add(tooling) .luacheckrc

.luacheckrc

@@ -0,0 +1,33 @@
+-- Only allow symbols available in all Lua versions
+std = "min"
+
+files[".luacheckrc"].ignore = { "111", "112", "131" }
+
+-- Global objects defined by the C code
+read_globals = {
+    "awesome",
+    "button",
+    "dbus",
+    "drawable",
+    "drawin",
+    "key",
+    "keygrabber",
+    "mousegrabber",
+    "selection",
+    "tag",
+    "window",
+    "table.unpack",
+    "math.atan2",
+}
+
+globals = {
+    "screen",
+    "mouse",
+    "root",
+    "client",
+}
+
+-- Enable cache (uses .luacheckcache relative to this rc file).
+cache = true
+
+-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80