8..92235bd1c4 100644
> --- a/Documentation/git-cherry-pick.txt
> +++ b/Documentation/git-cherry-pick.txt
> @@ -57,6 +57,13 @@ OPTIONS
>   	With this option, 'git cherry-pick' will let you edit the commit
>   	message prior to committing.
>   
> +--cleanup=<mode>::
> +	This option determines how the commit message will be cleaned up before
> +	being passed on. See linkgit:git-commit[1] for more details. In
> +	addition, if the '<mode>' is given a value of `scissors`, scissors will
> +	be appended to MERGE_MSG before being passed on in the case of a
> +	conflict.
> +
>   -x::
>   	When recording the commit, append a line that says
>   	"(cherry picked from commit ...)" to the original commit
> diff --git a/Documentation/git-revert.txt b/Documentation/git-revert.txt
> index 837707a8fd..bd4ad395a9 100644
> --- a/Documentation/git-revert.txt
> +++ b/Documentation/git-revert.txt
> @@ -66,6 +66,13 @@ more details.
>   	With this option, 'git revert' will not start the commit
>   	message editor.
>   
> +--cleanup=<mode>::
> +	This option determines how the commit message will be cleaned up before
> +	being passed on. See linkgit:git-commit[1] for more details. In
> +	addition, if the '<mode>' is given a value of `scissors`, scissors will
> +	be appended to MERGE_MSG before being passed on in the case of a
> +	conflict.
> +
>   -n::
>   --no-commit::
>   	Usually the command automatically creates some commits with
> diff --git a/builtin/merge.c b/builtin/merge.c
> index 92efc3d8fa..d4217ebcf5 100644
> --- a/builtin/merge.c
> +++ b/builtin/merge.c
> @@ -913,17 +913,10 @@ static int suggest_conflicts(void)
>   	 * We can't use cleanup_mode because if we're not using the editor,
>   	 * get_cleanup_mode will return COMMIT_MSG_CLEANUP_SPACE instead, even
>   	 * though the message is meant to be processed later by git-commit.
> -	 * Thus, we will get the cleanup mode is returned we _are_ using an
> -	 * editor.
> +	 * Thus, we will get the cleanup mode which is returned when we _are_ using
> +	 * an editor.
>   	 */
> -	if (get_cleanup_mode(cleanup_arg, 1) == COMMIT_MSG_CLEANUP_SCISSORS) {
> -	    fputc('\n', fp);
> -	    wt_status_add_cut_line(fp);
> -	    /* comments out the newline from append_conflicts_hint */
> -	    fputc(comment_line_char, fp);
> -	}
> -
> -	append_conflicts_hint(&msgbuf);
> +	append_conflicts_hint(&msgbuf, get_cleanup_mode(cleanup_arg, 1));
>   	fputs(msgbuf.buf, fp);
>   	strbuf_release(&msgbuf);
>   	fclose(fp);
> diff --git a/builtin/rebase--helper.c b/builtin/rebase--helper.c
> index f7c2a5fdc8..5f1bc9d383 100644
> --- a/builtin/rebase--helper.c
> +++ b/builtin/rebase--helper.c
> @@ -48,10 +48,10 @@ int cmd_rebase__helper(int argc, const char **argv, const char *prefix)
>   		OPT_END()
>   	};
>   
> +	opts.action = REPLAY_INTERACTIVE_REBASE;
>   	sequencer_init_config(&opts);
>   	git_config_get_bool("rebase.abbreviatecommands", &abbreviate_commands);
>   
> -	opts.action = REPLAY_INTERACTIVE_REBASE;
>   	opts.allow_ff = 1;
>   	opts.allow_empty = 1;


What are you basing this series on? builtin/rebase--helper.c was removed 
last September in 34b47315d9 ("rebase -i: move rebase--helper modes to 
rebase--interactive", 2018-09-27)

> diff --git a/builtin/revert.c b/builtin/revert.c
> index 9a66720cfc..fe18036be7 100644
> --- a/builtin/revert.c
> +++ b/builtin/revert.c
> @@ -95,11 +95,13 @@ static int run_sequencer(int argc, const char **argv, struct replay_opts *opts)
>   {
>   	const char * const * usage_str = revert_or_cherry_pick_usage(opts);
>   	const char *me = action_name(opts);
> +	const char *cleanup_arg = NULL;
>   	int cmd = 0;
>   	struct option base_options[] = {
>   		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_STRING(0, "cleanup", &cleanup_arg, N_("default"), N_("how to strip spaces and #comments from message")),
>   		OPT_BOOL('n', "no-commit", &opts->no_commit, N_("don't automatically commit")),
>   		OPT_BOOL('e', "edit", &opts->edit, N_("edit the commit message")),
>   		OPT_NOOP_NOARG('r', NULL),
> @@ -136,6 +138,9 @@ static int run_sequencer(int argc, const char **argv, struct replay_opts *opts)
>   	if (opts->keep_redundant_commits)
>   		opts->allow_empty = 1;
>   
> +	if (cleanup_arg)
> +		opts->default_msg_cleanup = get_cleanup_mode(cleanup_arg, 1);
> +
>   	/* Check for incompatible command line arguments */
>   	if (cmd) {
>   		char *this_operation;
> diff --git a/sequencer.c b/sequencer.c
> index 707e72fb39..5c04bae7ac 100644
> --- a/sequencer.c
> +++ b/sequencer.c
> @@ -153,6 +153,11 @@ static GIT_PATH_FUNC(rebase_path_strategy, "rebase-merge/strategy")
>   static GIT_PATH_FUNC(rebase_path_strategy_opts, "rebase-merge/strategy_opts")
>   static GIT_PATH_FUNC(rebase_path_allow_rerere_autoupdate, "rebase-merge/allow_rerere_autoupdate")
>   
> +static inline int is_rebase_i(const struct replay_opts *opts)
> +{
> +	return opts->action == REPLAY_INTERACTIVE_REBASE;
> +}
> +

This is already in sequencer.c in a different place in recent versions

Best Wishes

Phillip

>   static int git_sequencer_config(const char *k, const char *v, void *cb)
>   {
>   	struct replay_opts *opts = cb;
> @@ -165,17 +170,7 @@ static int git_sequencer_config(const char *k, const char *v, void *cb)
>   		if (status)
>   			return status;
>   
> -		if (!strcmp(s, "verbatim"))
> -			opts->default_msg_cleanup = COMMIT_MSG_CLEANUP_NONE;
> -		else if (!strcmp(s, "whitespace"))
> -			opts->default_msg_cleanup = COMMIT_MSG_CLEANUP_SPACE;
> -		else if (!strcmp(s, "strip"))
> -			opts->default_msg_cleanup = COMMIT_MSG_CLEANUP_ALL;
> -		else if (!strcmp(s, "scissors"))
> -			opts->default_msg_cleanup = COMMIT_MSG_CLEANUP_SPACE;
> -		else
> -			warning(_("invalid commit message cleanup mode '%s'"),
> -				  s);
> +		opts->default_msg_cleanup = get_cleanup_mode(s, !is_rebase_i(opts));
>   
>   		free((char *)s);
>   		return status;
> @@ -199,11 +194,6 @@ void sequencer_init_config(struct replay_opts *opts)
>   	git_config(git_sequencer_config, opts);
>   }
>   
> -static inline int is_rebase_i(const struct replay_opts *opts)
> -{
> -	return opts->action == REPLAY_INTERACTIVE_REBASE;
> -}
> -
>   static const char *get_dir(const struct replay_opts *opts)
>   {
>   	if (is_rebase_i(opts))
> @@ -516,10 +506,16 @@ enum commit_msg_cleanup_mode get_cleanup_mode(const char *cleanup_arg,
>   		die(_("Invalid cleanup mode %s"), cleanup_arg);
>   }
>   
> -void append_conflicts_hint(struct strbuf *msgbuf)
> +void append_conflicts_hint(struct strbuf *msgbuf, enum commit_msg_cleanup_mode cleanup_mode)
>   {
>   	int i;
>   
> +	if (cleanup_mode == COMMIT_MSG_CLEANUP_SCISSORS) {
> +		strbuf_addch(msgbuf, '\n');
> +		wt_status_append_cut_line(msgbuf);
> +		strbuf_addch(msgbuf, comment_line_char);
> +	}
> +
>   	strbuf_addch(msgbuf, '\n');
>   	strbuf_commented_addf(msgbuf, "Conflicts:\n");
>   	for (i = 0; i < active_nr;) {
> @@ -586,7 +582,7 @@ static int do_recursive_merge(struct commit *base, struct commit *next,
>   			_(action_name(opts)));
>   
>   	if (!clean)
> -		append_conflicts_hint(msgbuf);
> +		append_conflicts_hint(msgbuf, opts->default_msg_cleanup);
>   
>   	return !clean;
>   }
> diff --git a/sequencer.h b/sequencer.h
> index 5690e0c27e..aa99503dd7 100644
> --- a/sequencer.h
> +++ b/sequencer.h
> @@ -91,7 +91,8 @@ int rearrange_squash(void);
>   extern const char sign_off_header[];
>   
>   void append_signoff(struct strbuf *msgbuf, int ignore_footer, unsigned flag);
> -void append_conflicts_hint(struct strbuf *msgbuf);
> +void append_conflicts_hint(struct strbuf *msgbuf,
> +		enum commit_msg_cleanup_mode cleanup_mode);
>   enum commit_msg_cleanup_mode get_cleanup_mode(const char *cleanup_arg,
>   	int use_editor);
>   
> diff --git a/t/t3507-cherry-pick-conflict.sh b/t/t3507-cherry-pick-conflict.sh
> index 74ff925526..c3894ca9d6 100755
> --- a/t/t3507-cherry-pick-conflict.sh
> +++ b/t/t3507-cherry-pick-conflict.sh
> @@ -189,6 +189,46 @@ test_expect_success 'failed cherry-pick registers participants in index' '
>   	test_cmp expected actual
>   '
>   
> +test_expect_success \
> +	'cherry-pick conflict, ensure commit.cleanup = scissors places scissors line properly' '
> +	pristine_detach initial &&
> +	git config commit.cleanup scissors &&
> +	cat <<-EOF >expected &&
> +		picked
> +
> +		# ------------------------ >8 ------------------------
> +		# Do not modify or remove the line above.
> +		# Everything below it will be ignored.
> +		#
> +		# Conflicts:
> +		#	foo
> +		EOF
> +
> +	test_must_fail git cherry-pick picked &&
> +
> +	test_i18ncmp expected .git/MERGE_MSG
> +'
> +
> +test_expect_success \
> +	'cherry-pick conflict, ensure cleanup=scissors places scissors line properly' '
> +	pristine_detach initial &&
> +	git config --unset commit.cleanup &&
> +	cat <<-EOF >expected &&
> +		picked
> +
> +		# ------------------------ >8 ------------------------
> +		# Do not modify or remove the line above.
> +		# Everything below it will be ignored.
> +		#
> +		# Conflicts:
> +		#	foo
> +		EOF
> +
> +	test_must_fail git cherry-pick --cleanup=scissors picked &&
> +
> +	test_i18ncmp expected .git/MERGE_MSG
> +'
> +
>   test_expect_success 'failed cherry-pick describes conflict in work tree' '
>   	pristine_detach initial &&
>   	cat <<-EOF >expected &&
> @@ -335,6 +375,52 @@ test_expect_success 'revert conflict, diff3 -m style' '
>   	test_cmp expected actual
>   '
>   
> +test_expect_success \
> +	'revert conflict, ensure commit.cleanup = scissors places scissors line properly' '
> +	pristine_detach initial &&
> +	git config commit.cleanup scissors &&
> +	cat >expected <<-EOF &&
> +		Revert "picked"
> +
> +		This reverts commit OBJID.
> +
> +		# ------------------------ >8 ------------------------
> +		# Do not modify or remove the line above.
> +		# Everything below it will be ignored.
> +		#
> +		# Conflicts:
> +		#	foo
> +		EOF
> +
> +	test_must_fail git revert picked &&
> +
> +	sed "s/$OID_REGEX/OBJID/" .git/MERGE_MSG >actual &&
> +	test_i18ncmp expected actual
> +'
> +
> +test_expect_success \
> +	'revert conflict, ensure cleanup=scissors places scissors line properly' '
> +	pristine_detach initial &&
> +	git config --unset commit.cleanup &&
> +	cat >expected <<-EOF &&
> +		Revert "picked"
> +
> +		This reverts commit OBJID.
> +
> +		# ------------------------ >8 ------------------------
> +		# Do not modify or remove the line above.
> +		# Everything below it will be ignored.
> +		#
> +		# Conflicts:
> +		#	foo
> +		EOF
> +
> +	test_must_fail git revert --cleanup=scissors picked &&
> +
> +	sed "s/$OID_REGEX/OBJID/" .git/MERGE_MSG >actual &&
> +	test_i18ncmp expected actual
> +'
> +
>   test_expect_success 'failed cherry-pick does not forget -s' '
>   	pristine_detach initial &&
>   	test_must_fail git cherry-pick -s picked &&
> 

  reply	other threads:[~2019-03-07 15:24 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-06 10:30 [PATCH 0/2] cherry-pick/revert cleanup scissors fix Denton Liu
2019-03-06 10:30 ` [PATCH 1/2] t3507: cleanup space after redirection operators Denton Liu
2019-03-06 10:30 ` [PATCH 2/2] cherry-pick/revert: add scissors line on merge conflict Denton Liu
2019-03-06 16:29   ` Phillip Wood
2019-03-07  0:04     ` Denton Liu
2019-03-07  0:16     ` Denton Liu
2019-03-07  6:44 ` [PATCH v2 0/3] cherry-pick/revert cleanup scissors fix Denton Liu
2019-03-07  6:44   ` [PATCH v2 1/3] t3507: cleanup space after redirection operators Denton Liu
2019-03-07  7:34     ` Junio C Hamano
2019-03-07  6:44   ` [PATCH v2 2/3] cherry-pick/revert: add scissors line on merge conflict Denton Liu
2019-03-07  7:52     ` Junio C Hamano
2019-03-07  9:19       ` Denton Liu
2019-03-07  6:44   ` [PATCH v2 3/3] sequencer.c: don't die on invalid cleanup_arg Denton Liu
2019-03-07  8:01     ` Junio C Hamano
2019-03-07  9:58   ` [PATCH v3 0/4] cherry-pick/revert cleanup scissors fix Denton Liu
2019-03-07  9:58     ` [PATCH v3 1/4] merge-options.txt: correct typo Denton Liu
2019-03-08  3:40       ` Junio C Hamano
2019-03-07  9:58     ` [PATCH v3 2/4] t3507: cleanup space after redirection operators Denton Liu
2019-03-07  9:58     ` [PATCH v3 3/4] cherry-pick/revert: add scissors line on merge conflict Denton Liu
2019-03-07 15:24       ` Phillip Wood [this message]
2019-03-07 17:56         ` Denton Liu
2019-03-07 18:36           ` Phillip Wood
2019-03-08  0:09             ` Junio C Hamano
2019-03-07  9:58     ` [PATCH v3 4/4] sequencer.c: don't die on invalid cleanup_arg Denton Liu
2019-03-07 15:21       ` Phillip Wood

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