Re: Effect of lexical binding upon function paramaters

[Emanuel Berg <incal@dataswamp.org>]

Heime wrote:

> (defun ignition (featr actm)
>   "TODO."
>
>   (when (eq 'sweep featr) (setq featr 'icomplt))
>   (message "%S" featr))
>
> Calling the following sequence of commands
>
> (setq featr 'sweep)
> (ignition featr actm)
> (message "%S" featr)

What I can see from this test below, formal parameters
("arguments" in standard information interchange) are always
dynamic under dynabound, and always static under lexical
binding, this holds even in the presence of same-named global
variables (and it doesn't matter if they are lexical or
special).

Yeah, too complicated ...

But observe,

;;; -*- lexical-binding: t -*-
;;
;; this file:
;;   https://dataswamp.org/~incal/emacs-init/geh.el

(setq i 1)
(special-variable-p 'i) ; nil

(defvar j 2)
(special-variable-p 'j) ; t

(defun use-i-and-j ()
  (list i j) )

(defun vars-ij (i j)
  (setq i 123123)
  (setq j 666888)
  (use-i-and-j) )

(vars-ij 111111 222222) ; (1 2) lexical
                        ; (123123 666888) dynamic

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