Re: Optimising Elisp code

[Stefan Monnier]

> What you're describing is called inline expansion.
> AFAIK, the Elisp compiler doesn't do this automatically.

Indeed, it doesn't do it automatically because it doesn't know how to
(automatically) undo it, and it has visible effects w.r.t advice,
debug-on-entry, etc...

> You can define bar as a macro -- those HAVE to be expanded at compile 
> time, since that's how they work.
>
> You can also define an inline function using defsubst. From the Elisp 
> manual:

And also with cl-defsubst, with (declare (compiler-macro ...))
and more recently with define-inline.


        Stefan