bug#24634: 25.1 on Windows (native and cygwin+w32): high CPU load with "wavy" characters

[Eli Zaretskii]

> From: Georges Ko <gko@gko.net>
> Date: Fri, 07 Oct 2016 12:59:14 +0800
> 
> When moving in lines with characters such as WAVY LOW LINE or WAVY LINE:
> 
>   - Emacs freezes for a while (noticeable) for a fraction of a second or
>     even longer,
> 
>   - The CPU load of Emacs increases as well (up to 25% on my Windows 7
>     machine) in the meantime.

Possibly related to bug#24565.

> Text sample below:
> 
> 
> ﹏
> 
> 
> 
> ⌇

What font(s) is/are used on your system to display these characters?