===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/cmd-list-keys.c,v
retrieving revision 1.51
retrieving revision 1.52
diff -u -r1.51 -r1.52
--- src/usr.bin/tmux/cmd-list-keys.c	2020/02/15 15:08:08	1.51
+++ src/usr.bin/tmux/cmd-list-keys.c	2020/04/05 08:40:31	1.52
@@ -1,4 +1,4 @@
-/* $OpenBSD: cmd-list-keys.c,v 1.51 2020/02/15 15:08:08 nicm Exp $ */
+/* $OpenBSD: cmd-list-keys.c,v 1.52 2020/04/05 08:40:31 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -47,8 +47,8 @@
 	.name = "list-commands",
 	.alias = "lscm",
 
-	.args = { "F:", 0, 0 },
-	.usage = "[-F format]",
+	.args = { "F:", 0, 1 },
+	.usage = "[-F format] [command]",
 
 	.flags = CMD_STARTSERVER|CMD_AFTERHOOK,
 	.exec = cmd_list_keys_exec
@@ -317,9 +317,12 @@
 	const struct cmd_entry	**entryp;
 	const struct cmd_entry	 *entry;
 	struct format_tree	 *ft;
-	const char		 *template, *s;
+	const char		 *template, *s, *command = NULL;
 	char			 *line;
 
+	if (args->argc != 0)
+		command = args->argv[0];
+
 	if ((template = args_get(args, 'F')) == NULL) {
 		template = "#{command_list_name}"
 		    "#{?command_list_alias, (#{command_list_alias}),} "
@@ -331,6 +334,11 @@
 
 	for (entryp = cmd_table; *entryp != NULL; entryp++) {
 		entry = *entryp;
+		if (command != NULL &&
+		    (strcmp(entry->name, command) != 0 &&
+		    (entry->alias == NULL ||
+		    strcmp(entry->alias, command) != 0)))
+		    continue;
 
 		format_add(ft, "command_list_name", "%s", entry->name);
 		if (entry->alias != NULL)