is there a way in emacs to detect all the unused functions?

unused elisp functions?

probably not based on this: (funcall (intern "plusp") 4)

yes unused functions in a file

that’s interesting question. I wonder if there’s a “static code analyzer” tool or something for elisp

@richiardiandrea xref-find-references will show you all the places where a function is explicitly called, and will warn you if none are found; you could probably script that somehow to do what you want?

@tanzoniteblack oh interesting did not know that, yeah that sounds like easy to achieve