First impressions of the specification Mark H Weaver (22 Mar 2013 06:32 UTC)
Re: First impressions of the specification Alan Manuel Gloria (22 Mar 2013 09:23 UTC)
Re: First impressions of the specification David A. Wheeler (22 Mar 2013 12:49 UTC)
Re: First impressions of the specification John Cowan (22 Mar 2013 13:52 UTC)
Re: First impressions of the specification David A. Wheeler (22 Mar 2013 21:58 UTC)
Re: First impressions of the specification Mark H Weaver (23 Mar 2013 02:12 UTC)
Re: First impressions of the specification David A. Wheeler (25 Mar 2013 00:07 UTC)
Re: First impressions of the specification Mark H Weaver (26 Mar 2013 04:20 UTC)
Re: First impressions of the specification David A. Wheeler (26 Mar 2013 05:07 UTC)
Re: First impressions of the specification John Cowan (26 Mar 2013 08:48 UTC)
Re: First impressions of the specification Alan Manuel Gloria (26 Mar 2013 09:03 UTC)
Re: First impressions of the specification John Cowan (26 Mar 2013 09:28 UTC)
Re: First impressions of the specification Mark H Weaver (26 Mar 2013 12:04 UTC)
Re: First impressions of the specification David A. Wheeler (26 Mar 2013 13:13 UTC)
Re: First impressions of the specification David A. Wheeler (26 Mar 2013 05:08 UTC)
Re: First impressions of the specification David A. Wheeler (26 Mar 2013 21:49 UTC)
Re: First impressions of the specification Mark H Weaver (27 Mar 2013 01:43 UTC)
Re: First impressions of the specification David A. Wheeler (27 Mar 2013 03:49 UTC)
Re: First impressions of the specification Mark H Weaver (27 Mar 2013 05:24 UTC)
Re: First impressions of the specification Alan Manuel Gloria (27 Mar 2013 07:30 UTC)
Re: First impressions of the specification Mark H Weaver (27 Mar 2013 13:01 UTC)
Re: First impressions of the specification Alan Manuel Gloria (28 Mar 2013 02:20 UTC)
Re: First impressions of the specification David A. Wheeler (28 Mar 2013 02:45 UTC)
Re: First impressions of the specification David A. Wheeler (27 Mar 2013 21:31 UTC)
Re: First impressions of the specification Mark H Weaver (30 Mar 2013 16:12 UTC)
Re: First impressions of the specification David A. Wheeler (30 Mar 2013 18:15 UTC)
Re: OT: Formatting Lisp code from the command line Mark H Weaver (30 Mar 2013 21:36 UTC)
Re: OT: Formatting Lisp code from the command line John Cowan (30 Mar 2013 21:45 UTC)

Re: First impressions of the specification John Cowan 22 Mar 2013 13:52 UTC

David A. Wheeler scripsit:

> >   In particular, the abbreviations #', #`, #, and #,@
> >   are widely used by the syntax-case macro system.
>
> A fair point.  I didn't include them as requirements because
> R7RS drafts (currently draft 9) don't include them, but
> some sort of discussion does seem appropriate.

They ought to be included.  Not only does R6RS require them, but many
non-R6RS Schemes also provide syntax-case, often in the form of the
portable syntax expander.  However, Gauche, Chicken, STklos, and RScheme
provide SRFI-10, which conflicts with the syntax-case meaning of #,.
None of my other Schemes have any conflicts: they either implement
syntax-case or treat #, as an error.

> Perhaps something like "An implementation MAY support
> additional abbreviations, such as ..." and then listing those four.

Plausible.

--
De plichten van een docent zijn divers,         John Cowan
die van het gehoor ook.                         xxxxxx@ccil.org
      --Edsger Dijkstra                         http://www.ccil.org/~cowan