From: Phillip Wood <phillip.wood123@gmail.com>
To: Rohit Ashiwal <rohit.ashiwal265@gmail.com>
Cc: Johannes.Schindelin@gmx.de, git@vger.kernel.org,
gitster@pobox.com, martin.agren@gmail.com, newren@gmail.com,
t.gummerer@gmail.com
Subject: Re: [PATCH v3 1/6] rebase -i: add --ignore-whitespace flag
Date: Tue, 20 Aug 2019 19:40:54 +0100 [thread overview]
Message-ID: <98aeebc5-fceb-1ce8-9c27-d425c3f6e674@gmail.com> (raw)
In-Reply-To: <20190820034536.13071-2-rohit.ashiwal265@gmail.com>
Hi Rohit
On 20/08/2019 04:45, Rohit Ashiwal wrote:
> There are two backends available for rebasing, viz, the am and the
> interactive. Naturally, there shall be some features that are
> implemented in one but not in the other. One such flag is
> --ignore-whitespace which indicates merge mechanism to treat lines
> with only whitespace changes as unchanged. Wire the interactive
> rebase to also understand the --ignore-whitespace flag by
> translating it to -Xignore-space-change.
>
> Signed-off-by: Rohit Ashiwal <rohit.ashiwal265@gmail.com>
> ---
> Documentation/git-rebase.txt | 13 ++++-
> builtin/rebase.c | 22 +++++++--
> t/t3422-rebase-incompatible-options.sh | 1 -
> t/t3433-rebase-options-compatibility.sh | 65 +++++++++++++++++++++++++
> 4 files changed, 94 insertions(+), 7 deletions(-)
> create mode 100755 t/t3433-rebase-options-compatibility.sh
>
> diff --git a/Documentation/git-rebase.txt b/Documentation/git-rebase.txt
> index 6156609cf7..873eb5768c 100644
> --- a/Documentation/git-rebase.txt
> +++ b/Documentation/git-rebase.txt
> @@ -371,8 +371,16 @@ If either <upstream> or --root is given on the command line, then the
> default is `--no-fork-point`, otherwise the default is `--fork-point`.
>
> --ignore-whitespace::
> + Behaves differently depending on which backend is selected.
> ++
> +'am' backend: When applying a patch, ignore changes in whitespace in
> +context lines if necessary.
> ++
> +'interactive' backend: Treat lines with only whitespace changes as
> +unchanged for the sake of a three-way merge.
> +
Thanks for spelling out exactly what this does. I had not appreciated
the difference before. Does this mean that if I have a branch with some
whitespace cleanups I'll get different results if I rebase it with the
sequencer compared to am? (I suspect from the description that the
sequencer will simply ignore all my whitespace changes)
I think this is ready if we can live with the difference - I'm not
entirely convinced that adding an option with the same name and a
different behavior is going to improve things though.
Best Wishes
Phillip
> --whitespace=<option>::
> - These flag are passed to the 'git apply' program
> + This flag is passed to the 'git apply' program
> (see linkgit:git-apply[1]) that applies the patch.
> +
> See also INCOMPATIBLE OPTIONS below.
> @@ -520,7 +528,6 @@ The following options:
> * --committer-date-is-author-date
> * --ignore-date
> * --whitespace
> - * --ignore-whitespace
> * -C
>
> are incompatible with the following options:
> @@ -543,6 +550,8 @@ In addition, the following pairs of options are incompatible:
> * --preserve-merges and --interactive
> * --preserve-merges and --signoff
> * --preserve-merges and --rebase-merges
> + * --preserve-merges and --ignore-whitespace
> + * --rebase-merges and --ignore-whitespace
> * --rebase-merges and --strategy
> * --rebase-merges and --strategy-option
>
> diff --git a/builtin/rebase.c b/builtin/rebase.c
> index 670096c065..f8a618d54c 100644
> --- a/builtin/rebase.c
> +++ b/builtin/rebase.c
> @@ -79,6 +79,7 @@ struct rebase_options {
> int allow_rerere_autoupdate;
> int keep_empty;
> int autosquash;
> + int ignore_whitespace;
> char *gpg_sign_opt;
> int autostash;
> char *cmd;
> @@ -99,6 +100,7 @@ struct rebase_options {
>
> static struct replay_opts get_replay_opts(const struct rebase_options *opts)
> {
> + struct strbuf strategy_buf = STRBUF_INIT;
> struct replay_opts replay = REPLAY_OPTS_INIT;
>
> replay.action = REPLAY_INTERACTIVE_REBASE;
> @@ -114,9 +116,15 @@ static struct replay_opts get_replay_opts(const struct rebase_options *opts)
> replay.reschedule_failed_exec = opts->reschedule_failed_exec;
> replay.gpg_sign = xstrdup_or_null(opts->gpg_sign_opt);
> replay.strategy = opts->strategy;
> +
> if (opts->strategy_opts)
> - parse_strategy_opts(&replay, opts->strategy_opts);
> + strbuf_addstr(&strategy_buf, opts->strategy_opts);
> + if (opts->ignore_whitespace)
> + strbuf_addstr(&strategy_buf, " --ignore-space-change");
> + if (strategy_buf.len)
> + parse_strategy_opts(&replay, strategy_buf.buf);
>
> + strbuf_release(&strategy_buf);
> return replay;
> }
>
> @@ -511,6 +519,8 @@ int cmd_rebase__interactive(int argc, const char **argv, const char *prefix)
> argc = parse_options(argc, argv, prefix, options,
> builtin_rebase_interactive_usage, PARSE_OPT_KEEP_ARGV0);
>
> + opts.strategy_opts = xstrdup_or_null(opts.strategy_opts);
> +
> if (!is_null_oid(&squash_onto))
> opts.squash_onto = &squash_onto;
>
> @@ -964,6 +974,8 @@ static int run_am(struct rebase_options *opts)
> am.git_cmd = 1;
> argv_array_push(&am.args, "am");
>
> + if (opts->ignore_whitespace)
> + argv_array_push(&am.args, "--ignore-whitespace");
> if (opts->action && !strcmp("continue", opts->action)) {
> argv_array_push(&am.args, "--resolved");
> argv_array_pushf(&am.args, "--resolvemsg=%s", resolvemsg);
> @@ -1407,9 +1419,6 @@ int cmd_rebase(int argc, const char **argv, const char *prefix)
> PARSE_OPT_NOARG, NULL, REBASE_DIFFSTAT },
> OPT_BOOL(0, "signoff", &options.signoff,
> N_("add a Signed-off-by: line to each commit")),
> - OPT_PASSTHRU_ARGV(0, "ignore-whitespace", &options.git_am_opts,
> - NULL, N_("passed to 'git am'"),
> - PARSE_OPT_NOARG),
> OPT_PASSTHRU_ARGV(0, "committer-date-is-author-date",
> &options.git_am_opts, NULL,
> N_("passed to 'git am'"), PARSE_OPT_NOARG),
> @@ -1417,6 +1426,8 @@ int cmd_rebase(int argc, const char **argv, const char *prefix)
> N_("passed to 'git am'"), PARSE_OPT_NOARG),
> OPT_PASSTHRU_ARGV('C', NULL, &options.git_am_opts, N_("n"),
> N_("passed to 'git apply'"), 0),
> + OPT_BOOL(0, "ignore-whitespace", &options.ignore_whitespace,
> + N_("ignore changes in whitespace")),
> OPT_PASSTHRU_ARGV(0, "whitespace", &options.git_am_opts,
> N_("action"), N_("passed to 'git apply'"), 0),
> OPT_BIT('f', "force-rebase", &options.flags,
> @@ -1834,6 +1845,9 @@ int cmd_rebase(int argc, const char **argv, const char *prefix)
> }
>
> if (options.rebase_merges) {
> + if (options.ignore_whitespace)
> + die(_("cannot combine '--rebase-merges' with "
> + "'--ignore-whitespace'"));
> if (strategy_options.nr)
> die(_("cannot combine '--rebase-merges' with "
> "'--strategy-option'"));
> diff --git a/t/t3422-rebase-incompatible-options.sh b/t/t3422-rebase-incompatible-options.sh
> index a5868ea152..4342f79eea 100755
> --- a/t/t3422-rebase-incompatible-options.sh
> +++ b/t/t3422-rebase-incompatible-options.sh
> @@ -61,7 +61,6 @@ test_rebase_am_only () {
> }
>
> test_rebase_am_only --whitespace=fix
> -test_rebase_am_only --ignore-whitespace
> test_rebase_am_only --committer-date-is-author-date
> test_rebase_am_only -C4
>
> diff --git a/t/t3433-rebase-options-compatibility.sh b/t/t3433-rebase-options-compatibility.sh
> new file mode 100755
> index 0000000000..2e16e00a9d
> --- /dev/null
> +++ b/t/t3433-rebase-options-compatibility.sh
> @@ -0,0 +1,65 @@
> +#!/bin/sh
> +#
> +# Copyright (c) 2019 Rohit Ashiwal
> +#
> +
> +test_description='tests to ensure compatibility between am and interactive backends'
> +
> +. ./test-lib.sh
> +
> +# This is a special case in which both am and interactive backends
> +# provide the same output. It was done intentionally because
> +# both the backends fall short of optimal behaviour.
> +test_expect_success 'setup' '
> + git checkout -b topic &&
> + q_to_tab >file <<-\EOF &&
> + line 1
> + Qline 2
> + line 3
> + EOF
> + git add file &&
> + git commit -m "add file" &&
> + cat >file <<-\EOF &&
> + line 1
> + new line 2
> + line 3
> + EOF
> + git commit -am "update file" &&
> + git tag side &&
> +
> + git checkout --orphan master &&
> + sed -e "s/^|//" >file <<-\EOF &&
> + |line 1
> + | line 2
> + |line 3
> + EOF
> + git add file &&
> + git commit -m "add file" &&
> + git tag main
> +'
> +
> +test_expect_success '--ignore-whitespace works with am backend' '
> + cat >expect <<-\EOF &&
> + line 1
> + new line 2
> + line 3
> + EOF
> + test_must_fail git rebase main side &&
> + git rebase --abort &&
> + git rebase --ignore-whitespace main side &&
> + test_cmp expect file
> +'
> +
> +test_expect_success '--ignore-whitespace works with interactive backend' '
> + cat >expect <<-\EOF &&
> + line 1
> + new line 2
> + line 3
> + EOF
> + test_must_fail git rebase --merge main side &&
> + git rebase --abort &&
> + git rebase --merge --ignore-whitespace main side &&
> + test_cmp expect file
> +'
> +
> +test_done
>
next prev parent reply other threads:[~2019-08-20 18:41 UTC|newest]
Thread overview: 96+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-06 17:36 [GSoC][PATCHl 0/6] rebase -i: support more options Rohit Ashiwal
2019-08-06 17:36 ` [GSoC][PATCHl 1/6] rebase -i: add --ignore-whitespace flag Rohit Ashiwal
2019-08-07 5:38 ` Junio C Hamano
2019-08-07 20:25 ` Rohit Ashiwal
2019-08-08 16:44 ` Phillip Wood
2019-08-12 17:43 ` Rohit Ashiwal
2019-08-06 17:36 ` [GSoC][PATCHl 2/6] sequencer: add NULL checks under read_author_script Rohit Ashiwal
2019-08-06 17:36 ` [GSoC][PATCHl 3/6] rebase -i: support --committer-date-is-author-date Rohit Ashiwal
2019-08-08 11:29 ` Phillip Wood
2019-08-08 16:00 ` Junio C Hamano
2019-08-06 17:36 ` [GSoC][PATCHl 4/6] sequencer: rename amend_author to author_to_rename Rohit Ashiwal
2019-08-08 11:30 ` Phillip Wood
2019-08-06 17:36 ` [GSoC][PATCHl 5/6] rebase -i: support --ignore-date Rohit Ashiwal
2019-08-07 19:41 ` Johannes Schindelin
2019-08-07 20:22 ` Junio C Hamano
2019-08-07 20:33 ` Rohit Ashiwal
2019-08-08 11:42 ` Phillip Wood
2019-08-08 16:53 ` Phillip Wood
2019-08-06 17:36 ` [GSoC][PATCHl 6/6] rebase: add --author-date-is-committer-date Rohit Ashiwal
2019-08-08 11:42 ` Phillip Wood
2019-08-12 19:42 ` [GSoC][PATCH v2 0/6] rebase -i: support more options Rohit Ashiwal
2019-08-12 19:42 ` [GSoC][PATCH v2 1/6] rebase -i: add --ignore-whitespace flag Rohit Ashiwal
2019-08-13 12:07 ` Phillip Wood
2019-08-12 19:42 ` [GSoC][PATCH v2 2/6] sequencer: add NULL checks under read_author_script Rohit Ashiwal
2019-08-12 19:42 ` [GSoC][PATCH v2 3/6] rebase -i: support --committer-date-is-author-date Rohit Ashiwal
2019-08-13 10:38 ` Phillip Wood
2019-08-13 12:09 ` Phillip Wood
2019-08-13 17:06 ` Junio C Hamano
2019-08-14 18:38 ` Phillip Wood
2019-08-13 13:35 ` Phillip Wood
2019-08-12 19:42 ` [GSoC][PATCH v2 4/6] sequencer: rename amend_author to author_to_rename Rohit Ashiwal
2019-08-13 13:29 ` Phillip Wood
2019-08-12 19:42 ` [GSoC][PATCH v2 5/6] rebase -i: support --ignore-date Rohit Ashiwal
2019-08-13 13:28 ` Phillip Wood
2019-08-13 17:21 ` Junio C Hamano
2019-08-14 18:47 ` Phillip Wood
2019-08-13 21:45 ` Junio C Hamano
2019-08-14 18:51 ` Phillip Wood
2019-08-14 19:33 ` Junio C Hamano
2019-08-17 9:28 ` Phillip Wood
2019-08-12 19:43 ` [GSoC][PATCH v2 6/6] rebase: add --author-date-is-committer-date Rohit Ashiwal
2019-08-13 17:28 ` Junio C Hamano
2019-08-20 3:45 ` [PATCH v3 0/6] rebase -i: support more options Rohit Ashiwal
2019-08-20 3:45 ` [PATCH v3 1/6] rebase -i: add --ignore-whitespace flag Rohit Ashiwal
2019-08-20 18:40 ` Phillip Wood [this message]
2019-08-20 18:47 ` Rohit Ashiwal
2019-08-20 3:45 ` [PATCH v3 2/6] sequencer: add NULL checks under read_author_script Rohit Ashiwal
2019-08-23 15:20 ` Junio C Hamano
2019-08-20 3:45 ` [PATCH v3 3/6] rebase -i: support --committer-date-is-author-date Rohit Ashiwal
2019-08-20 13:32 ` Phillip Wood
2019-08-20 3:45 ` [PATCH v3 4/6] sequencer: rename amend_author to author_to_rename Rohit Ashiwal
2019-08-20 3:45 ` [PATCH v3 5/6] rebase -i: support --ignore-date Rohit Ashiwal
2019-08-20 13:45 ` Phillip Wood
2019-08-20 17:42 ` Junio C Hamano
2019-08-20 18:30 ` Phillip Wood
2019-08-20 3:45 ` [GSoC][PATCH v2 6/6] rebase: add --author-date-is-committer-date Rohit Ashiwal
2019-08-20 4:00 ` Rohit Ashiwal
2019-08-20 3:45 ` [PATCH v3 6/6] rebase: add --reset-author-date Rohit Ashiwal
2019-08-20 3:54 ` [PATCH v3 0/6] rebase -i: support more options Rohit Ashiwal
2019-08-20 13:56 ` Phillip Wood
2019-08-20 17:53 ` Junio C Hamano
2019-08-20 18:37 ` Phillip Wood
2019-09-07 11:50 ` [PATCH v4 " Rohit Ashiwal
2019-09-07 11:50 ` [PATCH v4 1/6] rebase -i: add --ignore-whitespace flag Rohit Ashiwal
2019-10-04 9:29 ` Phillip Wood
2019-10-05 18:12 ` Elijah Newren
2019-10-06 17:57 ` Rohit Ashiwal
2019-09-07 11:50 ` [PATCH v4 2/6] sequencer: allow callers of read_author_script() to ignore fields Rohit Ashiwal
2019-09-07 11:50 ` [PATCH v4 3/6] rebase -i: support --committer-date-is-author-date Rohit Ashiwal
2019-10-04 9:37 ` Phillip Wood
2019-10-06 17:57 ` Rohit Ashiwal
2019-10-24 13:28 ` Phillip Wood
2019-09-07 11:50 ` [PATCH v4 4/6] sequencer: rename amend_author to author_to_rename Rohit Ashiwal
2019-09-07 11:50 ` [PATCH v4 5/6] rebase -i: support --ignore-date Rohit Ashiwal
2019-09-07 20:56 ` Rohit Ashiwal
2019-09-27 10:00 ` Phillip Wood
2019-10-06 17:57 ` Rohit Ashiwal
2019-10-24 20:36 ` Phillip Wood
2019-09-07 11:50 ` [PATCH v4 6/6] rebase: add --reset-author-date Rohit Ashiwal
2019-09-09 18:02 ` [PATCH v4 0/6] rebase -i: support more options Junio C Hamano
2019-09-09 18:51 ` Phillip Wood
2019-09-09 19:24 ` Junio C Hamano
2019-11-01 13:59 ` [PATCH v5 " Rohit Ashiwal
2019-11-01 13:59 ` [PATCH v5 1/6] rebase -i: add --ignore-whitespace flag Rohit Ashiwal
2019-11-01 13:59 ` [PATCH v5 2/6] sequencer: allow callers of read_author_script() to ignore fields Rohit Ashiwal
2019-11-01 14:00 ` [PATCH v5 3/6] rebase -i: support --committer-date-is-author-date Rohit Ashiwal
2019-11-01 14:00 ` [PATCH v5 4/6] sequencer: rename amend_author to author_to_rename Rohit Ashiwal
2019-11-01 14:00 ` [PATCH v5 5/6] rebase -i: support --ignore-date Rohit Ashiwal
2019-11-02 7:32 ` Junio C Hamano
2019-11-02 7:48 ` Junio C Hamano
2019-11-01 14:00 ` [PATCH v5 6/6] rebase: add --reset-author-date Rohit Ashiwal
2019-11-02 7:34 ` Junio C Hamano
2019-11-21 6:14 ` [PATCH v5 0/6] rebase -i: support more options Junio C Hamano
2019-11-21 8:17 ` Alban Gruin
2019-11-22 6:32 ` Junio C Hamano
2019-11-28 11:14 ` Phillip Wood
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