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help: make option --help open man pages only for Git commands 

If option --help is passed to a Git command, we try to open
the man page of that command.  However, we do it for both commands
and concepts.  Make sure it is an actual command.

This makes "git <concept> --help" not working anymore, while
"git help <concept>" still works.

Signed-off-by: Ralf Thielow <ralf.thielow@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Ralf Thielow 2016-08-26 19:58:36 +02:00 committed by Junio C Hamano
parent af74128f4a
commit 2c6b6d9f7d
2 changed files with 22 additions and 1 deletions
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15
git.c
View File

@ -522,21 +522,34 @@ static void strip_extension(const char **argv)
static void handle_builtin(int argc, const char **argv)
{
struct argv_array args = ARGV_ARRAY_INIT;
const char *cmd;
struct cmd_struct *builtin;
strip_extension(argv);
cmd = argv[0];
/* Turn "git cmd --help" into "git help cmd" */
/* Turn "git cmd --help" into "git help --exclude-guides cmd" */
if (argc > 1 && !strcmp(argv[1], "--help")) {
int i;
argv[1] = argv[0];
argv[0] = cmd = "help";
for (i = 0; i < argc; i++) {
argv_array_push(&args, argv[i]);
if (!i)
argv_array_push(&args, "--exclude-guides");
}
argc++;
argv = args.argv;
}
builtin = get_builtin(cmd);
if (builtin)
exit(run_builtin(builtin, argc, argv));
argv_array_clear(&args);
}
static void execv_dashed_external(const char **argv)

8
t/t0012-help.sh
View File

@ -41,4 +41,12 @@ test_expect_success "--exclude-guides does not work for guides" '
test_must_be_empty test-browser.log
'
test_expect_success "--help does not work for guides" "
cat <<-EOF >expect &&
git: 'revisions' is not a git command. See 'git --help'.
EOF
test_must_fail git revisions --help 2>actual &&
test_i18ncmp expect actual
"
test_done