On Wed, Sep 18, 2019 at 4:48 PM John Cowan <xxxxxx@ccil.org> wrote:
 
(Arthur, would you in fact be amenable to maintaining my spreadsheet permanently if and when the time comes?  It would just mean adding rows when new SRFIs specified that they should be serializable to a binary format.) 

Certainly.  It doesn't sound like a lot of work, and if Scheme implementers decide to support your design, having a registry will be helpful.