Re: e and pi

[Chong Yidong <cyd@stupidchicken.com>]

Stefan Monnier <monnier@IRO.UMontreal.CA> writes:

> in the current lexbind branch (where e is defined as a global/dynamic
> variable), the below code would not do the same:
>
>   (defun make-inc (e)
>     (lambda (f) (+ e f)))
>
> because "e" happens to be a predefined global variable with
> dynamic-scoping semantics.

This doesn't sound right---it means that people will have to make sure
their function args do not coincide with any defvar, defined anywhere.
It won't just be "e" and "pi" causing problems.  Someone might write

  (defun froob (argv)
     (lambda (f) (cons f argv)))

and have that fail, because "argv" is a defvar defined in startup.el.