Tuesday, October 31, 2023

Re: Regular expression tokens to identify *screen* lines?

On Mo, 30 Okt 2023, Tim Chase wrote:

> I was playing around with tokens like
>
> :help /\%l
>
> and was curious if there was a way to identify *screen* lines rather
> than *file* lines. So imagining something like "\%5H" or "\%3L"
> would match the fifth-from-top line or the third-from-bottom line
> of the screen.

I am pretty sure we do not have regex atoms for screen lines.

> The initial idea was some sort of focused-writing where the top/bottom
> lines were dark-gray, getting progressively brighter in white-ness
> moving toward the center of the screen where the cursor-line (done
> with underline) would be kept in the middle with a high 'scrolloff'
> value. Maybe using syntax highlighting or :match-style invocations.
>
> It was mostly an boondoggle idea, so please nobody spend vast amounts
> of time on this silliness, but if there something obvious I've
> missed for "fade out text around the cursor" sort of functionality.
>
> Thanks for any thoughts, pointers, ideas though. :-)

Perhaps with some reasonable nice looking highlighting group, you can
use :set cursorlineopt=screenline. Or perhaps one can script something
by throwing in marks to delimit the region and then match it using the
\%'m atom (or possibly you don't even need the marks you can just try to
get the virtcol for the region and then use the \%v atom instead).

Thanks,
Christian
--
Drop in any mailbox.

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