treewide: deprecate git_config_maybe_bool, use git_parse_maybe_bool

The only difference between these is that the former takes an argument
`name` which it ignores completely. Still, the callers are quite careful
to provide reasonable values for it.

Once in-flight topics have landed, we should be able to remove
git_config_maybe_bool. In the meantime, document it as deprecated in the
technical documentation. While at it, document git_parse_maybe_bool.

Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/technical/api-config.txt

@@ -187,6 +187,10 @@ Same as `git_config_bool`, except that integers are returned as-is, and
 an `is_bool` flag is unset.
 
 `git_config_maybe_bool`::
+Deprecated. Use `git_parse_maybe_bool` instead. They are exactly the
+same, except this function takes an unused argument `name`.
+
+`git_parse_maybe_bool`::
 Same as `git_config_bool`, except that it returns -1 on error rather
 than dying.
 

builtin/log.c

@@ -54,7 +54,7 @@ struct line_opt_callback_data {
 
 static int parse_decoration_style(const char *var, const char *value)
 {
-	switch (git_config_maybe_bool(var, value)) {
+	switch (git_parse_maybe_bool(value)) {
 	case 1:
 		return DECORATE_SHORT_REFS;
 	case 0:
@@ -809,7 +809,7 @@ static int git_format_config(const char *var, const char *value, void *cb)
 		return 0;
 	}
 	if (!strcmp(var, "format.from")) {
-		int b = git_config_maybe_bool(var, value);
+		int b = git_parse_maybe_bool(value);
 		free(from);
 		if (b < 0)
 			from = xstrdup(value);

builtin/merge.c

@@ -566,7 +566,7 @@ static int git_merge_config(const char *k, const char *v, void *cb)
 	else if (!strcmp(k, "merge.renormalize"))
 		option_renormalize = git_config_bool(k, v);
 	else if (!strcmp(k, "merge.ff")) {
-		int boolval = git_config_maybe_bool(k, v);
+		int boolval = git_parse_maybe_bool(v);
 		if (0 <= boolval) {
 			fast_forward = boolval ? FF_ALLOW : FF_NO;
 		} else if (v && !strcmp(v, "only")) {
@@ -959,7 +959,7 @@ static int default_edit_option(void)
 		return 0;
 
 	if (e) {
-		int v = git_config_maybe_bool(name, e);
+		int v = git_parse_maybe_bool(e);
 		if (v < 0)
 			die(_("Bad value '%s' in environment '%s'"), e, name);
 		return v;

builtin/pull.c

@@ -36,7 +36,7 @@ enum rebase_type {
 static enum rebase_type parse_config_rebase(const char *key, const char *value,
 		int fatal)
 {
-	int v = git_config_maybe_bool("pull.rebase", value);
+	int v = git_parse_maybe_bool(value);
 
 	if (!v)
 		return REBASE_FALSE;
@@ -271,7 +271,7 @@ static const char *config_get_ff(void)
 	if (git_config_get_value("pull.ff", &value))
 		return NULL;
 
-	switch (git_config_maybe_bool("pull.ff", value)) {
+	switch (git_parse_maybe_bool(value)) {
 	case 0:
 		return "--no-ff";
 	case 1:

builtin/push.c

@@ -480,7 +480,7 @@ static int git_push_config(const char *k, const char *v, void *cb)
 	} else if (!strcmp(k, "push.gpgsign")) {
 		const char *value;
 		if (!git_config_get_value("push.gpgsign", &value)) {
-			switch (git_config_maybe_bool("push.gpgsign", value)) {
+			switch (git_parse_maybe_bool(value)) {
 			case 0:
 				set_push_cert_flags(flags, SEND_PACK_PUSH_CERT_NEVER);
 				break;

builtin/remote.c

@@ -300,7 +300,7 @@ static int config_read_branches(const char *key, const char *value, void *cb)
 			}
 			string_list_append(&info->merge, xstrdup(value));
 		} else {
-			int v = git_config_maybe_bool(orig_key, value);
+			int v = git_parse_maybe_bool(value);
 			if (v >= 0)
 				info->rebase = v;
 			else if (!strcmp(value, "preserve"))

builtin/send-pack.c

@@ -104,7 +104,7 @@ static int send_pack_config(const char *k, const char *v, void *cb)
 	if (!strcmp(k, "push.gpgsign")) {
 		const char *value;
 		if (!git_config_get_value("push.gpgsign", &value)) {
-			switch (git_config_maybe_bool("push.gpgsign", value)) {
+			switch (git_parse_maybe_bool(value)) {
 			case 0:
 				args.push_cert = SEND_PACK_PUSH_CERT_NEVER;
 				break;

config.c

@@ -1617,7 +1617,7 @@ int git_configset_get_maybe_bool(struct config_set *cs, const char *key, int *de
 {
 	const char *value;
 	if (!git_configset_get_value(cs, key, &value)) {
-		*dest = git_config_maybe_bool(key, value);
+		*dest = git_parse_maybe_bool(value);
 		if (*dest == -1)
 			return -1;
 		return 0;

pager.c

@@ -226,7 +226,7 @@ static int pager_command_config(const char *var, const char *value, void *vdata)
 	const char *cmd;
 
 	if (skip_prefix(var, "pager.", &cmd) && !strcmp(cmd, data->cmd)) {
-		int b = git_config_maybe_bool(var, value);
+		int b = git_parse_maybe_bool(value);
 		if (b >= 0)
 			data->want = b;
 		else {

submodule-config.c

@@ -213,7 +213,7 @@ static struct submodule *lookup_or_create_by_name(struct submodule_cache *cache,
 static int parse_fetch_recurse(const char *opt, const char *arg,
 			       int die_on_error)
 {
-	switch (git_config_maybe_bool(opt, arg)) {
+	switch (git_parse_maybe_bool(arg)) {
 	case 1:
 		return RECURSE_SUBMODULES_ON;
 	case 0:
@@ -237,7 +237,7 @@ int parse_fetch_recurse_submodules_arg(const char *opt, const char *arg)
 static int parse_push_recurse(const char *opt, const char *arg,
 			       int die_on_error)
 {
-	switch (git_config_maybe_bool(opt, arg)) {
+	switch (git_parse_maybe_bool(arg)) {
 	case 1:
 		/* There's no simple "on" value when pushing */
 		if (die_on_error)