bug#25886: 25.1; freeze by C-g while character display

[Eli Zaretskii]

> From: ynyaaa@gmail.com
> Date: Mon, 27 Feb 2017 12:19:21 +0900
> 
> 
> Emacs may take a long time to display some sort of characters.
> In my environment, 567 is one of such characters.
> Evaluating (insert 567), I see a framed box containing 0237
> after one second or two.
> If I type C-g before the box is displayed, emacs freezes.
> 
> If 567 is not such a character, please try the form below.
> (dotimes (i 1000)
>   (insert (format "%d\t%c\n" i i))
>   (redisplay))

I think this is bug#25279, fixed recently on the master branch.

Thanks.