bug#53173: 28.0.91; preedit style for X Input Method is not supported?

[Eli Zaretskii]

> Cc: 53173-done@debbugs.gnu.org
> Date: Tue, 11 Jan 2022 16:12:01 +0800
> From:  Po Lu via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
> 
> Hirofumi Kosaka <kosaka@rworks.jp> writes:
> 
> > Hello all,
> >
> > The X Server that I use supports 'over-the-spot' for XIM (X Input
> > Method) preedit style, but the pretest version forces root window
> > style, that is the most basic style but not good enough for us CJK
> > users.
> 
> I completely agree.  Someone deleted the code for other styles to fix a
> bug, instead of fixing the real cause of that problem, which I did on
> master.
> 
> > Emacs 27.2 (or earlier) works fine for it, but the pretest version
> > seems to ignore available preedit styles (X server provides) or so.
> 
> It's too late to change this inside the pretests, but it should work on
> master.

Which commit fixed that on master?