[racket] custom gap-size in slideshow

I've pushed that addition.

At Sun, 20 May 2012 21:05:05 +0200, Laurent wrote:
> On Sun, May 20, 2012 at 9:02 PM, Matthew Flatt <mflatt at cs.utah.edu> wrote:
> 
> > We could add a `#:gap-size' optional argument to `slide' and/or a
> > `current-gap-size' parameter. Does that sound right?
> >
> 
> current-gap-size would be perfect!
> 
> Thanks!
> Laurent
> 
> 
> >
> > At Sun, 20 May 2012 20:54:19 +0200, Laurent wrote:
> > > Hi,
> > >
> > > It seems that items and subitems in slideshow are separated by a factor
> > of
> > > gap-size.
> > > The default is good but often I need to resize the (sub)items, but the
> > > gap-size  (which should dynamically depend on the font-size) does not
> > > change, which creates big gaps between items.
> > > Is there a way to change that?
> > > (I mean, I could use vl-append myself, but then I lose the 'next / 'alts
> > > staging functionality).
> > >
> > > Laurent
> > > P.S.: Slideshow is awesome, truly.
> > > ____________________
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> > >   http://lists.racket-lang.org/users
> >