Ah, thanks! This should really be noted in the ‘Sample Implementation’ section of the specification.
Daphne > On 8 Jan 2025, at 11:27, Shiro Kawai <shiro.ka...@gmail.com> wrote: > > The SRFI needs to intercept the evaluation mechanism, so it's not supposed to > run as is in the bare REPL. > > See https://srfi-email.schemers.org/srfi-226/msg/21181936/ > > > On Tue, Jan 7, 2025 at 11:59 PM Daphne Preston-Kendal <d...@nonceword.org> > wrote: > See the subject line. Alas, I can’t offer much more help than this REPL > transcript: > > Chez Scheme Version 10.1.0 > Copyright 1984-2024 Cisco Systems, Inc. > > > (import (control-features)) > > (define my-tag (make-continuation-prompt-tag 'foo)) > > (continuation-prompt-available? my-tag) > Exception in dynamic-environment-metacontinuation: #f is not of type #<record > type dynamic-environment> > Type (debug) to enter the debugger. > > (call-with-continuation-prompt (lambda () (continuation-prompt-available? > > my-t > ag)) my-tag) > Exception in dynamic-environment-marks: #f is not of type #<record type > dynamic-environment> > Type (debug) to enter the debugger. > > (with-continuation-mark 'magic #t (current-continuation-marks)) > Exception: failed assertion continuation at line 436, char 10 of > control-features.sls > Type (debug) to enter the debugger. > > > Daphne >
