Eli Zaretskii <eliz@gnu.org> schrieb am Sa., 23. Dez. 2017 um 16:00 Uhr:

> > Date: Sat, 23 Dec 2017 16:52:16 +0200
> > From: Eli Zaretskii <eliz@gnu.org>
> > Cc: phst@google.com, emacs-devel@gnu.org
> >
> > Btw, doesn't find_charsets_in_text do the same job cleaner and
> > quicker?  AFAIU, all you need is make sure there are no characters
> > from the 2 eight-bit-* charsets in the text, or did I miss something?
>
> Ah, I see you test the encoded string, so find_charsets_in_text won't
> do.  But maybe find_charsets_in_text could be called on the original
> strings before encoding them, which would be even better?
>

I'd want to avoid that because it makes the coding check mandatory. With my
patch, the additional check only happens in the failure case, when we
signal an error.
Also find_charsets_in_text seems really hard to use and seems overblown for
a simple "is UTF-8" check.