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[PATCH 09/14] help: add "-a --verbose" to list all commands with synopsis

From
Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Date
May 19, 2018, 04:27 UTC
Message-ID
<20180519042752.8666-10-pclouds@gmail.com>
In-Reply-To
<20180519042752.8666-1-pclouds@gmail.com>

This lists all recognized commands [1] by category. The group order follows closely git.txt.

[1] We may actually show commands that are not built (e.g. if you set NO_PERL you don't have git-instaweb but it's still listed here). I ignore the problem because on Linux a git package could be split anyway. The "git-core" package may not contain git-instaweb even if it's built because it may end up in a separate package. We can't know anyway.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
 Documentation/git-help.txt |  4 +++-
 builtin/help.c             |  7 +++++++
 help.c                     | 16 ++++++++++++++++
 help.h                     |  2 ++
 t/t0012-help.sh            |  9 +++++++++
 5 files changed, 37 insertions(+), 1 deletion(-)
diff --git a/Documentation/git-help.txt b/Documentation/git-help.txt
index 40d328a4b3..a40fc38d8b 100644
--- a/Documentation/git-help.txt
+++ b/Documentation/git-help.txt
@@ -8,7 +8,7 @@ git-help - Display help information about Git
 SYNOPSIS
 --------
 [verse]
-'git help' [-a|--all] [-g|--guide]
+'git help' [-a|--all [--verbose]] [-g|--guide]
 	   [-i|--info|-m|--man|-w|--web] [COMMAND|GUIDE]
 
 DESCRIPTION
@@ -42,6 +42,8 @@ OPTIONS
 --all::
 	Prints all the available commands on the standard output. This
 	option overrides any given command or guide name.
+	When used with `--verbose` print description for all recognized
+	commands.
 
 -g::
 --guides::
diff --git a/builtin/help.c b/builtin/help.c
index 598867cfea..0e0af8426a 100644
--- a/builtin/help.c
+++ b/builtin/help.c
@@ -36,6 +36,7 @@ static const char *html_path;
 
 static int show_all = 0;
 static int show_guides = 0;
+static int verbose;
 static unsigned int colopts;
 static enum help_format help_format = HELP_FORMAT_NONE;
 static int exclude_guides;
@@ -48,6 +49,7 @@ static struct option builtin_help_options[] = {
 			HELP_FORMAT_WEB),
 	OPT_SET_INT('i', "info", &help_format, N_("show info page"),
 			HELP_FORMAT_INFO),
+	OPT__VERBOSE(&verbose, N_("print command description")),
 	OPT_END(),
 };
 
@@ -463,6 +465,11 @@ int cmd_help(int argc, const char **argv, const char *prefix)
 
 	if (show_all) {
 		git_config(git_help_config, NULL);
+		if (verbose) {
+			setup_pager();
+			list_all_cmds_help();
+			return 0;
+		}
 		printf(_("usage: %s%s"), _(git_usage_string), "\n\n");
 		load_command_list("git-", &main_cmds, &other_cmds);
 		list_commands(colopts, &main_cmds, &other_cmds);
diff --git a/help.c b/help.c
index 1117f7d1d1..c7df1d2338 100644
--- a/help.c
+++ b/help.c
@@ -27,6 +27,17 @@ static struct category_description common_categories[] = {
 	{ CAT_remote, N_("collaborate (see also: git help workflows)") },
 	{ 0, NULL }
 };
+static struct category_description main_categories[] = {
+	{ CAT_mainporcelain, N_("Main Porcelain Commands") },
+	{ CAT_ancillarymanipulators, N_("Ancillary Commands / Manipulators") },
+	{ CAT_ancillaryinterrogators, N_("Ancillary Commands / Interrogators") },
+	{ CAT_foreignscminterface, N_("Interacting with Others") },
+	{ CAT_plumbingmanipulators, N_("Low-level Commands / Manipulators") },
+	{ CAT_plumbinginterrogators, N_("Low-level Commands / Interrogators") },
+	{ CAT_synchingrepositories, N_("Low-level Commands / Synching Repositories") },
+	{ CAT_purehelpers, N_("Low-level Commands / Internal Helpers") },
+	{ 0, NULL }
+};
 
 static const char *drop_prefix(const char *name)
 {
@@ -352,6 +363,11 @@ void list_cmds_by_category(struct string_list *list,
 	}
 }
 
+void list_all_cmds_help(void)
+{
+	print_cmd_by_category(main_categories);
+}
+
 int is_in_cmdlist(struct cmdnames *c, const char *s)
 {
 	int i;
diff --git a/help.h b/help.h
index 734bba32d3..40917fc38c 100644
--- a/help.h
+++ b/help.h
@@ -19,6 +19,8 @@ static inline void mput_char(char c, unsigned int num)
 }
 
 extern void list_common_cmds_help(void);
+extern void list_all_cmds_help(void);
+
 extern void list_all_main_cmds(struct string_list *list);
 extern void list_all_other_cmds(struct string_list *list);
 extern void list_cmds_by_category(struct string_list *list,
diff --git a/t/t0012-help.sh b/t/t0012-help.sh
index 3c91a9024a..060df24c2d 100755
--- a/t/t0012-help.sh
+++ b/t/t0012-help.sh
@@ -25,6 +25,15 @@ test_expect_success "setup" '
 	EOF
 '
 
+# make sure to exercise these code paths, the output is a bit tricky
+# to verify
+test_expect_success 'basic help commands' '
+	git help >/dev/null &&
+	git help -a >/dev/null &&
+	git help -g >/dev/null &&
+	git help -av >/dev/null
+'
+
 test_expect_success "works for commands and guides by default" '
 	configure_help &&
 	git help status &&
-- 
2.17.0.705.g3525833791
Previous: Nguyễn Thái Ngọc DuyNext: Nguyễn Thái Ngọc Duy
Message 6 of 40 in “nd/command-list updates”
  1. 00/14 nd/command-list updatesNguyễn Thái Ngọc Duy, May 19, 2018
  2. 01/14 generate-cmds.sh: factor out synopsis extract codeNguyễn Thái Ngọc Duy, May 19, 2018
  3. 02/14 generate-cmds.sh: export all commands to command-list.hNguyễn Thái Ngọc Duy, May 19, 2018
  4. 06/14 git --list-cmds: collect command list in a string_listNguyễn Thái Ngọc Duy, May 19, 2018
  5. 07/14 completion: implement and use --list-cmds=main,othersNguyễn Thái Ngọc Duy, May 19, 2018
  6. 09/14 help: add "-a --verbose" to list all commands with synopsisNguyễn Thái Ngọc Duy, May 19, 2018
  7. 08/14 git: support --list-cmds=list-<category>Nguyễn Thái Ngọc Duy, May 19, 2018
  8. 05/14 git.c: convert --list-* to --list-cmds=*Nguyễn Thái Ngọc Duy, May 19, 2018
  9. 04/14 Remove common-cmds.hNguyễn Thái Ngọc Duy, May 19, 2018
  10. 14/14 completion: allow to customize the completable command listNguyễn Thái Ngọc Duy, May 19, 2018
  11. SZEDER GáborMay 20, 2018
  12. Duy NguyenMay 20, 2018
  13. 13/14 completion: reduce completable command listNguyễn Thái Ngọc Duy, May 19, 2018
  14. SZEDER GáborMay 20, 2018
  15. Junio C HamanoMay 21, 2018
  16. 10/14 help: use command-list.txt for the source of guidesNguyễn Thái Ngọc Duy, May 19, 2018
  17. 03/14 help: use command-list.h for common command listNguyễn Thái Ngọc Duy, May 19, 2018
  18. 11/14 command-list.txt: documentation and guide lineNguyễn Thái Ngọc Duy, May 19, 2018
  19. 12/14 completion: let git provide the completable command listNguyễn Thái Ngọc Duy, May 19, 2018
  20. SZEDER GáborMay 20, 2018
  21. Duy NguyenMay 20, 2018
  22. 00/17 nd/command-list updatesNguyễn Thái Ngọc Duy, May 20, 2018
  23. 01/17 generate-cmds.sh: factor out synopsis extract codeNguyễn Thái Ngọc Duy, May 20, 2018
  24. 02/17 generate-cmds.sh: export all commands to command-list.hNguyễn Thái Ngọc Duy, May 20, 2018
  25. 03/17 help: use command-list.h for common command listNguyễn Thái Ngọc Duy, May 20, 2018
  26. 07/17 completion: implement and use --list-cmds=main,othersNguyễn Thái Ngọc Duy, May 20, 2018
  27. 06/17 git --list-cmds: collect command list in a string_listNguyễn Thái Ngọc Duy, May 20, 2018
  28. 08/17 git: support --list-cmds=list-<category>Nguyễn Thái Ngọc Duy, May 20, 2018
  29. 13/17 completion: reduce completable command listNguyễn Thái Ngọc Duy, May 20, 2018
  30. 14/17 Move declaration for alias.c to alias.hNguyễn Thái Ngọc Duy, May 20, 2018
  31. 15/17 completion: add and use --list-cmds=nohelpersNguyễn Thái Ngọc Duy, May 20, 2018
  32. 12/17 completion: let git provide the completable command listNguyễn Thái Ngọc Duy, May 20, 2018
  33. 11/17 command-list.txt: documentation and guide lineNguyễn Thái Ngọc Duy, May 20, 2018
  34. 10/17 help: use command-list.txt for the source of guidesNguyễn Thái Ngọc Duy, May 20, 2018
  35. Ævar Arnfjörð BjarmasonNov 20, 2018
  36. 17/17 completion: allow to customize the completable command listNguyễn Thái Ngọc Duy, May 20, 2018
  37. 16/17 completion: add and use --list-cmds=aliasNguyễn Thái Ngọc Duy, May 20, 2018
  38. 05/17 git.c: convert --list-* to --list-cmds=*Nguyễn Thái Ngọc Duy, May 20, 2018
  39. 04/17 Remove common-cmds.hNguyễn Thái Ngọc Duy, May 20, 2018
  40. 09/17 help: add "-a --verbose" to list all commands with synopsisNguyễn Thái Ngọc Duy, May 20, 2018

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