Re: emacs master + org Wrong type argument: number-or-marker-p

[Eli Zaretskii]

> From: Po Lu <luangruo@yahoo.com>
> Cc: Eli Zaretskii <eliz@gnu.org>,  gregory@heytings.org,  mattiase@acm.org,
>   philipk@posteo.net,  silent2600@gmail.com,  emacs-devel@gnu.org
> Date: Wed, 03 Aug 2022 09:21:00 +0800
> 
> I agree with Alan.
> 
> Is there really a slowdown associated with allowing code to widen
> outside the bounds specified by redisplay long-line "optimizations"?  Or
> are we speculating about a hypothetical problem that doesn't exist
> again?

It isn't a hypothetical problem.  You can try the examples posted here
yourself, after disabling the feature.  Try it once with and then
without font-lock, and draw your own conclusions.