Raise before expansion when outside of a function and the function/arity does not exist

[josevalim]

For example, the following code:

module Foo do
  @foo "bar"
end

Should raise with unknown function or macro module/2.

[sasa1977]

I was thinking some more about it and just wanted to mention that this seems like a very special case.

For example, if we have

my_macro do
  module Foo do @foo "bar"
end

Then you can't tell for sure if module is available or not until you expand my_macro. Just wanted to mention, I don't know if you already thought of this case.

[josevalim]

Yes, exactly. But there is no reason to expand module/2 if my_macro/1 is not available. :)

[josevalim]

@sasa1977 now I understood your comment. We are not going special case module, it is a mechanism available for all calls that cannot expand to a local call (basically all calls outside a function/macro).