Subject: bug#41278: 27.0.91; incorrect U+203E OVERLINE alignment with Fantasque Sans Mono

From: Vincent Lefevre <[email-masked]>
Date: Fri, 15 May 2020 12:28:48 +0200

On 2020-05-15 11:57:16 +0200, Robert Pluim wrote:
> >>>>> On Thu, 14 May 2020 21:41:13 +0200, Vincent Lefevre <[email-masked]> said:
> 
>     Vincent> On the following text file:
> 
>     Vincent> underline
>     Vincent> ‾‾‾‾‾‾‾‾‾
> 
>     Vincent> (where ‾ is U+203E OVERLINE), the command
> 
>     Vincent>   emacs -Q -fn "Fantasque Sans Mono" text
> 
>     Vincent> shows an incorrect alignment (see attached screenshot).
> 
> Two questions:
> 
>     - is Fantasque being used for the U+203E (check with C-u C-x =)

No:

    xfthb:-PfEd-Linux Libertine Display O-normal-normal-normal-*-22-*-*-*-*-0-iso10646-1 (#x619)

So I suppose that XTerm does a better replacement.

>     - does this same problem happen if you build emacs 27 with Cairo
>     enabled? (you might need to install some cairo development
>     packages)

Same problem.

-- 
Vincent Lefèvre <[email-masked]> - Web: <https://www.vinc17.net/>
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