From b54739c3284335a57b7cb566e017054bdb22b79e Mon Sep 17 00:00:00 2001
From: nicm <nicm@openbsd.org>
Date: Fri, 24 Apr 2015 21:38:18 +0000
Subject: [PATCH] Allow choice options (multiple states) to be toggled between
 states 0 and 1.

---
 usr.bin/tmux/cmd-set-option.c | 46 ++++++++++++++++++++++-------------
 1 file changed, 29 insertions(+), 17 deletions(-)

diff --git a/usr.bin/tmux/cmd-set-option.c b/usr.bin/tmux/cmd-set-option.c
index f18b5b78557..52f8ebcdc4b 100644
--- a/usr.bin/tmux/cmd-set-option.c
+++ b/usr.bin/tmux/cmd-set-option.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: cmd-set-option.c,v 1.72 2015/04/22 15:30:11 nicm Exp $ */
+/* $OpenBSD: cmd-set-option.c,v 1.73 2015/04/24 21:38:18 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -289,9 +289,15 @@ cmd_set_option_set(struct cmd *self, struct cmd_q *cmdq,
 {
 	struct options_entry	*o;
 
-	if (oe->type != OPTIONS_TABLE_FLAG && value == NULL) {
-		cmdq_error(cmdq, "empty value");
-		return (-1);
+	switch (oe->type) {
+	case OPTIONS_TABLE_FLAG:
+	case OPTIONS_TABLE_CHOICE:
+		break;
+	default:
+		if (value == NULL) {
+			cmdq_error(cmdq, "empty value");
+			return (-1);
+		}
 	}
 
 	o = NULL;
@@ -455,21 +461,27 @@ cmd_set_option_choice(unused struct cmd *self, struct cmd_q *cmdq,
 	const char	**choicep;
 	int		  n, choice = -1;
 
-	n = 0;
-	for (choicep = oe->choices; *choicep != NULL; choicep++) {
-		n++;
-		if (strncmp(*choicep, value, strlen(value)) != 0)
-			continue;
-
-		if (choice != -1) {
-			cmdq_error(cmdq, "ambiguous value: %s", value);
+	if (value == NULL) {
+		choice = options_get_number(oo, oe->name);
+		if (choice < 2)
+			choice = !choice;
+	} else {
+		n = 0;
+		for (choicep = oe->choices; *choicep != NULL; choicep++) {
+			n++;
+			if (strncmp(*choicep, value, strlen(value)) != 0)
+				continue;
+
+			if (choice != -1) {
+				cmdq_error(cmdq, "ambiguous value: %s", value);
+				return (NULL);
+			}
+			choice = n - 1;
+		}
+		if (choice == -1) {
+			cmdq_error(cmdq, "unknown value: %s", value);
 			return (NULL);
 		}
-		choice = n - 1;
-	}
-	if (choice == -1) {
-		cmdq_error(cmdq, "unknown value: %s", value);
-		return (NULL);
 	}
 
 	return (options_set_number(oo, oe->name, choice));
-- 
2.20.1