util.set: Add luacheck annotation for methods not referencing 'self'

diff --git a/util/set.lua b/util/set.lua
index c160d28e79adf6123220f4b84fe7f99e0ca6de35..0a263440faf94d88fac7fbc48ba3fcda6b78c13e 100644 (file)
--- a/util/set.lua
+++ b/util/set.lua
@@ -66,6 +66,9 @@ function new(list)
        local items = setmetatable({}, items_mt);
        local set = { _items = items };
 
+       -- We access the set through an upvalue in these methods, so ignore 'self' being unused
+       --luacheck: ignore 212/self
+
        function set:add(item)
                items[item] = true;
        end