Merge branch 'mk/repo-help-strings' into jch

"git repo info -h" and "git repo structure -h" limit their help output
to the part that is specific to the subcommand.

* mk/repo-help-strings:
  repo: show subcommand-specific help text
  repo: factor repo usage strings into shared macros

Author: gitster

builtin/repo.c

@@ -20,11 +20,27 @@
 #include "tree-walk.h"
 #include "utf8.h"
 
+#define REPO_INFO_USAGE \
+	"git repo info [--format=(lines|nul) | -z] [--all | <key>...]", \
+	"git repo info --keys [--format=(lines|nul) | -z]"
+
+#define REPO_STRUCTURE_USAGE \
+	"git repo structure [--format=(table|lines|nul) | -z]"
+
 static const char *const repo_usage[] = {
-	"git repo info [--format=(lines|nul) | -z] [--all | <key>...]",
-	"git repo info --keys [--format=(lines|nul) | -z]",
-	"git repo structure [--format=(table|lines|nul) | -z]",
-	NULL
+	REPO_INFO_USAGE,
+	REPO_STRUCTURE_USAGE,
+	NULL,
+};
+
+static const char *const repo_info_usage[] = {
+	REPO_INFO_USAGE,
+	NULL,
+};
+
+static const char *const repo_structure_usage[] = {
+	REPO_STRUCTURE_USAGE,
+	NULL,
 };
 
 typedef int get_value_fn(struct repository *repo, struct strbuf *buf);
@@ -214,7 +230,7 @@ static int cmd_repo_info(int argc, const char **argv, const char *prefix,
 		OPT_END()
 	};
 
-	argc = parse_options(argc, argv, prefix, options, repo_usage, 0);
+	argc = parse_options(argc, argv, prefix, options, repo_info_usage, 0);
 
 	if (show_keys && (all_keys || argc))
 		die(_("--keys cannot be used with a <key> or --all"));
@@ -879,7 +895,7 @@ static int cmd_repo_structure(int argc, const char **argv, const char *prefix,
 		OPT_END()
 	};
 
-	argc = parse_options(argc, argv, prefix, options, repo_usage, 0);
+	argc = parse_options(argc, argv, prefix, options, repo_structure_usage, 0);
 	if (argc)
 		usage(_("too many arguments"));
 

t/t1900-repo-info.sh

@@ -149,4 +149,10 @@ test_expect_success 'git repo info --keys uses lines as its default output forma
 	test_cmp expect actual
 '
 
+test_expect_success 'git repo info -h shows only repo info usage' '
+	test_must_fail git repo info -h >actual &&
+	test_grep "git repo info" actual &&
+	test_grep ! "git repo structure" actual
+'
+
 test_done

t/t1901-repo-structure.sh

@@ -224,4 +224,10 @@ test_expect_success 'progress meter option' '
 	)
 '
 
+test_expect_success 'git repo structure -h shows only repo structure usage' '
+	test_must_fail git repo structure -h >actual &&
+	test_grep "git repo structure" actual &&
+	test_grep ! "git repo info" actual
+'
+
 test_done