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[PATCH v2 6/9] help: correct usage & behavior of "git help --all"

From
Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Date
Feb 21, 2022, 19:38 UTC
Message-ID
<patch-v2-6.9-868e8a6cf83-20220221T193708Z-avarab@gmail.com>
In-Reply-To
<cover-v2-0.9-00000000000-20220221T193708Z-avarab@gmail.com>

Do the same for the "--all" option that I did for "--guides" in 9856ea6785c (help: correct usage & behavior of "git help --guides", 2021-09-22). I.e. we've documented it as ignoring non-option arguments, let's have it error out instead.

As with other changes made in 62f035aee3f (Merge branch 'ab/help-config-vars', 2021-10-13) this is technically a change in behavior, but in practice it's just a bug fix. We were ignoring this before, but by erroring we can simplify our documentation and synopsis, as well as avoid user confusion as they wonder what the difference between e.g. "git help --all" and "git help --all status" is (there wasn't any difference).

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
 Documentation/git-help.txt | 5 ++---
 builtin/help.c             | 5 +++--
 t/t0012-help.sh            | 3 +++
 3 files changed, 8 insertions(+), 5 deletions(-)
diff --git a/Documentation/git-help.txt b/Documentation/git-help.txt
index cf1d53e9499..d07590c8ff7 100644
--- a/Documentation/git-help.txt
+++ b/Documentation/git-help.txt
@@ -9,7 +9,7 @@ SYNOPSIS
 --------
 [verse]
 'git help' [-a|--all] [--[no-]verbose]
-	   [[-i|--info] [-m|--man] [-w|--web]] [<command>|<guide>]
+'git help' [[-i|--info] [-m|--man] [-w|--web]] [<command>|<guide>]
 'git help' [-g|--guides]
 'git help' [-c|--config]
 
@@ -46,8 +46,7 @@ OPTIONS
 -------
 -a::
 --all::
-	Prints all the available commands on the standard output. This
-	option overrides any given command or guide name.
+	Prints all the available commands on the standard output.
 
 --verbose::
 	When used with `--all` print description for all recognized
diff --git a/builtin/help.c b/builtin/help.c
index 1c1581ef850..b682446bbf5 100644
--- a/builtin/help.c
+++ b/builtin/help.c
@@ -75,8 +75,8 @@ static struct option builtin_help_options[] = {
 };
 
 static const char * const builtin_help_usage[] = {
-	N_("git help [-a|--all] [--[no-]verbose]]\n"
-	   "         [[-i|--info] [-m|--man] [-w|--web]] [<command>]"),
+	N_("git help [-a|--all] [--[no-]verbose]]"),
+	N_("git help [[-i|--info] [-m|--man] [-w|--web]] [<command>]"),
 	N_("git help [-g|--guides]"),
 	N_("git help [-c|--config]"),
 	NULL
@@ -594,6 +594,7 @@ int cmd_help(int argc, const char **argv, const char *prefix)
 
 	switch (cmd_mode) {
 	case HELP_ACTION_ALL:
+		opt_mode_usage(argc, "--all");
 		if (verbose) {
 			setup_pager();
 			list_all_cmds_help();
diff --git a/t/t0012-help.sh b/t/t0012-help.sh
index 9ac3f5d3c4b..c87730aa920 100755
--- a/t/t0012-help.sh
+++ b/t/t0012-help.sh
@@ -35,6 +35,9 @@ test_expect_success 'basic help commands' '
 '
 
 test_expect_success 'invalid usage' '
+	test_expect_code 129 git help -a add &&
+	test_expect_code 129 git help --all add &&
+
 	test_expect_code 129 git help -g add &&
 	test_expect_code 129 git help -a -c &&
 
-- 
2.35.1.1132.ga1fe46f8690
Previous: Ævar Arnfjörð BjarmasonNext: Junio C Hamano
Message 18 of 29 in “help: test and fix small "help -g" regression”
  1. 0/7 help: test and fix small "help -g" regressionÆvar Arnfjörð Bjarmason, Dec 28, 2021
  2. 1/7 help doc: add missing "]" to "[-a|--all]"Ævar Arnfjörð Bjarmason, Dec 28, 2021
  3. 2/7 help.c: use puts() instead of printf{,_ln}() for consistencyÆvar Arnfjörð Bjarmason, Dec 28, 2021
  4. 3/7 help tests: test "git" and "git help [-a|-g] spacingÆvar Arnfjörð Bjarmason, Dec 28, 2021
  5. 4/7 help.c: split up list_all_cmds_help() functionÆvar Arnfjörð Bjarmason, Dec 28, 2021
  6. 5/7 help: error if [-a|-g|-c] and [-i|-m|-w] are combinedÆvar Arnfjörð Bjarmason, Dec 28, 2021
  7. Eric SunshineDec 28, 2021
  8. Ævar Arnfjörð BjarmasonDec 29, 2021
  9. 6/7 help: add --no-[external-commands|aliases] for use with --allÆvar Arnfjörð Bjarmason, Dec 28, 2021
  10. Eric SunshineDec 28, 2021
  11. 7/7 help: don't print "\n" before single-section outputÆvar Arnfjörð Bjarmason, Dec 28, 2021
  12. 0/9 help: tests, parse_options() sanity, fix "help -g" regressionÆvar Arnfjörð Bjarmason, Feb 21, 2022
  13. 1/9 help doc: add missing "]" to "[-a|--all]"Ævar Arnfjörð Bjarmason, Feb 21, 2022
  14. 2/9 help.c: use puts() instead of printf{,_ln}() for consistencyÆvar Arnfjörð Bjarmason, Feb 21, 2022
  15. Junio C HamanoFeb 23, 2022
  16. Ævar Arnfjörð BjarmasonFeb 23, 2022
  17. 3/9 help tests: test "git" and "git help [-a|-g] spacingÆvar Arnfjörð Bjarmason, Feb 21, 2022
  18. 6/9 help: correct usage & behavior of "git help --all"Ævar Arnfjörð Bjarmason, Feb 21, 2022
  19. Junio C HamanoFeb 23, 2022
  20. 4/9 help.c: split up list_all_cmds_help() functionÆvar Arnfjörð Bjarmason, Feb 21, 2022
  21. Junio C HamanoFeb 23, 2022
  22. 7/9 help: error if [-a|-g|-c] and [-i|-m|-w] are combinedÆvar Arnfjörð Bjarmason, Feb 21, 2022
  23. Junio C HamanoFeb 23, 2022
  24. 9/9 help: don't print "\n" before single-section outputÆvar Arnfjörð Bjarmason, Feb 21, 2022
  25. Junio C HamanoFeb 23, 2022
  26. 8/9 help: add --no-[external-commands|aliases] for use with --allÆvar Arnfjörð Bjarmason, Feb 21, 2022
  27. Junio C HamanoFeb 23, 2022
  28. 5/9 help: note the option name on option incompatibilityÆvar Arnfjörð Bjarmason, Feb 21, 2022
  29. Junio C HamanoFeb 23, 2022

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