[PATCH/RFC 2/5] git.c: implement --list-cmds=all and use it in git-completion.bash

[Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>]

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>
---
 contrib/completion/git-completion.bash |  2 +-
 git.c                                  |  2 ++
 help.c                                 | 15 +++++++++++++++
 help.h                                 |  1 +
 4 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/contrib/completion/git-completion.bash b/contrib/completion/git-completion.bash
index c7957f0a90..e0f545819d 100644
--- a/contrib/completion/git-completion.bash
+++ b/contrib/completion/git-completion.bash
@@ -833,7 +833,7 @@ __git_commands () {
 	then
 		printf "%s" "${GIT_TESTING_COMMAND_COMPLETION}"
 	else
-		git help -a|egrep '^  [a-zA-Z0-9]'
+		git --list-cmds=all
 	fi
 }
 
diff --git a/git.c b/git.c
index f350002260..2e0c5e17e2 100644
--- a/git.c
+++ b/git.c
@@ -208,6 +208,8 @@ static int handle_options(const char ***argv, int *argc, int *envchanged)
 		} else if (skip_prefix(cmd, "--list-cmds=", &cmd)) {
 			if (!strcmp(cmd, "builtins"))
 				list_builtins();
+			else if (!strcmp(cmd, "all"))
+				list_all_cmds();
 			else
 				die("unsupported command listing type '%s'", cmd);
 			exit(0);
diff --git a/help.c b/help.c
index 60071a9bea..f3f35dfbb1 100644
--- a/help.c
+++ b/help.c
@@ -228,6 +228,21 @@ void list_common_cmds_help(void)
 	}
 }
 
+void list_all_cmds(void)
+{
+	struct cmdnames main_cmds, other_cmds;
+	int i;
+
+	memset(&main_cmds, 0, sizeof(main_cmds));
+	memset(&other_cmds, 0, sizeof(other_cmds));
+	load_command_list("git-", &main_cmds, &other_cmds);
+
+	for (i = 0; i < main_cmds.cnt; i++)
+		puts(main_cmds.names[i]->name);
+	for (i = 0; i < other_cmds.cnt; i++)
+		puts(other_cmds.names[i]->name);
+}
+
 int is_in_cmdlist(struct cmdnames *c, const char *s)
 {
 	int i;
diff --git a/help.h b/help.h
index b21d7c94e8..0bf29f8dc5 100644
--- a/help.h
+++ b/help.h
@@ -17,6 +17,7 @@ static inline void mput_char(char c, unsigned int num)
 }
 
 extern void list_common_cmds_help(void);
+extern void list_all_cmds(void);
 extern const char *help_unknown_cmd(const char *cmd);
 extern void load_command_list(const char *prefix,
 			      struct cmdnames *main_cmds,
-- 
2.17.0.rc0.348.gd5a49e0b6f