Re: Scrolling commands and skipping redisplay, was: Re: emacs rendering comparisson between emacs23 and emacs26.3

[Stefan Monnier]

>> Normally, input_was_pending should be the same during scroll than during
>> the subsequent redisplay, so there should not be any loss of precision, no.
> No, the same loss of precision as associated with f-b-i-s. Since font-lock
> won't occur while scrolling, whatever different-sized fonts, etc, that could
> be applied, won't be. So the scrolling positions will be imprecise.

It is precise in the sense that it will skip exactly the amount
corresponding to what is displayed.  Because jit-lock is skipped, what
is displayed is different, but the scrolling itself is "precise".


        Stefan