[racket] impersonators/chaperones for lists

On Sat, Oct 22, 2011 at 5:50 PM, Shriram Krishnamurthi <sk at cs.brown.edu> wrote:
> Thanks to you and Sam -- I had wondered if the run-time system wasn't
> partly driving this, and certainly chaperones on immutable data don't
> make as much sense.

They do make sense, and turn out to be important for things like
immutable but opaque structures.

> But I don't see them on mutable lists either....

This is just a missing feature, which I hope we'll correct at some point soon.
-- 
sam th
samth at ccs.neu.edu