Michael Sperber scripsit: > If the criterion is indeed how long it took implementations to > move to R5RS to R6RS, I'd welcome you to look at how long it took > implementations to move from R4RS to R5RS. If that's a fact that > measures community acceptance for a standard, then R5RS was an abysmal > failure, and you should start with something earlier.
It's not about "how long", it's about whether the implementation is going there or not. It's not clear to me whether Scheme 9 predates R5RS or not, but it is the only currently maintained implementation that targets R4RS. The other implementations marked with % don't target any Scheme standard at all (in the case of Owl Lisp, the subset of R5RS that excludes mutation is targeted). > What's the criterion for "attempt"? The same as any other sort of attempt. You attempt something if you have the intention to do it and take steps toward doing it. The Guile maintainers have (as they have stated) no intention of supporting R6RS in the future. The Scheme48 developers stated an intention, but have taken no publicly visible concrete steps. Neither one, therefore, is attempting to provide R6RS. By the same criteria, the eight implementations I mentioned *are* attempting it. > Anyway, I've said my part, and this is the extent to which I care. Very well. > It's your funeral. I'm taking steps to postpone that event. -- John Cowan [email protected] http://ccil.org/~cowan If I have seen farther than others, it is because I am surrounded by dwarves. --Murray Gell-Mann _______________________________________________ Scheme-reports mailing list [email protected] http://lists.scheme-reports.org/cgi-bin/mailman/listinfo/scheme-reports
