<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><br></div><div>I clean up in drracket with 80-column wide  ;; --- lines. So there's support for the idea. </div><div><br></div><br><div><div>On Jul 31, 2010, at 11:44 AM, Neil Van Dyke wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"> <div bgcolor="#ffffff" text="#000000"> Robby Findler wrote at 07/31/2010 11:19 AM: <blockquote cite="mid:AANLkTinqNMksArubu56rZx8kQwAeQTJ9ximRMczVR5C6@mail.gmail.com" type="cite"> <pre wrap="">On Sat, Jul 31, 2010 at 10:00 AM, Matthias Felleisen <a class="moz-txt-link-rfc2396E" href="mailto:matthias@ccs.neu.edu"><matthias@ccs.neu.edu></a> wrote: </pre> <blockquote type="cite"> <pre wrap="">1. Could drracket limit the width of programs in the teaching language world to 80 columns? </pre> </blockquote> <pre wrap=""> This one seems doable (I'd probably make the text turn red when it passes the 80th column or somethign instead of rejecting keystrokes). </pre> </blockquote> <br> 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.<br> <br> 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.<br> <br> 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.<br> <br> 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.<br> <br> <div class="moz-signature">-- <br> <a class="moz-txt-link-freetext" href="http://www.neilvandyke.org/">http://www.neilvandyke.org/</a> </div> </div> _________________________________________________<br>  For list-related administrative tasks:<br>  <a href="http://lists.racket-lang.org/listinfo/users">http://lists.racket-lang.org/listinfo/users</a></blockquote></div><br></body></html>