Re: Performance degradation from long lines

[Eli Zaretskii]

> Date: Fri, 26 Oct 2018 06:40:25 +0000
> From: mithraeum <address@hidden>
> 
> I was just starting to do an exercise on a programming practice
> website, and happened to paste some example data from the site
> in to my Emacs buffer, without thinking anything of it.
> 
> It happened to be over 2000 characters on one line and Emacs froze
> for a while.  Fortunately, it wasn't much more, or the freeze
> would have been even longer.

In what major mode did that happen?  I don't think I ever saw any
problems with 2000-character lines, it begins happening for me only
when lines are much longer, like tens of thousands of characters.

Also, what happens if you use switch to Fundamental mode in that case?