Dear Eric,  

I've checked the width of characters you mentioned.
Please find attached images.

In this case, the ascii font is Monaco:12pt.
And Japanese font is "Migu 2M":12pt with 1.2 scaling factor.
The "Migu 2M" font is monospace.

I've got unexpected results, the length of "蛙" or "《" is 2, but
"○" is 1. I don't know the reason. Is the "○" handled as a symbol?

Best regards,
Takaaki Ishikawa

--
Takaaki ISHIKAWA <takaxp@ieee.org>
  GITI, Waseda University
    ( ' -')b http://about.me/takaxp


On 2013年2月13日Wednesday at 0:55, Bastien wrote:

> Hi Eric,
>  
> Eric Abrahamsen <eric@ericabrahamsen.net (mailto:eric@ericabrahamsen.net)> writes:
>  
> > 《蛙》
> > 123456
> >  
> > Doesn't that line up for you? Those bracket characters come with their
> > own "whitespace", maybe this is clearer:
> >  
> > 正能量
> > 123456
>  
>  
>  
> The chinese line and the 123456 one are not of the same
> visual/geometrical width for me, even if they both count as 6
> characters.
>  
> See the screenshots, where you can see it quickly.
>  
> > One Chinese character should definitely take up two screen columns.
>  
> Not for me... perhaps that's because I don't have a monospace font
> for chinese characters? Do you?
>  
> > I'd love to file a bug report but I honestly don't know where this comes
> > from. If it's not org-add-props or relatives, what emacs function is
> > responsible?
>  
>  
>  
> Unless you don't see the difference I observe here on my screen,  
> this may be a bug in Emacs internal display engine.
>  
>  
> --  
> Bastien
>  
>  
> Attachments:  
> - emacs-string-width1.jpg
>  
> - emacs-string-width2.jpg
>