[racket] online check syntax error display tweak

At Fri, 9 Sep 2011 12:07:26 -0400,
Matthias Felleisen wrote:
> 
> On Sep 9, 2011, at 12:05 PM, Vincent St-Amour wrote:
> 
> > At Fri, 9 Sep 2011 10:58:23 -0500,
> > Robby Findler wrote:
> >> I thought about that, but I didn't want it to overlap the text and I
> >> didn't want it to slide everything over to make space.
> > 
> > What about horizontal lines before and after the relevant line,
> > running across the whole editor. Finding the relevant code becomes a
> > matter of following the lines. Grant Rettke's IntelliJ screenshot does
> > something similar, and I think it helps.
> 
> 
> The lines there look like method separators (possibly collapsible 
> method cells in the editor). 

Right. They're not quite what I suggest, but they help in a similar
fashion because they narrow down the lines that you need to look at.

Vincent