split toggle

Not sure if you will accept this, but i find it useful (I use it when
opening new terminal windows on a workspace

v2: add short hand command and docs

sway/commands.c

@@ -61,6 +61,7 @@ static sway_cmd cmd_scratchpad;
 static sway_cmd cmd_set;
 static sway_cmd cmd_split;
 static sway_cmd cmd_splith;
+static sway_cmd cmd_splitt;
 static sway_cmd cmd_splitv;
 static sway_cmd cmd_sticky;
 static sway_cmd cmd_workspace;
@@ -1340,6 +1341,13 @@ static struct cmd_results *cmd_split(int argc, char **argv) {
 		_do_split(argc - 1, argv + 1, L_VERT);
 	} else if (strcasecmp(argv[0], "h") == 0 || strcasecmp(argv[0], "horizontal") == 0) {
 		_do_split(argc - 1, argv + 1, L_HORIZ);
+	} else if (strcasecmp(argv[0], "t") == 0 || strcasecmp(argv[0], "toggle") == 0) {
+		swayc_t *focused = get_focused_container(&root_container);
+		if (focused->parent->layout == L_VERT) {
+			_do_split(argc - 1, argv + 1, L_HORIZ);
+		} else {
+			_do_split(argc - 1, argv + 1, L_VERT);
+		}
 	} else {
 		error = cmd_results_new(CMD_FAILURE, "split",
 			"Invalid split command (expected either horiziontal or vertical).");
@@ -1356,6 +1364,15 @@ static struct cmd_results *cmd_splith(int argc, char **argv) {
 	return _do_split(argc, argv, L_HORIZ);
 }
 
+static struct cmd_results *cmd_splitt(int argc, char **argv) {
+	swayc_t *focused = get_focused_container(&root_container);
+	if (focused->parent->layout == L_VERT) {
+		return _do_split(argc, argv, L_HORIZ);
+	} else {
+		return _do_split(argc, argv, L_VERT);
+	}
+}
+
 static struct cmd_results *cmd_sticky(int argc, char **argv) {
 	struct cmd_results *error = NULL;
 	if (config->reading) return cmd_results_new(CMD_FAILURE, "sticky", "Can't be used in config file.");
@@ -1567,6 +1584,7 @@ static struct cmd_handler handlers[] = {
 	{ "set", cmd_set },
 	{ "split", cmd_split },
 	{ "splith", cmd_splith },
+	{ "splitt", cmd_splitt },
 	{ "splitv", cmd_splitv },
 	{ "sticky", cmd_sticky },
 	{ "workspace", cmd_workspace },

sway/sway.5.txt

@@ -163,8 +163,9 @@ Commands
 	Creates a substitution for _value_ that can be used with $_name_ in other
 	commands.
 
-**split** <vertical|v|horizontal|h>::
-	Splits the current container, vertically or horizontally.
+**split** <vertical|v|horizontal|h|toggle|t>::
+	Splits the current container, vertically or horizontally. If toggled then the
+	current container is split opposite to the parent container.
 
 **splith**::
 	Equivalent to **split horizontal**.
@@ -172,6 +173,9 @@ Commands
 **splitv**::
 	Equivalent to **split vertical**.
 
+**splitt**::
+	Equivalent to **split toggle**.
+
 **sticky** <enable|disable|toggle>::
 	If enabled and the windows is floating it will always be present on the active
 	workspace on that output.