bug#61514: 30.0.50; sadistically long xml line hangs emacs

[Gregory Heytings]

> > Nobody is saying that there is no bug here.  I was only pointing out 
> > that the bug is not "in Emacs", it is in the fontification routines of 
> > a specific mode.  If you turn fontification off, you will see that 
> > Emacs 30 behaves much better than Emacs 28.
>
> And when that mode is part of Emacs, the bug is in Emacs.

That remark misses the context and the point.