According to Marc, it seems that the debian package of gambit-c (which is not an "official" package) has syntax-case included by default for some reason. Therefore, using the debian version, try just not loading syntax-case manually.
Don't forget to clean (apt-get remove packagename --purge) your system of both versions, debian and source before reinstalling the package. Or even better, yet less "debianish", use only the source version. Debian choices are made to fit most of its users expectations, but know the programs less that their implementers.
Tell us if it fixes your problem
By the way, you may also do something with define-macro
(define-macro (unless condition act1 . action) `(if ,condition #f (begin ,act1 ,@action)))
(unless (= 1 3) (pp "phew") (pp "that was close !"))
(pp (unless (= 1 1) (pp "never happens"))) (pp (unless (= 1 2) (pp "whereas ") (pp "this happens") #t))
This should let you define our own syntax if you can't succeed in having syntax-case working (but remember of hygienic or not macros)
Hope it helps,
Adrien
On Fri, Jun 15, 2007 at 05:05:39PM +0200, Gabriel Kronberger wrote :
Hi,
This is probably a silly question but I'm having major troubles with define-syntax or syntax-rules.
I used to work with the gambit debian packages version 4.0b20 however it seems the necessary files (syntax-case.scm ...) are missing from the package. So I complied and installed 4.0b22. Now I can load the syntax-case.scm file however it seems I can't get a simple syntax definition to work. Even the simple example from the Gambit-C documentation doesn't work.
Gambit Version 4.0 beta 22
(load "~~syntax-case")
"/usr/local/Gambit-C/4.0b22/syntax-case.scm"
(define-syntax unless
(syntax-rules () ((unless test body ...) (if test #f (begin body ...))))) *** ERROR IN (console@3.15 -- Ill-formed expression
Unfortunately i couldn't find information on this problem in the documentation or the archives so i'm kinda stuck now. Any help is appreciated.
Thanks, Gabriel _______________________________________________ Gambit-list mailing list Gambit-list@iro.umontreal.ca https://webmail.iro.umontreal.ca/mailman/listinfo/gambit-list