It seems to be exported at phase 1:
Welcome to Racket v5.3.2.2.
> (begin-for-syntax prop:match-expander)
>
I'll fix the docs.
At Tue, 22 Jan 2013 02:14:23 -0500, Stephen Chang wrote:
> Trying to use prop:match-expander but it doesn't seem to be available:
>
> http://pre.racket-lang.org/docs/
Trying to use prop:match-expander but it doesn't seem to be available:
http://pre.racket-lang.org/docs/html/reference/match.html?q=prop%3Amatch-expander#%28def._%28%28lib._racket%2Fmatch..rkt%29._prop~3amatch-expander%29%29
Welcome to DrRacket, version 5.3.1.3 [3m].
Language: racket [custom].
> (
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