[r6rs-discuss] [Formal] Reduce over-specification as well as under-specification.

From: Abdulaziz Ghuloum <aghuloum>
Date: Wed Nov 15 23:28:20 2006

On Nov 13, 2006, at 10:36 AM, William D Clinger wrote:

> The main thing programmers need to know about phase
> levels is that they matter only for procedural macros
> and for libraries used by procedural macros. With the
> draft R6RS, the easiest way to cope with the phasing
> problems in portable code is to avoid all use of the
> (r6rs syntax-case) library. If that were to remain
> true in the R6RS, then the R6RS ought to say so.

The above statement is incorrect. You will have to deal with
phases whenever you write a macro whether it is written using
syntax-rules, identifier-syntax, or syntax-case. I explained
the detains in my formal comment regarding phases (it did not
make it to r6rs-discuss yet).

Aziz,,,
Received on Wed Nov 15 2006 - 23:18:28 UTC