[racket] phases

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On 01-03-12 21:31, Jon Rafkind wrote:
> Recent problems with phases have led me to investigate how they
> work in more detail. Here is a brief tutorial on what they are and
> how they work with macros. The guide and reference have something
> to say about phases but I don't think they go into enough detail.

Nice write-up Jon.

Towards the end you give an example using syntax/parse and for that
apparently you need to use for-template which introduces bindings at
phase -1. Unfortunately phase -1 is not explained. One other thing
that could use some explanation is why racket uses phases in the first
place, given that other systems (I believe Larceny is the prime
example) have implemented a phase-less or phase-inferring macro system.

Marijn
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