Merge branch 'jc/rev-parse-argh-dashed-multi-words'

Make sure that the help text given to describe the "<param>" part
of the "git cmd --option=<param>" does not contain SP or _,
e.g. "--gpg-sign=<key-id>" option for "git commit" is not spelled
as "--gpg-sign=<key id>".

* jc/rev-parse-argh-dashed-multi-words:
  parse-options: make sure argh string does not have SP or _
  update-index: teach --cacheinfo a new syntax "mode,sha1,path"
  parse-options: multi-word argh should use dash to separate words

17 files changed, 77 insertions, 29 deletions

diff --git a/Documentation/git-cherry-pick.txt b/Documentation/git-cherry-pick.txt
index f1e6b2fd6d..1c03c792b0 100644
--- a/Documentation/git-cherry-pick.txt
+++ b/Documentation/git-cherry-pick.txt
@@ -9,7 +9,7 @@ SYNOPSIS
 --------
 [verse]
 'git cherry-pick' [--edit] [-n] [-m parent-number] [-s] [-x] [--ff]
-		  [-S[<keyid>]] <commit>...
+		  [-S[<key-id>]] <commit>...
 'git cherry-pick' --continue
 'git cherry-pick' --quit
 'git cherry-pick' --abort
@@ -101,8 +101,8 @@ effect to your index in a row.
 --signoff::
 	Add Signed-off-by line at the end of the commit message.
 
--S[<keyid>]::
---gpg-sign[=<keyid>]::
+-S[<key-id>]::
+--gpg-sign[=<key-id>]::
 	GPG-sign commits.
 
 --ff::
diff --git a/Documentation/git-commit.txt b/Documentation/git-commit.txt
index 429267abf6..0bbc8f55f9 100644
--- a/Documentation/git-commit.txt
+++ b/Documentation/git-commit.txt
@@ -13,7 +13,7 @@ SYNOPSIS
 	   [-F <file> | -m <msg>] [--reset-author] [--allow-empty]
 	   [--allow-empty-message] [--no-verify] [-e] [--author=<author>]
 	   [--date=<date>] [--cleanup=<mode>] [--[no-]status]
-	   [-i | -o] [-S[<keyid>]] [--] [<file>...]
+	   [-i | -o] [-S[<key-id>]] [--] [<file>...]
 
 DESCRIPTION
 -----------
diff --git a/Documentation/git-merge.txt b/Documentation/git-merge.txt
index 439545926e..a3c1fa332a 100644
--- a/Documentation/git-merge.txt
+++ b/Documentation/git-merge.txt
@@ -10,7 +10,7 @@ SYNOPSIS
 --------
 [verse]
 'git merge' [-n] [--stat] [--no-commit] [--squash] [--[no-]edit]
-	[-s <strategy>] [-X <strategy-option>] [-S[<keyid>]]
+	[-s <strategy>] [-X <strategy-option>] [-S[<key-id>]]
 	[--[no-]rerere-autoupdate] [-m <msg>] [<commit>...]
 'git merge' <msg> HEAD <commit>...
 'git merge' --abort
diff --git a/Documentation/git-notes.txt b/Documentation/git-notes.txt
index 84bb0fecb0..310f0a5e8c 100644
--- a/Documentation/git-notes.txt
+++ b/Documentation/git-notes.txt
@@ -14,7 +14,7 @@ SYNOPSIS
 'git notes' append [-F <file> | -m <msg> | (-c | -C) <object>] [<object>]
 'git notes' edit [<object>]
 'git notes' show [<object>]
-'git notes' merge [-v | -q] [-s <strategy> ] <notes_ref>
+'git notes' merge [-v | -q] [-s <strategy> ] <notes-ref>
 'git notes' merge --commit [-v | -q]
 'git notes' merge --abort [-v | -q]
 'git notes' remove [--ignore-missing] [--stdin] [<object>...]
diff --git a/Documentation/git-rev-parse.txt b/Documentation/git-rev-parse.txt
index e05e6b3593..c452f33a36 100644
--- a/Documentation/git-rev-parse.txt
+++ b/Documentation/git-rev-parse.txt
@@ -290,14 +290,14 @@ The lines after the separator describe the options.
 Each line of options has this format:
 
 ------------
-<opt_spec><flags>*<arg_hint>? SP+ help LF
+<opt-spec><flags>*<arg-hint>? SP+ help LF
 ------------
 
-`<opt_spec>`::
+`<opt-spec>`::
 	its format is the short option character, then the long option name
 	separated by a comma. Both parts are not required, though at least one
 	is necessary. `h,help`, `dry-run` and `f` are all three correct
-	`<opt_spec>`.
+	`<opt-spec>`.
 
 `<flags>`::
 	`<flags>` are of `*`, `=`, `?` or `!`.
@@ -313,11 +313,11 @@ Each line of options has this format:
 
 	* Use `!` to not make the corresponding negated long option available.
 
-`<arg_hint>`::
-	`<arg_hint>`, if specified, is used as a name of the argument in the
-	help output, for options that take arguments. `<arg_hint>` is
-	terminated by the first whitespace. When you need to use space in the
-	argument hint use dash instead.
+`<arg-hint>`::
+	`<arg-hint>`, if specified, is used as a name of the argument in the
+	help output, for options that take arguments. `<arg-hint>` is
+	terminated by the first whitespace.  It is customary to use a
+	dash to separate words in a multi-word argument hint.
 
 The remainder of the line, after stripping the spaces, is used
 as the help associated to the option.
diff --git a/Documentation/git-revert.txt b/Documentation/git-revert.txt
index 9eb83f01a4..cceb5f2f7f 100644
--- a/Documentation/git-revert.txt
+++ b/Documentation/git-revert.txt
@@ -8,7 +8,7 @@ git-revert - Revert some existing commits
 SYNOPSIS
 --------
 [verse]
-'git revert' [--[no-]edit] [-n] [-m parent-number] [-s] [-S[<keyid>]] <commit>...
+'git revert' [--[no-]edit] [-n] [-m parent-number] [-s] [-S[<key-id>]] <commit>...
 'git revert' --continue
 'git revert' --quit
 'git revert' --abort
@@ -80,8 +80,8 @@ more details.
 This is useful when reverting more than one commits'
 effect to your index in a row.
 
--S[<keyid>]::
---gpg-sign[=<keyid>]::
+-S[<key-id>]::
+--gpg-sign[=<key-id>]::
 	GPG-sign commits.
 
 -s::
diff --git a/Documentation/git-update-index.txt b/Documentation/git-update-index.txt
index e0a87029cd..d6de4a008c 100644
--- a/Documentation/git-update-index.txt
+++ b/Documentation/git-update-index.txt
@@ -12,7 +12,7 @@ SYNOPSIS
 'git update-index'
 	     [--add] [--remove | --force-remove] [--replace]
 	     [--refresh] [-q] [--unmerged] [--ignore-missing]
-	     [(--cacheinfo <mode> <object> <file>)...]
+	     [(--cacheinfo <mode>,<object>,<file>)...]
 	     [--chmod=(+|-)x]
 	     [--[no-]assume-unchanged]
 	     [--[no-]skip-worktree]
@@ -68,8 +68,12 @@ OPTIONS
 --ignore-missing::
 	Ignores missing files during a --refresh
 
+--cacheinfo <mode>,<object>,<path>::
 --cacheinfo <mode> <object> <path>::
-	Directly insert the specified info into the index.
+	Directly insert the specified info into the index.  For
+	backward compatibility, you can also give these three
+	arguments as three separate parameters, but new users are
+	encouraged to use a single-parameter form.
 
 --index-info::
         Read index information from stdin.
diff --git a/builtin/checkout.c b/builtin/checkout.c
index 1b86d9c868..5b07757d4f 100644
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -1095,7 +1095,7 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
 		OPT_BOOL(0, "detach", &opts.force_detach, N_("detach the HEAD at named commit")),
 		OPT_SET_INT('t', "track",  &opts.track, N_("set upstream info for new branch"),
 			BRANCH_TRACK_EXPLICIT),
-		OPT_STRING(0, "orphan", &opts.new_orphan_branch, N_("new branch"), N_("new unparented branch")),
+		OPT_STRING(0, "orphan", &opts.new_orphan_branch, N_("new-branch"), N_("new unparented branch")),
 		OPT_SET_INT('2', "ours", &opts.writeout_stage, N_("checkout our version for unmerged files"),
 			    2),
 		OPT_SET_INT('3', "theirs", &opts.writeout_stage, N_("checkout their version for unmerged files"),
diff --git a/builtin/commit.c b/builtin/commit.c
index d9550c54d0..215b5bec19 100644
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -1501,7 +1501,7 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
 		OPT_BOOL('e', "edit", &edit_flag, N_("force edit of commit")),
 		OPT_STRING(0, "cleanup", &cleanup_arg, N_("default"), N_("how to strip spaces and #comments from message")),
 		OPT_BOOL(0, "status", &include_status, N_("include status in commit message template")),
-		{ OPTION_STRING, 'S', "gpg-sign", &sign_commit, N_("key id"),
+		{ OPTION_STRING, 'S', "gpg-sign", &sign_commit, N_("key-id"),
 		  N_("GPG sign commit"), PARSE_OPT_OPTARG, NULL, (intptr_t) "" },
 		/* end commit message options */
 
diff --git a/builtin/merge.c b/builtin/merge.c
index e15d0e145a..66d8843301 100644
--- a/builtin/merge.c
+++ b/builtin/merge.c
@@ -220,7 +220,7 @@ static struct option builtin_merge_options[] = {
 	OPT_BOOL(0, "abort", &abort_current_merge,
 		N_("abort the current in-progress merge")),
 	OPT_SET_INT(0, "progress", &show_progress, N_("force progress reporting"), 1),
-	{ OPTION_STRING, 'S', "gpg-sign", &sign_commit, N_("key id"),
+	{ OPTION_STRING, 'S', "gpg-sign", &sign_commit, N_("key-id"),
 	  N_("GPG sign commit"), PARSE_OPT_OPTARG, NULL, (intptr_t) "" },
 	OPT_BOOL(0, "overwrite-ignore", &overwrite_ignore, N_("update ignored files (default)")),
 	OPT_END()
diff --git a/builtin/notes.c b/builtin/notes.c
index bb89930373..39c8573cde 100644
--- a/builtin/notes.c
+++ b/builtin/notes.c
@@ -939,7 +939,7 @@ int cmd_notes(int argc, const char **argv, const char *prefix)
 	int result;
 	const char *override_notes_ref = NULL;
 	struct option options[] = {
-		OPT_STRING(0, "ref", &override_notes_ref, N_("notes_ref"),
+		OPT_STRING(0, "ref", &override_notes_ref, N_("notes-ref"),
 			   N_("use notes from <notes_ref>")),
 		OPT_END()
 	};
diff --git a/builtin/revert.c b/builtin/revert.c
index 065d88dd05..f9ed5bd5d0 100644
--- a/builtin/revert.c
+++ b/builtin/revert.c
@@ -89,7 +89,7 @@ static void parse_args(int argc, const char **argv, struct replay_opts *opts)
 		OPT_STRING(0, "strategy", &opts->strategy, N_("strategy"), N_("merge strategy")),
 		OPT_CALLBACK('X', "strategy-option", &opts, N_("option"),
 			N_("option for merge strategy"), option_parse_x),
-		{ OPTION_STRING, 'S', "gpg-sign", &opts->gpg_sign, N_("key id"),
+		{ OPTION_STRING, 'S', "gpg-sign", &opts->gpg_sign, N_("key-id"),
 		  N_("GPG sign commit"), PARSE_OPT_OPTARG, NULL, (intptr_t) "" },
 		OPT_END(),
 		OPT_END(),
diff --git a/builtin/tag.c b/builtin/tag.c
index 40356e3e41..6c7c6bde9d 100644
--- a/builtin/tag.c
+++ b/builtin/tag.c
@@ -513,7 +513,7 @@ int cmd_tag(int argc, const char **argv, const char *prefix)
 		OPT_BOOL('s', "sign", &opt.sign, N_("annotated and GPG-signed tag")),
 		OPT_STRING(0, "cleanup", &cleanup_arg, N_("mode"),
 			N_("how to strip spaces and #comments from message")),
-		OPT_STRING('u', "local-user", &keyid, N_("key id"),
+		OPT_STRING('u', "local-user", &keyid, N_("key-id"),
 					N_("use another key to sign the tag")),
 		OPT__FORCE(&force, N_("replace the tag if exists")),
 		OPT_COLUMN(0, "column", &colopts, N_("show tag list in columns")),
diff --git a/builtin/update-index.c b/builtin/update-index.c
index d12ad95f3e..ba54e19cd5 100644
--- a/builtin/update-index.c
+++ b/builtin/update-index.c
@@ -629,14 +629,42 @@ static int resolve_undo_clear_callback(const struct option *opt,
 	return 0;
 }
 
+static int parse_new_style_cacheinfo(const char *arg,
+				     unsigned int *mode,
+				     unsigned char sha1[],
+				     const char **path)
+{
+	unsigned long ul;
+	char *endp;
+
+	errno = 0;
+	ul = strtoul(arg, &endp, 8);
+	if (errno || endp == arg || *endp != ',' || (unsigned int) ul != ul)
+		return -1; /* not a new-style cacheinfo */
+	*mode = ul;
+	endp++;
+	if (get_sha1_hex(endp, sha1) || endp[40] != ',')
+		return -1;
+	*path = endp + 41;
+	return 0;
+}
+
 static int cacheinfo_callback(struct parse_opt_ctx_t *ctx,
 				const struct option *opt, int unset)
 {
 	unsigned char sha1[20];
 	unsigned int mode;
+	const char *path;
 
+	if (!parse_new_style_cacheinfo(ctx->argv[1], &mode, sha1, &path)) {
+		if (add_cacheinfo(mode, sha1, path, 0))
+			die("git update-index: --cacheinfo cannot add %s", path);
+		ctx->argv++;
+		ctx->argc--;
+		return 0;
+	}
 	if (ctx->argc <= 3)
-		return error("option 'cacheinfo' expects three arguments");
+		return error("option 'cacheinfo' expects <mode>,<sha1>,<path>");
 	if (strtoul_ui(*++ctx->argv, 8, &mode) ||
 	    get_sha1_hex(*++ctx->argv, sha1) ||
 	    add_cacheinfo(mode, sha1, *++ctx->argv, 0))
@@ -740,9 +768,9 @@ int cmd_update_index(int argc, const char **argv, const char *prefix)
 			PARSE_OPT_NOARG | PARSE_OPT_NONEG,
 			really_refresh_callback},
 		{OPTION_LOWLEVEL_CALLBACK, 0, "cacheinfo", NULL,
-			N_("<mode> <object> <path>"),
+			N_("<mode>,<object>,<path>"),
 			N_("add the specified entry to the index"),
-			PARSE_OPT_NOARG |	/* disallow --cacheinfo=<mode> form */
+			PARSE_OPT_NOARG | /* disallow --cacheinfo=<mode> form */
 			PARSE_OPT_NONEG | PARSE_OPT_LITERAL_ARGHELP,
 			(parse_opt_cb *) cacheinfo_callback},
 		{OPTION_CALLBACK, 0, "chmod", &set_executable_bit, N_("(+/-)x"),
diff --git a/parse-options.c b/parse-options.c
index a5fa0b8938..c81d3a0655 100644
--- a/parse-options.c
+++ b/parse-options.c
@@ -375,6 +375,9 @@ static void parse_options_check(const struct option *opts)
 		default:
 			; /* ok. (usually accepts an argument) */
 		}
+		if (opts->argh &&
+		    strcspn(opts->argh, " _") != strlen(opts->argh))
+			err |= optbug(opts, "multi-word argh should use dash to separate words");
 	}
 	if (err)
 		exit(128);
diff --git a/parse-options.h b/parse-options.h
index d670cb9669..8fa02dc9a9 100644
--- a/parse-options.h
+++ b/parse-options.h
@@ -143,7 +143,7 @@ struct option {
 	{ OPTION_CALLBACK, (s), (l), (v), N_("time"),(h), 0,	\
 	  parse_opt_approxidate_cb }
 #define OPT_EXPIRY_DATE(s, l, v, h) \
-	{ OPTION_CALLBACK, (s), (l), (v), N_("expiry date"),(h), 0,	\
+	{ OPTION_CALLBACK, (s), (l), (v), N_("expiry-date"),(h), 0,	\
 	  parse_opt_expiry_date_cb }
 #define OPT_CALLBACK(s, l, v, a, h, f) \
 	{ OPTION_CALLBACK, (s), (l), (v), (a), (h), 0, (f) }
diff --git a/t/t2107-update-index-basic.sh b/t/t2107-update-index-basic.sh
index a6405d318d..fe2fb17102 100755
--- a/t/t2107-update-index-basic.sh
+++ b/t/t2107-update-index-basic.sh
@@ -48,4 +48,17 @@ test_expect_success '--cacheinfo does not accept gitlink null sha1' '
 	test_cmp expect actual
 '
 
+test_expect_success '--cacheinfo mode,sha1,path (new syntax)' '
+	echo content >file &&
+	git hash-object -w --stdin <file >expect &&
+
+	git update-index --add --cacheinfo 100644 "$(cat expect)" file &&
+	git rev-parse :file >actual &&
+	test_cmp expect actual &&
+
+	git update-index --add --cacheinfo "100644,$(cat expect),elif" &&
+	git rev-parse :elif >actual &&
+	test_cmp expect actual
+'
+
 test_done