Re: master 77c3d41adc: Prevent text decorations from overwriting surrounding areas on X

[Eli Zaretskii]

> From: Po Lu <luangruo@yahoo.com>
> Cc: emacs-devel@gnu.org
> Date: Wed, 12 Jan 2022 09:56:15 +0800
> 
> The glyphs with over-wide decorations (that extend over the fringes)
> seem to be stretch glyphs, and only occur inside text that has been
> extended to the end of a line.

That means we compute the width of those stretch glyphs incorrectly
somewhere.

And I still wonder how come I don't see the problem on MS-Windows.