Macros guide: Wrong arity of alias!/1 #1190
Description
Elixir provides similar mechanisms for imports and aliases too. This guarantees that a macro will behave as specified by its source module rather than conflicting with the target module where the macro is expanded. Hygiene can be bypassed under specific situations by using macros like
var!/2andalias!/2, although one must be careful when using those as they directly change the user environment.
alias!/2 might be alias!/1.