Re: [emacs-humanities] Form-feed as literary-style scene breaks

[Manuel Uberti]

On 14/01/21 09:35, Paul W. Rankin via Emacs-humanities wrote:
> If you've poked around Elisp much you might see a bunch of form-feed 
> characters:
> ^L. When you send these to a printer they will actually trigger a page break,
> which is cool, but they still look ugly.
> 
> There are a couple of minor modes that replace the ^L with a horizontal line,
> but I wanted something a tiny bit fancier, akin to a literary-style scene 
> break,
> so I put this into my init.el...
> 
>     (aset standard-display-table ?\^L
>           (vconcat (make-string 15 ?\s) (make-string 35 ?─)))
> 

Hi Paul,

thank you for the tip.

However, in Emacs 28 from emacs -Q evaluating that code results in:

Debugger entered--Lisp error: (wrong-type-argument arrayp nil)
  aset(nil 12 [32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 9472 9472 9472 9472
9472 9472 9472 9472 9472 9472 9472 9472 9472 9472 9472 9472 9472 9472 9472 9472
9472 9472 9472 9472 9472 9472 9472 9472 9472 9472 9472 9472 9472 9472 9472])
  (progn (aset standard-display-table 12 (vconcat (make-string 15 32)
(make-string 35 9472))))
  eval((progn (aset standard-display-table 12 (vconcat (make-string 15 32)
(make-string 35 9472)))) t)
  elisp--eval-last-sexp(nil)
  eval-last-sexp(nil)
  funcall-interactively(eval-last-sexp nil)
  call-interactively(eval-last-sexp nil nil)
  command-execute(eval-last-sexp)


All the best

-- 
Manuel Uberti
www.manueluberti.eu