L1500 - Unused Include

warning

This code is not emitted any longer. It is superseded by W0020

Error

//- /include/foo.hrl
  -define(FOO,3).

//- /src/foo.erl
  -module(foo).
  -include("foo.hrl").
%%^^^^^^^^^^^^^^^^^^^^ 💡 warning: Unused file: foo.hrl

Explanation

See W0020 for details.