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From: Liang Wang <netcasper@gmail.com>
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Subject: Re: A patch for enforcing double-width CJK character display
Date: Wed, 30 Apr 2014 10:08:00 -0700
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To: Hui Liu <liuhui.zy@gmail.com>
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On Tue, Apr 29, 2014 at 7:00 PM, Hui Liu <liuhui.zy@gmail.com> wrote:
>> But there is a bug on displaying Chinese double dash.  When I switch
>> to other buffer and switch back, it looks wrong.  I attached both
>> screenshots and I draw a red line under Chinese double dash in the
>> correct one.
>
> I don't think it is a bug of the patch. The font you used looks like
> WenQuanYi Micro Hei, so I test a dozen other Chinese fonts. ONLY
> WenQuanYi fonts have this problem.
>

Yes, I use WenQuanYi Micro Hei Mono.

> The reason is the some characters (e.g. Chinese punctuations and Greek
> letters) in WenQuanYi fonts are halfwidth. I know little about fonts,
> so I doubt if it is a bug of WenQuanYi because these characters in
> other Chinese fonts are all fullwidth.
>
> Since these characters are included in the symbol charset, You can
> simply leave this charset to the default English font. Or use any
> other Chinese fonts except WenQuanYi.

Thanks, I choose another font for symbol.  It works now!