Commit 822a7d50 authored by Ramsay Allan Jones's avatar Ramsay Allan Jones Committed by Junio C Hamano

Remove cmd_usage() routine and re-organize the help/usage code.

The cmd_usage() routine was causing warning messages due to a NULL
format parameter being passed in three out of four calls. This is a
problem if you want to compile with -Werror. A simple solution is to
simply remove the GNU __attribute__ format pragma from the cmd_usage()
declaration in the header file. The function interface was somewhat
muddled anyway, so re-write the code to finesse the problem.

[jc: this incidentally revealed that t9100 test assumed that the output
 from "git help" to be fixed in stone, but this patch lower-cases
 "Usage" to "usage".  Update the test not to rely on "git help" output.]
Signed-off-by: default avatarRamsay Allan Jones <>
Signed-off-by: default avatarJunio C Hamano <>
parent 8e76483c
......@@ -9,8 +9,6 @@
#include "exec_cmd.h"
#include "common-cmds.h"
static const char git_usage[] =
"Usage: git [--version] [--exec-path[=GIT_EXEC_PATH]] [--help] COMMAND [ ARGS ]";
/* most GUI terminals set COLUMNS (although some don't export it) */
static int term_columns(void)
......@@ -178,31 +176,6 @@ static void list_common_cmds_help(void)
puts("(use 'git help -a' to get a list of all installed git commands)");
void cmd_usage(int show_all, const char *exec_path, const char *fmt, ...)
if (fmt) {
va_list ap;
va_start(ap, fmt);
printf("git: ");
vprintf(fmt, ap);
if (exec_path) {
if (show_all)
list_commands(exec_path, "git-*");
static void show_man_page(const char *git_cmd)
const char *page;
......@@ -221,6 +194,13 @@ static void show_man_page(const char *git_cmd)
execlp("man", "man", page, NULL);
void help_unknown_cmd(const char *cmd)
printf("git: '%s' is not a git-command\n\n", cmd);
int cmd_version(int argc, const char **argv, const char *prefix)
printf("git version %s\n", git_version_string);
......@@ -230,12 +210,24 @@ int cmd_version(int argc, const char **argv, const char *prefix)
int cmd_help(int argc, const char **argv, const char *prefix)
const char *help_cmd = argc > 1 ? argv[1] : NULL;
if (!help_cmd)
cmd_usage(0, git_exec_path(), NULL);
else if (!strcmp(help_cmd, "--all") || !strcmp(help_cmd, "-a"))
cmd_usage(1, git_exec_path(), NULL);
const char *exec_path = git_exec_path();
if (!help_cmd) {
printf("usage: %s\n\n", git_usage_string);
else if (!strcmp(help_cmd, "--all") || !strcmp(help_cmd, "-a")) {
printf("usage: %s\n\n", git_usage_string);
list_commands(exec_path, "git-*");
return 0;
......@@ -5,12 +5,9 @@
#include <limits.h>
extern const char git_version_string[];
extern const char git_usage_string[];
void cmd_usage(int show_all, const char *exec_path, const char *fmt, ...)
#ifdef __GNUC__
__attribute__((__format__(__printf__, 3, 4), __noreturn__))
extern void help_unknown_cmd(const char *cmd);
extern int cmd_help(int argc, const char **argv, const char *prefix);
extern int cmd_version(int argc, const char **argv, const char *prefix);
......@@ -15,6 +15,9 @@
#include "builtin.h"
const char git_usage_string[] =
"git [--version] [--exec-path[=GIT_EXEC_PATH]] [--help] COMMAND [ ARGS ]";
static void prepend_to_path(const char *dir, int len)
const char *old_path = getenv("PATH");
......@@ -78,7 +81,7 @@ static int handle_options(const char*** argv, int* argc)
setenv("GIT_DIR", getcwd(git_dir, 1024), 1);
} else {
fprintf(stderr, "Unknown option: %s\n", cmd);
cmd_usage(0, NULL, NULL);
......@@ -375,7 +378,7 @@ int main(int argc, const char **argv, char **envp)
if (errno == ENOENT)
cmd_usage(0, exec_path, "'%s' is not a git-command", cmd);
fprintf(stderr, "Failed to run command '%s': %s\n",
cmd, strerror(errno));
......@@ -170,7 +170,7 @@ then
test -L $SVN_TREE/"
name='modify a symlink to become a file'
git help > help || true
echo git help > help || true
cp help
git update-index
......@@ -217,10 +217,10 @@ name='check imported tree checksums expected tree checksums'
rm -f expected
if test "$have_utf8" = t
echo tree f735671b89a7eb30cab1d8597de35bd4271ab813 > expected
echo tree bf522353586b1b883488f2bc73dab0d9f774b9a9 > expected
cat >> expected <<\EOF
tree 4b9af72bb861eaed053854ec502cf7df72618f0f
tree 83654bb36f019ae4fe77a0171f81075972087624
tree 031b8d557afc6fea52894eaebb45bec52f1ba6d1
tree 0b094cbff17168f24c302e297f55bfac65eb8bd3
tree d667270a1f7b109f5eb3aaea21ede14b56bfdd6e
......@@ -231,4 +231,3 @@ EOF
test_expect_success "$name" "diff -u a expected"
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