bug#21695: 25.0.50; Change most occurrences of `setq' in Emacs manual to `customize-set-variable'? Really?

[Eli Zaretskii]

> Date: Sun, 12 Sep 2021 13:11:52 +0300
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: larsi@gnus.org, hmelman@gmail.com, 21695@debbugs.gnu.org, rms@gnu.org
> 
> The difference is that while Emacs is being built, especially
> bootstrapped, calls to Lisp code that isn't preloaded by autoload.el
> could fail.  So such calls need to be careful not to call a symbol if
> the call could fail, or at least use internal_condition_case*
> functions to protect themselves against failure.

Basically, you should use safe_call and its ilk.