[Larceny-users] ERR5RS Default Record Printer

[Ray Racine]

If ERR5RS records do not have a defined method for defining a default
printer (someone please point me in the right direction if they do) then
shouldn't they?  

Being able to define a default printer to a ERR5RS record seems a
desirable feature to standardize.

Just wondering if this was an ERR5RS record design oversight or a
conscious decision?

----------

On another note, I am porting foreign-ctools.sch to ERR5RS library and
am going over it and doing some testing this morning.  I'll post it
shortly.

Ray

On Sun, 2007-11-25 at 09:18 -0500, William D Clinger wrote:
> Ray Racine asked:
> > Is (record-updater (record-type-descriptor thread-rtd) 'printer) ...)
> > valid ERR5RS or shall it be considered as a Larceny and therefore
> > non-portable extension?
> 
> That's Larceny-specific and therefore non-portable.
> There are likely to be some implementations of ERR5RS
> that implement ERR5RS records as R6RS records, which
> means the record printer may not be customizable.
> 
> (Some implementations of R6RS records may support a
> similar extension, but portable code can't rely on
> any extension at all, and certainly can't rely on
> extensions being compatible with Larceny's.)
> 
> Will
> 
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