Merge pull request #3229 from mwenzkowski/fix-fullscreen-cmd

Fix fullscreen command and improve documentation

sway/commands/fullscreen.c

@@ -13,14 +13,14 @@ struct cmd_results *cmd_fullscreen(int argc, char **argv) {
 		return error;
 	}
 	if (!root->outputs->length) {
-		return cmd_results_new(CMD_INVALID, "fullscreen",
+		return cmd_results_new(CMD_FAILURE, "fullscreen",
 				"Can't run this command while there's no outputs connected.");
 	}
 	struct sway_node *node = config->handler_context.node;
 	struct sway_container *container = config->handler_context.container;
 	struct sway_workspace *workspace = config->handler_context.workspace;
 	if (node->type == N_WORKSPACE && workspace->tiling->length == 0) {
-		return cmd_results_new(CMD_INVALID, "fullscreen",
+		return cmd_results_new(CMD_FAILURE, "fullscreen",
 				"Can't fullscreen an empty workspace");
 	}
 	if (node->type == N_WORKSPACE) {

sway/sway.5.scd

@@ -130,8 +130,9 @@ They are expected to be used with *bindsym* or at runtime through *swaymsg*(1).
 *focus* mode\_toggle
 	Moves focus between the floating and tiled layers.
 
-*fullscreen*
+*fullscreen* [enable|disable|toggle]
-	Toggles fullscreen for the focused view.
+	Makes focused view fullscreen, non-fullscreen, or the opposite of what it
+	is now. If no argument is given, it does the same as _toggle_.
 
 *gaps* inner|outer|horizontal|vertical|top|right|bottom|left all|current
 set|plus|minus <amount>