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.
>
> The context is that you dismissed a bug in nxml because it cannot be 
> reproduced in fundamental-mode.

That's not the context, no.  Nor did I dismiss a bug, read the first 
sentence above: "Nobody is saying that there is no bug here."  Nor did 
fundamental-mode play any role whatsoever in this discussion.