<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META content="text/html; charset=us-ascii" http-equiv=Content-Type> <META name=GENERATOR content="MSHTML 9.00.8112.16437"></HEAD> <BODY> <DIV><FONT size=2 face=Arial><SPAN class=598103816-17112011>How can I import Racket's versions of define-syntax and syntax-case into r5rs?</SPAN></FONT></DIV> <DIV><FONT size=2 face=Arial><SPAN class=598103816-17112011>I tried the following:</SPAN></FONT></DIV> <DIV><FONT size=2 face=Arial><SPAN class=598103816-17112011></SPAN></FONT> </DIV> <DIV><FONT size=2 face=Arial><SPAN class=598103816-17112011>#lang r5rs<BR>(#%require (only racket define-syntax syntax-case))</SPAN></FONT></DIV> <DIV><FONT size=2 face=Arial><SPAN class=598103816-17112011>(define-syntax (a stx) (syntax-case stx () (_ #'here)))</SPAN></FONT></DIV> <DIV> </DIV> <DIV><FONT size=2 face=Arial><SPAN class=598103816-17112011>Gives error: macro-transformer: only a `syntax-rules' form is allowed in: (syntax here)</SPAN></FONT></DIV> <DIV><FONT size=2 face=Arial><SPAN class=598103816-17112011></SPAN></FONT> </DIV> <DIV><FONT size=2 face=Arial><SPAN class=598103816-17112011>r5rs is not my choice. I use it for Phil Bewig's programming praxis.</SPAN></FONT></DIV> <DIV><FONT size=2 face=Arial><SPAN class=598103816-17112011></SPAN></FONT> </DIV> <DIV><FONT size=2 face=Arial><SPAN class=598103816-17112011>Thanks, Jos</SPAN></FONT></DIV></BODY></HTML>