Re: new coding system (was: Re: prettify symbols question)

[Eli Zaretskii]

> From: "Alfred M. Szmidt" <ams@gnu.org>
> Cc: emacs-devel@gnu.org
> Date: Fri, 13 Nov 2020 09:47:16 -0500
> 
> So I've created a LISPM charmap, and a LISPM charset map based on
> that.  Then calling define-charset and define-coding-system, if I now
> try to open a Lisp machine file in the lispm coding it seems to be
> unable to handle the various characters; e.g., #o210.
> 
>   These default coding systems were tried to encode text
>   in the buffer ‘lispm-char-test.text’:
>     (lispm-unix (1 . 0) (59 . 1) (117 . 2) (175 . 3) (233 . 4) (291 . 5)
>     (349 . 6) (407 . 7) (465 . 4194184) (523 . 4194185) (581 . 4194186))
>   However, each of them encountered characters it couldn’t encode:
>     ....

What does "M-x describe-character-set RET lispm RET" show?

And what was shown where you show the ellipsis?