From mboxrd@z Thu Jan  1 00:00:00 1970
From: Nicolas Goaziou <mail@nicolasgoaziou.fr>
Subject: Re: Full-width characters break column display
Date: Thu, 01 Nov 2018 22:25:36 +0100
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To: Leo Gaspard <leo@gaspard.ninja>
Cc: Leo Gaspard <orgmode@leo.gaspard.io>, emacs-orgmode@gnu.org

Leo Gaspard <leo@gaspard.ninja> writes:

> Nicolas Goaziou <mail@nicolasgoaziou.fr> writes:
>>> Small issue I've been having with org-mode: full-width characters
>>> (eg. =E4=BD=95=E3=81=8B) appear to be breaking column display.
>>
>> Org tables assume a fixed-width font.  You need to use one, if such
>> thing exists for these characters.
>
> Well, it is fixed-width, but twice the width of spaces and vertical
> characters.
>
> Using it with regular English =EF=BD=8D=EF=BD=81=EF=BD=8B=EF=BD=85=EF=BD=
=93=E3=80=80=EF=BD=89=EF=BD=94=E3=80=80=EF=BD=8C=EF=BD=8F=EF=BD=8F=EF=BD=8B=
=E3=80=80=EF=BD=8C=EF=BD=89=EF=BD=8B=EF=BD=85=E3=80=80=EF=BD=94=EF=BD=88
> =EF=BD=89=EF=BD=93, which I guess you'll grant me is not really usable :)
>
> I wonder if it'd be possible to support full-width chars for CJK
> script?

The problem is that=20

  (string-width "=E4=BD=95=E3=81=8B")

equals

  (string-width "    ")

i.e, 4 characters, but both strings do not have the same length
visually.

As long as the two sexps above disagree, it seems difficult to support
this.