Re: Emacs script options

[Jens Schmidt <jschmidt4gnu@vodafonemail.de>]

On 2023-11-20  02:19, Greg Minshall wrote:

> no way, NO way near hack'y enough.  :)

I couldn't stand the fact that my hack was taken already plus
that it is flawed, so I set off to extend it with a work-around
for the lexical-binding issue.

While there are surely other methods to achieve what below code
does, supposedly also more stable ones, I wanted to go for
brevity to keep the non-script overhead small:

------------------------- escript -------------------------
#!/bin/sh
: ; exec emacs --script "$0" -- "$@" #; -*- lexical-binding: t -*-

;; Work around `eval-buffer' not recognizing the lexical-binding
;; stanza when the comment containing it does not start at first
;; column (bug#67321).
(unless (ignore-errors (funcall (let ((v t)) (lambda () v))))
  (with-current-buffer (car eval-buffer-list)
    (goto-char (point-min)) (search-forward "; -*-")
    (delete-region (point-min) (match-beginning 0))
    (eval-buffer)))

;; Script payload.
(message "%S:%S" lexical-binding command-line-args-left)

;; Explicitly exit Emacs to not return from the second-level
;; `eval-buffer'.
(kill-emacs 0)

;;; Local Variables:
;;; mode: emacs-lisp
;;; End:
------------------------- escript -------------------------

(Thanks to Sebastian for opening the bug, BTW.  When looking at
the previous, now merged bug, it seems that this won't be
something easy to get through.)