Re: Very bad/slow redraw with vertical split.

[Robin Lee Powell]

Yes, most does the right thing.  Thanks!

"view" (which is just read-only vim) does as well.

-Robin

On Fri, Oct 24, 2008 at 03:26:14PM -0400, Tom Scogland wrote:
> Actually I use vim for that these days.  I have an alias that
> starts vim and runs ":Man <arguments>"  whenever I run man.  That
> means it works nice and fast, and I get nicely highlighted man
> pages.  As to a less stupid dedicated pager, there's always most,
> which also does syntax highlighting though the key commands don't
> quite work for me.  It might do the redraw a little better, but
> I'm not sure.
> 
> On Fri, Oct 24, 2008 at 2:34 PM, Robin Lee Powell <
> address@hidden> wrote:
> 
> > On Fri, Oct 24, 2008 at 02:26:30PM +0100, Thomas Adam wrote:
> > > Hello --
> > >
> > > 2008/10/24 Robin Lee Powell <address@hidden>:
> > > >
> > > > I'm playing around with vertical split.  I'm using Screen
> > > > version 4.00.03jw4 (FAU) 2-May-06 on Debian.
> > > >
> > > > When I have vertical split on, less is slow.  *Really* slow.  So
> > > > is more.  vim is OK.  When I say "slow", I mean that when I say
> > > > "less file", it takes ~20 seconds for it to put the first
> > > > screenful of data up.
> > > >
> > > > Any idea what's up?
> > >
> > > It's a known caveat of vertical splits in screen.  Screen has to
> > > continually redraw the region and so that slows things down.
> >
> > I had a giant post written about how vertical splits in emacs and
> > vim are quite fast, and how running vim under a vertical split in
> > screen is also snappy, as opposed to running less, so there *must*
> > be a problem somewhere...
> >
> > And then I realized that when you page down in vim, it redraws its
> > display area once.  When you page down in less, it redraws line by
> > line.
> >
> > -_-
> >
> > Holding down j in vim to make it redraw line by line makes
> > everything just as slow as less.
> >
> > So.
> >
> > Can anyone reccomend a less (ha!) stupid pager?  more does the same
> > thing, and I can't view man pages like this.
> >
> > less -c mostly does the trick...  Except that the initial screen
> > clear to put the cursor at the top line is done the slow way, and
> > hence takes ~30 seconds.  "clear ; less -c [file]" works, but I'd
> > love a better suggestion.
> >
> > -Robin
> >
> > --
> > They say:  "The first AIs will be built by the military as weapons."
> > And I'm thinking:  "Does it even occur to you to try for something
> > other than the default outcome?" -- http://shorl.com/tydruhedufogre
> > http://www.digitalkingdom.org/~rlpowell/ *** http://www.lojban.org/
> >
> >
> > _______________________________________________
> > screen-users mailing list
> > address@hidden
> > http://lists.gnu.org/mailman/listinfo/screen-users
> >
> 
> 
> 
> -- 
> -N
> AKA:Tom Scogland
> I am enough of an artist to draw freely upon my imagination. Imagination is
> more important than knowledge. Knowledge is limited. Imagination encircles
> the world.
> -Albert Einstein

-- 
They say:  "The first AIs will be built by the military as weapons."
And I'm thinking:  "Does it even occur to you to try for something
other than the default outcome?" -- http://shorl.com/tydruhedufogre
http://www.digitalkingdom.org/~rlpowell/ *** http://www.lojban.org/