[plt-scheme] macro expension order

At Mon, 09 Jul 2007 17:21:28 -0600, Chongkai Zhu wrote:
> So here I would like to ask: what is the correct way to "define" 
> something that will apply before the match library see the pattern? 

Is `define-match-expander' what you're looking for? It allows you to
extend the syntax of patterns (which are not expressions, and so macro
bindings don't have any effect on them).

Matthew