Re: identity

[Marius Vollmer]

Keisuke Nishida <address@hidden> writes:

> At 13 Apr 2001 20:10:22 +0200,
> Marius Vollmer wrote:
> > 
> > Should we remove `id' or not?
> 
> What about this?
> 
> (define (identity x) x)
> 
> (define (id x)
>   (display ";;; `id' is deprecated.  Use `identity' instead.\n")
>   x)

Isn't that a bit much?  You'll get the warning on every use of `id',
which might be an enourmous number of times.  In any case, the message
should go to (current-error-port).

Maybe this is a good opportunity to intriduce explicit support for
deprecating into the module system?  We could for example have a way
to emit a warning once when a deprecated binding is looked up.