Re: [Chicken-users] match and syntax-case conflict?

[Jacques Vidrine]

On Feb 3, 2008, at 10:49 AM, Kon Lovett wrote:
> On Feb 3, 2008, at 10:38 AM, Jacques Vidrine wrote:
> > Hello,
> >
> > Is it not currently possible to use match and syntax-case together?
> >
> > $ csi -n
> >
> > CHICKEN
> > Version 3.0.0 - macosx-unix-gnu-x86	[ manyargs dload ptables  
> > applyhook ]
> > (c)2000-2008 Felix L. Winkelmann	compiled 2008-01-31 on madman  
> > (Darwin)
> >
> > #;1> (load-verbose #f)
> > #;2> (use match)
> > #;3> (match '(1 2) [(a . b) b])
> > (2)
> > #;4> (use syntax-case)
> > #;5> (match '(1 2) [(a . b) b])
> > Error: invalid syntax: (a . b)
> > #;5> ^D
>
> Use the 'matchable' egg. The "hygienic" match macro. HTH

Hi Kon,

Thanks!  So, the standard "match" extension is incompatible with  
"syntax-case".  Perhaps the documentation for "match" should mention  
this, as it was not obvious what the problem was for awhile when I ran  
into it.

Am I correct to assume that this is because a compatible "match"  
implementation is not possible without a dependence on a hygienic  
macro implementation, and that Chicken does not wish to include a  
standard hygienic macro implementation?

Cheers,
--
Jacques