sequencer: load commit related config

Load default values for message cleanup and gpg signing of commits in
preparation for committing without forking 'git commit'. Note that we
interpret commit.cleanup=scissors to mean COMMIT_MSG_CLEANUP_SPACE to
be consistent with 'git commit'

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin/rebase--helper.c

@@ -9,6 +9,17 @@ static const char * const builtin_rebase_helper_usage[] = {
 	NULL
 };
 
+static int git_rebase_helper_config(const char *k, const char *v, void *cb)
+{
+	int status;
+
+	status = git_sequencer_config(k, v, NULL);
+	if (status)
+		return status;
+
+	return git_default_config(k, v, NULL);
+}
+
 int cmd_rebase__helper(int argc, const char **argv, const char *prefix)
 {
 	struct replay_opts opts = REPLAY_OPTS_INIT;
@@ -39,7 +50,7 @@ int cmd_rebase__helper(int argc, const char **argv, const char *prefix)
 		OPT_END()
 	};
 
-	git_config(git_default_config, NULL);
+	git_config(git_rebase_helper_config, NULL);
 
 	opts.action = REPLAY_INTERACTIVE_REBASE;
 	opts.allow_ff = 1;

builtin/revert.c

@@ -31,6 +31,17 @@ static const char * const cherry_pick_usage[] = {
 	NULL
 };
 
+static int common_config(const char *k, const char *v, void *cb)
+{
+	int status;
+
+	status = git_sequencer_config(k, v, NULL);
+	if (status)
+		return status;
+
+	return git_default_config(k, v, NULL);
+}
+
 static const char *action_name(const struct replay_opts *opts)
 {
 	return opts->action == REPLAY_REVERT ? "revert" : "cherry-pick";
@@ -208,7 +219,7 @@ int cmd_revert(int argc, const char **argv, const char *prefix)
 	if (isatty(0))
 		opts.edit = 1;
 	opts.action = REPLAY_REVERT;
-	git_config(git_default_config, NULL);
+	git_config(common_config, NULL);
 	res = run_sequencer(argc, argv, &opts);
 	if (res < 0)
 		die(_("revert failed"));
@@ -221,7 +232,7 @@ int cmd_cherry_pick(int argc, const char **argv, const char *prefix)
 	int res;
 
 	opts.action = REPLAY_PICK;
-	git_config(git_default_config, NULL);
+	git_config(common_config, NULL);
 	res = run_sequencer(argc, argv, &opts);
 	if (res < 0)
 		die(_("cherry-pick failed"));

sequencer.c

@@ -688,6 +688,40 @@ static int run_git_commit(const char *defmsg, struct replay_opts *opts,
 	return run_command(&cmd);
 }
 
+static enum commit_msg_cleanup_mode default_msg_cleanup =
+						COMMIT_MSG_CLEANUP_NONE;
+static char *default_gpg_sign;
+
+int git_sequencer_config(const char *k, const char *v, void *cb)
+{
+	if (!strcmp(k, "commit.cleanup")) {
+		int status;
+		const char *s;
+
+		status = git_config_string(&s, k, v);
+		if (status)
+			return status;
+
+		if (!strcmp(s, "verbatim"))
+			default_msg_cleanup = COMMIT_MSG_CLEANUP_NONE;
+		else if (!strcmp(s, "whitespace"))
+			default_msg_cleanup = COMMIT_MSG_CLEANUP_SPACE;
+		else if (!strcmp(s, "strip"))
+			default_msg_cleanup = COMMIT_MSG_CLEANUP_ALL;
+		else if (!strcmp(s, "scissors"))
+			default_msg_cleanup = COMMIT_MSG_CLEANUP_SPACE;
+
+		return status;
+	}
+
+	if (!strcmp(k, "commit.gpgsign")) {
+		default_gpg_sign = git_config_bool(k, v) ? "" : NULL;
+		return 0;
+	}
+
+	return git_gpg_config(k, v, NULL);
+}
+
 static int rest_is_empty(const struct strbuf *sb, int start)
 {
 	int i, eol;

sequencer.h

@@ -57,6 +57,7 @@ extern const char sign_off_header[];
 
 void append_signoff(struct strbuf *msgbuf, int ignore_footer, unsigned flag);
 void append_conflicts_hint(struct strbuf *msgbuf);
+int git_sequencer_config(const char *k, const char *v, void *cb);
 
 enum commit_msg_cleanup_mode {
 	COMMIT_MSG_CLEANUP_SPACE,