On 23-02-2023 19:04, Maxime Devos wrote:
> (*) Java actually allows "#!", but only in 'Shebang' files (see: 
> https://openjdk.org/jeps/330#Shebang_files).  It remains invalid to put 
> a '#!java' line in files with a class definition that is supposed to be 
> found by Java's class loaders and compiler (in Guile terms, the source 
> code of a module).

(Also, to my understanding, "#lang" is unconditionally invalid.)