bug#52554: 28.0.90; mm-inline-media-tests customization breaks .emacs reading

[Eli Zaretskii]

> From: Andreas Schwab <schwab@linux-m68k.org>
> Cc: Robert Pluim <rpluim@gmail.com>,  52554@debbugs.gnu.org
> Date: Thu, 16 Dec 2021 17:13:53 +0100
> 
> On Dez 16 2021, Eli Zaretskii wrote:
> 
> >> $ HOME=/tmp emacs --debug-init
> >> 
> >> Debugger entered--Lisp error: (invalid-read-syntax "?" 1 0)
> >>   read(#<buffer  *load*>)
> >>   eval-buffer(#<buffer  *load*> nil "/tmp/.emacs" nil t)  ; Reading at 
> >> buffer position 573
> >>   load-with-code-conversion("/tmp/.emacs" "/tmp/.emacs" t t)
> >>   load("~/.emacs" noerror nomessage)
> >
> > Perhaps we should bind inhibit-null-byte-detection to a non-nil value
> > while loading the init file?
> 
> I'd rather think that custom-save-variable should bind
> print-escape-control-characters to t.

Maybe we should do both?