luacheck

builtin/common/settings/components.lua

@@ -453,12 +453,16 @@ function make.key(setting)
 			self.resettable = core.settings:has(setting.name)
 			local btn_bind_width = math.max(2.5, avail_w/2)
 			local value = core.settings:get(setting.name)
-			local fs = "label[0,0.4;" .. get_label(setting) .. "]" ..
-					("button_key[%f,0;%f,0.8;%s;%s]"):format(btn_bind_width, btn_bind_width-0.8, btn_bind, core.formspec_escape(value)) ..
-					("image_button[%f,0;0.8,0.8;%s;%s;]"):format(avail_w - 0.8,
-							core.formspec_escape(defaulttexturedir .. "clear.png"),
-							btn_clear)
-			return fs, 0.8
+			local fs = {
+				("label[0,0.4;%s]"):format(get_label(setting)),
+				("button_key[%f,0;%f,0.8;%s;%s]"):format(
+						btn_bind_width, btn_bind_width-0.8,
+						btn_bind, core.formspec_escape(value)),
+				("image_button[%f,0;0.8,0.8;%s;%s;]"):format(avail_w - 0.8,
+						core.formspec_escape(defaulttexturedir .. "clear.png"),
+						btn_clear),
+			}
+			return table.concat(fs), 0.8
 		end,
 
 		on_submit = function(self, fields)