[racket] disappeared-use syntax property

From: Robby Findler (robby at eecs.northwestern.edu)
Date: Wed May 29 07:52:15 EDT 2013

On Wed, May 29, 2013 at 6:48 AM, Sam Tobin-Hochstadt <samth at ccs.neu.edu>wrote:

> On Wed, May 29, 2013 at 2:43 AM, Eric Dobson <eric.n.dobson at gmail.com>
> wrote:
> > Is it 'wrong' to add a disappeared-use property onto a syntax object
> > even if the use wasn't actually disappeared? Its not very obvious what
> > semantics these syntax properties are supposed to have.
> I would take an operational view of the semantics: use the
> 'disappeared-use property if you want DrRacket to draw an arrow to the
> location of that syntax object.
And DrRacket already has to do a bunch of work to cope with strange results
(including duplicate identifiers) so it shouldn't mind if they both end up
being there.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.racket-lang.org/users/archive/attachments/20130529/5395567c/attachment.html>

Posted on the users mailing list.