Merge branch 'js/prepare-sequencer' into pu

Update of the sequencer codebase to make it reusable to reimplement
"rebase -i" continues.

* js/prepare-sequencer: (26 commits)
  SQUASH: nobody uses this function yet
  sequencer: mark all error messages for translation
  sequencer: start error messages consistently with lower case
  sequencer: quote filenames in error messages
  sequencer: mark action_name() for translation
  sequencer: remove overzealous assumption in rebase -i mode
  sequencer: refactor write_message()
  sequencer: left-trim lines read from the script
  sequencer: do not try to commit when there were merge conflicts
  sequencer: support cleaning up commit messages
  sequencer: support amending commits
  sequencer: allow editing the commit message on a case-by-case basis
  sequencer: introduce a helper to read files written by scripts
  sequencer: prepare for rebase -i's commit functionality
  sequencer: remember the onelines when parsing the todo file
  sequencer: refactor the code to obtain a short commit name
  sequencer: get rid of the subcommand field
  sequencer: avoid completely different messages for different actions
  sequencer: strip CR from the todo script
  sequencer: completely revamp the "todo" script parsing
  ...

Author: gitster

builtin/commit.c

@@ -183,7 +183,7 @@ static void determine_whence(struct wt_status *s)
 		whence = FROM_MERGE;
 	else if (file_exists(git_path_cherry_pick_head())) {
 		whence = FROM_CHERRY_PICK;
-		if (file_exists(git_path(SEQ_DIR)))
+		if (file_exists(git_path_seq_dir()))
 			sequencer_in_use = 1;
 	}
 	else

builtin/revert.c

@@ -71,7 +71,7 @@ static void verify_opt_compatible(const char *me, const char *base_opt, ...)
 		die(_("%s: %s cannot be used with %s"), me, this_opt, base_opt);
 }
 
-static void parse_args(int argc, const char **argv, struct replay_opts *opts)
+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);
@@ -115,25 +115,15 @@ static void parse_args(int argc, const char **argv, struct replay_opts *opts)
 	if (opts->keep_redundant_commits)
 		opts->allow_empty = 1;
 
-	/* Set the subcommand */
-	if (cmd == 'q')
-		opts->subcommand = REPLAY_REMOVE_STATE;
-	else if (cmd == 'c')
-		opts->subcommand = REPLAY_CONTINUE;
-	else if (cmd == 'a')
-		opts->subcommand = REPLAY_ROLLBACK;
-	else
-		opts->subcommand = REPLAY_NONE;
-
 	/* Check for incompatible command line arguments */
-	if (opts->subcommand != REPLAY_NONE) {
+	if (cmd) {
 		char *this_operation;
-		if (opts->subcommand == REPLAY_REMOVE_STATE)
+		if (cmd == 'q')
 			this_operation = "--quit";
-		else if (opts->subcommand == REPLAY_CONTINUE)
+		else if (cmd == 'c')
 			this_operation = "--continue";
 		else {
-			assert(opts->subcommand == REPLAY_ROLLBACK);
+			assert(cmd == 'a');
 			this_operation = "--abort";
 		}
 
@@ -156,7 +146,7 @@ static void parse_args(int argc, const char **argv, struct replay_opts *opts)
 				"--edit", opts->edit,
 				NULL);
 
-	if (opts->subcommand != REPLAY_NONE) {
+	if (cmd) {
 		opts->revs = NULL;
 	} else {
 		struct setup_revision_opt s_r_opt;
@@ -174,35 +164,45 @@ static void parse_args(int argc, const char **argv, struct replay_opts *opts)
 
 	if (argc > 1)
 		usage_with_options(usage_str, options);
+
+	/* These option values will be free()d */
+	if (opts->gpg_sign)
+		opts->gpg_sign = xstrdup(opts->gpg_sign);
+	if (opts->strategy)
+		opts->strategy = xstrdup(opts->strategy);
+
+	if (cmd == 'q')
+		return sequencer_remove_state(opts);
+	if (cmd == 'c')
+		return sequencer_continue(opts);
+	if (cmd == 'a')
+		return sequencer_rollback(opts);
+	return sequencer_pick_revisions(opts);
 }
 
 int cmd_revert(int argc, const char **argv, const char *prefix)
 {
-	struct replay_opts opts;
+	struct replay_opts opts = REPLAY_OPTS_INIT;
 	int res;
 
-	memset(&opts, 0, sizeof(opts));
 	if (isatty(0))
 		opts.edit = 1;
 	opts.action = REPLAY_REVERT;
 	git_config(git_default_config, NULL);
-	parse_args(argc, argv, &opts);
-	res = sequencer_pick_revisions(&opts);
+	res = run_sequencer(argc, argv, &opts);
 	if (res < 0)
 		die(_("revert failed"));
 	return res;
 }
 
 int cmd_cherry_pick(int argc, const char **argv, const char *prefix)
 {
-	struct replay_opts opts;
+	struct replay_opts opts = REPLAY_OPTS_INIT;
 	int res;
 
-	memset(&opts, 0, sizeof(opts));
 	opts.action = REPLAY_PICK;
 	git_config(git_default_config, NULL);
-	parse_args(argc, argv, &opts);
-	res = sequencer_pick_revisions(&opts);
+	res = run_sequencer(argc, argv, &opts);
 	if (res < 0)
 		die(_("cherry-pick failed"));
 	return res;