Re: feature/fix-the-long-lines-display-bug c760d2ed16: * etc/PROBLEMS: Remove the entry which is no longer relevant.

[Gregory Heytings]

> > -*** Editing files with very long lines is slow.
> > -
> > -For example, simply moving through a file that contains hundreds of
> > -thousands of characters per line is slow, and consumes a lot of CPU.
> > -This is a known limitation of Emacs with no solution at this time.
>
> I wish this were true, but AFAIK the problem is still very much present. 
> We deal with it a bit better, but that doesn't mean the problem is gone. 
> In my tests, editing the end of a 1MB single-line JSON file is still 
> basically not an option, for example.

Please try the feature branch, and you'll see the problem is gone.