Is it possible to have an alias for the function name in Lisp?

Question

...just like packages do.

I use Emacs (maybe, it can offer some kind of solution).

For example (defun the-very-very-long-but-good-name () ...) is no

Answer 1

You want defalias. (defalias 'newname 'oldname) will preserve documentation and even show "newname is an alias for `oldname'" when its documentation is requested.