From 9856ea6785c3dcd19ffb3946c6a9adbd16d9c1da Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=86var=20Arnfj=C3=B6r=C3=B0=20Bjarmason?= Date: Wed, 22 Sep 2021 00:40:32 +0200 Subject: [PATCH] help: correct usage & behavior of "git help --guides" MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit As noted in 65f98358c0c (builtin/help.c: add --guide option, 2013-04-02) and a133737b809 (doc: include --guide option description for "git help", 2013-04-02) which introduced the --guide option, it cannot be combined with e.g. . Change the command and the "SYNOPSIS" section to reflect that desired behavior. Now that we assert this in code we don't need to exhaustively describe the previous confusing behavior in the documentation either, instead of silently ignoring the provided argument we'll now error out. The "We're done. Ignore any remaining args" comment added in 15f7d494380 (builtin/help.c: split "-a" processing into two, 2013-04-02) can now be removed, it's obvious that we're asserting the behavior with the check of "argc". The "--config" option is still missing from the synopsis, it will be added in a subsequent commit where we'll fix bugs in its implementation. Signed-off-by: Ævar Arnfjörð Bjarmason Signed-off-by: Junio C Hamano --- Documentation/git-help.txt | 6 +++--- builtin/help.c | 11 +++++++---- t/t0012-help.sh | 4 ++++ 3 files changed, 14 insertions(+), 7 deletions(-) diff --git a/Documentation/git-help.txt b/Documentation/git-help.txt index 568a0b606f..cb8e3d4da9 100644 --- a/Documentation/git-help.txt +++ b/Documentation/git-help.txt @@ -8,8 +8,9 @@ git-help - Display help information about Git SYNOPSIS -------- [verse] -'git help' [-a|--all [--[no-]verbose]] [-g|--guides] +'git help' [-a|--all [--[no-]verbose]] [[-i|--info] [-m|--man] [-w|--web]] [COMMAND|GUIDE] +'git help' [-g|--guides] DESCRIPTION ----------- @@ -58,8 +59,7 @@ OPTIONS -g:: --guides:: - Prints a list of the Git concept guides on the standard output. This - option overrides any given command or guide name. + Prints a list of the Git concept guides on the standard output. -i:: --info:: diff --git a/builtin/help.c b/builtin/help.c index 44ea2798cd..51b18c291d 100644 --- a/builtin/help.c +++ b/builtin/help.c @@ -59,8 +59,9 @@ static struct option builtin_help_options[] = { }; static const char * const builtin_help_usage[] = { - N_("git help [-a|--all] [-g|--guides] [--[no-]verbose]]\n" + N_("git help [-a|--all] [--[no-]verbose]]\n" " [[-i|--info] [-m|--man] [-w|--web]] []"), + N_("git help [-g|--guides]"), NULL }; @@ -552,6 +553,11 @@ int cmd_help(int argc, const char **argv, const char *prefix) builtin_help_usage, 0); parsed_help_format = help_format; + /* Options that take no further arguments */ + if (argc && show_guides) + usage_msg_opt(_("--guides cannot be combined with other options"), + builtin_help_usage, builtin_help_options); + if (show_all) { git_config(git_help_config, NULL); if (verbose) { @@ -582,9 +588,6 @@ int cmd_help(int argc, const char **argv, const char *prefix) if (show_all || show_guides) { printf("%s\n", _(git_more_info_string)); - /* - * We're done. Ignore any remaining args - */ return 0; } diff --git a/t/t0012-help.sh b/t/t0012-help.sh index 5679e29c62..0525ec3ee5 100755 --- a/t/t0012-help.sh +++ b/t/t0012-help.sh @@ -34,6 +34,10 @@ test_expect_success 'basic help commands' ' git help -a >/dev/null ' +test_expect_success 'invalid usage' ' + test_expect_code 129 git help -g add +' + test_expect_success "works for commands and guides by default" ' configure_help && git help status &&