Re: Goops, set! and define-syntax throuble

[Keith Wright]

> > The syntax (set! <setter> <value>) is a Guile extension (called
> > gerneralized set!), which is not supported by syntax-case, apparently.
> > syntax-case only allows the R5RS set! syntax.
> 
> This bug has been fixed in CVS Guile.  Please replace ice-9/psyntax.ss
> and ice-9/psyntax.pp with the following two files:
> 
> Content-Disposition: attachment; filename=psyntax.ss
> Content-Description: ice-9/psyntax.ss
> 
> ;;; Portable implementation of syntax-case
> ;;; Extracted from Chez Scheme Version 5.9f
> ;;; Authors: R. Kent Dybvig, Oscar Waddell, Bob Hieb, Carl Bruggeman

According to 'diff', the difference between this and the original
file by Dybvig et.al. is the addition of the following lines:

<       ((_ (getter arg ...) val)
<        (build-application s
<                         (chi (syntax (setter getter)) r w)
<                         (map (lambda (e) (chi e r w))
<                              (syntax (arg ... val)))))

but there should be a comment like:

;;; the following case was added by Mikael Djurfeldt
;;; to handle Guile's generalized SET! (2001-03-01)

(assuming that it was, in fact, MDJ who added the patch.)

GPL> cause the modified files to carry prominent notices
GPL> stating who last changed such files and the date

-- 
     -- Keith Wright  <address@hidden>

Programmer in Chief, Free Computer Shop <http://www.free-comp-shop.com>
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