Re: Lisp reader syntax and bootstrap (was: Re: Disambiguate modeline character for UTF-8?)

[Eli Zaretskii]

> From: Ulrich Mueller <ulm@gentoo.org>
> Cc: Basil Contovounesios <contovob@tcd.ie>,  eggert@cs.ucla.edu,
>   emacs-devel@gnu.org
> Date: Sun, 09 Jul 2023 11:22:39 +0200
> 
> Are there any other features of lisp reader syntax where one must be
> careful? Maybe the Elisp Reference Manual should warn about this?

If you change a file FOO.el that is preloaded in loadup.el, you need
to make sure any function/macro/feature you use there is
defined/implemented either in C or by files loaded by loadup _before_
FOO.el.