Re: Encoding multibyte strings

[B. T. Raven]

On 4/8/2016 02:28, Eli Zaretskii wrote:
> > From: Eric Abrahamsen <eric@ericabrahamsen.net>
> > Date: Fri, 08 Apr 2016 15:09:55 +0800
> >
> > I'm trying to get from this:
> >
> > 陈冬梅
> >
> > to this:
> >
> > CHARSET=UTF-8;ENCODING=QUOTED-PRINTABLE:=E9=99=88=E5=86=AC=E6=A2=85
> >
> > Assuming that the original characters were in utf-8, of course. So that
> > 陈 is =E9=99=88, and so on.
> >
> > I got this string by looking at a Vcard export from the Contacts app on
> > my Android phone. I'm trying to take an Emacs buffer and turn it into a
> > *.vcf card file to import into the same app -- basically I'm trying to
> > reverse-engineer the VCard encoding format so I can create a file to
> > feed to my phone.
> >
> > I'm 99.9% sure that Emacs already comes with functions that will produce
> > my escaped coded string, but after many adventures with C-h f (during
> > which I learned quite a few unrelated tricks) I haven't found it. Can
> > someone enlighten me as to what the simplest way to do this is?
>
> Not sure what exactly are you looking for.  A wild guess is that
>
>    (encode-coding-string 'utf-8 STRING)
>
> and
>
>    (quoted-printable-encode-string STRING)
>
> will do the job, IIUC.

(haxe-string-to-x-string "陈冬梅")

evaluated to this:

"\\xe9\\x99\\x88\\xe5\\x86\\xac\\xe6\\xa2\\x85"

that function and a discussion of the problem are here:


http://stackoverflow.com/questions/11085222/translate-unicode-utf-8-codepoint-to-bytes

hth,

Ed