[asdf-devel] source file encoding

Hello.

How to specify source files encoding in ASD2? I.e. what value to pass to the :external-format argument of the compile-file? In the old ASDF I did it by

(let ((asdf:*compile-file-external-format* #+:clisp charset:cp1251 #+:sbcl :cp1251)) (asdf:operate 'asdf:load-op :mysystem))

But today the variable asdf:*compile-file-external-format* does not exist. Also, it of course would be better to specify the encoding in the .asd file (the system author knows the files encoding, and should care about this, but not the system user).

Could you advise me how to do it?

Best regards, - Anton