Re: Performance degradation from long lines

[Clément Pit-Claudel]

On 2019-07-18 10:48, Stefan Monnier wrote:
> As for such settings in people's .emacs, my educated guess is that they
> date back to Emacs-23's introduction to work around problems in specific
> modes that have since solved those problems (typically by setting
> bidi-paragraph-direction).

It's also suggested in the top-voted answer on how to make Emacs faster with 
long lines on emacs.stackexchange 
(https://emacs.stackexchange.com/questions/598/how-do-i-prevent-extremely-long-lines-making-emacs-slow),
 so I'd expect many people to have it in their config for that reason.