doc/ls-remote: clarify pattern format

We document that you can specify "refs" to ls-remote, but we don't
explain any further than that they are "matched" as patterns. Since this
can be interpreted in a lot of ways, let's clarify that they are
tail-matched globs.

Likewise, let's use the word "patterns" to refer to them consistently,
rather than "refs" (both here and in the quick "-h" help), and mention
more explicitly that only one pattern needs to be matched (though there
is also an example already that shows this in action).

Signed-off-by: Jeff King <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: peff

Documentation/git-ls-remote.txt

@@ -11,7 +11,7 @@ SYNOPSIS
 [verse]
 'git ls-remote' [--heads] [--tags] [--refs] [--upload-pack=<exec>]
 	      [-q | --quiet] [--exit-code] [--get-url] [--sort=<key>]
-	      [--symref] [<repository> [<refs>...]]
+	      [--symref] [<repository> [<patterns>...]]
 
 DESCRIPTION
 -----------
@@ -85,11 +85,16 @@ OPTIONS
 	either a URL or the name of a remote (see the GIT URLS and
 	REMOTES sections of linkgit:git-fetch[1]).
 
-<refs>...::
+<patterns>...::
 	When unspecified, all references, after filtering done
-	with --heads and --tags, are shown.  When <refs>... are
-	specified, only references matching the given patterns
-	are displayed.
+	with --heads and --tags, are shown.  When <patterns>... are
+	specified, only references matching one or more of the given
+	patterns are displayed. Each pattern is interpreted as a glob
+	(see `glob` in linkgit:gitglossary[7]) which is matched against
+	the "tail" of a ref, starting either from the start of the ref
+	(so a full name like `refs/heads/foo` matches) or from a slash
+	separator (so `bar` matches `refs/heads/bar` but not
+	`refs/heads/foobar`).
 
 EXAMPLES
 --------

builtin/ls-remote.c

@@ -8,7 +8,7 @@
 static const char * const ls_remote_usage[] = {
 	N_("git ls-remote [--heads] [--tags] [--refs] [--upload-pack=<exec>]\n"
 	   "              [-q | --quiet] [--exit-code] [--get-url] [--sort=<key>]\n"
-	   "              [--symref] [<repository> [<refs>...]]"),
+	   "              [--symref] [<repository> [<patterns>...]]"),
 	NULL
 };