[racket] syntax, differently

From: Matthias Felleisen (matthias at ccs.neu.edu)
Date: Sat Jul 31 11:48:23 EDT 2010

I clean up in drracket with 80-column wide  ;; --- lines. So there's support for the idea. 

On Jul 31, 2010, at 11:44 AM, Neil Van Dyke wrote:

> Robby Findler wrote at 07/31/2010 11:19 AM:
>> On Sat, Jul 31, 2010 at 10:00 AM, Matthias Felleisen
>> <matthias at ccs.neu.edu> wrote:
>>> 1. Could drracket limit the width of programs in the teaching language world to 80 columns?
>> This one seems doable (I'd probably make the text turn red when it passes the 80th column or somethign instead of rejecting keystrokes).
> If it's a visual indicator, I would very much like to have that available as an option in the non-teaching languages as well.  After working on a file in DrRacket for a while, I usually have to clean up the new overly-long lines in Emacs.
> Typical indicators are a gray line in the background after column 79 or 80, or a background color change there, like from white to light gray.
> I'm not sure about red.  Sometimes, rightward drift and a long identifier or literal means you have no practical choice but to violate the 79/80 border.  IMHO, border incursion is not quite as grave an offense as some of the other things for which we might want to use red.
> Regarding 79 or 80, 80 is now good for lots of people who previously had to use 79, though probably some people would like the option of 79.  (For a long time, it was 79 for lots of Unix people, first because some terminals would to an automatic newline of some kind on a write in column 80, and then because some tools liked to put adornments in column 80.  Some tools still like to.)  100 also seems a popular max width in some people's 'coding standards'.  MS Visual Studio, for example, lets you set this border to an arbitrary number, IIRC.
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