git@vger.kernel.org mailing list mirror (one of many)
 help / color / mirror / code / Atom feed
From: Rohit Ashiwal <rohit.ashiwal265@gmail.com>
To: rohit.ashiwal265@gmail.com
Cc: Johannes.Schindelin@gmx.de, git@vger.kernel.org,
	gitster@pobox.com, martin.agren@gmail.com, newren@gmail.com,
	phillip.wood123@gmail.com, t.gummerer@gmail.com
Subject: [GSoC][PATCH v2 1/6] rebase -i: add --ignore-whitespace flag
Date: Tue, 13 Aug 2019 01:12:55 +0530	[thread overview]
Message-ID: <20190812194301.5655-2-rohit.ashiwal265@gmail.com> (raw)
In-Reply-To: <20190812194301.5655-1-rohit.ashiwal265@gmail.com>

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            | 10 +++-
 builtin/rebase.c                        | 29 +++++++++--
 t/t3422-rebase-incompatible-options.sh  |  1 -
 t/t3433-rebase-options-compatibility.sh | 65 +++++++++++++++++++++++++
 4 files changed, 97 insertions(+), 8 deletions(-)
 create mode 100755 t/t3433-rebase-options-compatibility.sh

diff --git a/Documentation/git-rebase.txt b/Documentation/git-rebase.txt
index 6156609cf7..28e5e08a83 100644
--- a/Documentation/git-rebase.txt
+++ b/Documentation/git-rebase.txt
@@ -371,8 +371,13 @@ 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::
+	This flag is either passed to the 'git apply' program
+	(see linkgit:git-apply[1]), or to 'git merge' program
+	(see linkgit:git-merge[1]) as `-Xignore-space-change`,
+	depending on which backend is selected by other options.
+
 --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 +525,6 @@ The following options:
  * --committer-date-is-author-date
  * --ignore-date
  * --whitespace
- * --ignore-whitespace
  * -C
 
 are incompatible with the following options:
@@ -543,6 +547,8 @@ 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..ab1bbb78ee 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)
 {
+	char *strategy_opts = opts->strategy_opts;
 	struct replay_opts replay = REPLAY_OPTS_INIT;
 
 	replay.action = REPLAY_INTERACTIVE_REBASE;
@@ -114,8 +116,19 @@ 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);
+
+	if (opts->ignore_whitespace) {
+		struct strbuf buf = STRBUF_INIT;
+
+		if (strategy_opts)
+			strbuf_addstr(&buf, strategy_opts);
+
+		strbuf_addstr(&buf, " --ignore-space-change");
+		free(strategy_opts);
+		strategy_opts = strbuf_detach(&buf, NULL);
+	}
+	if (strategy_opts)
+		parse_strategy_opts(&replay, strategy_opts);
 
 	return replay;
 }
@@ -511,6 +524,8 @@ 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 +979,8 @@ 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 +1424,6 @@ 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 +1431,8 @@ 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 +1850,9 @@ 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
-- 
2.21.0


  reply	other threads:[~2019-08-12 19:46 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   ` Rohit Ashiwal [this message]
2019-08-13 12:07     ` [GSoC][PATCH v2 1/6] rebase -i: add --ignore-whitespace flag 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
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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

  List information: http://vger.kernel.org/majordomo-info.html

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20190812194301.5655-2-rohit.ashiwal265@gmail.com \
    --to=rohit.ashiwal265@gmail.com \
    --cc=Johannes.Schindelin@gmx.de \
    --cc=git@vger.kernel.org \
    --cc=gitster@pobox.com \
    --cc=martin.agren@gmail.com \
    --cc=newren@gmail.com \
    --cc=phillip.wood123@gmail.com \
    --cc=t.gummerer@gmail.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
Code repositories for project(s) associated with this public inbox

	https://80x24.org/mirrors/git.git

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).