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Source for wiki DatumLabels version 3

author

WillClinger

comment

ipnr

127.11.51.1

name

DatumLabels

readonly

text

I tested datum-label support with the following expression:

{{{
        (let ((x '(#1=(a b) #1#))) (eq? (car x) (cadr x)))
}}}

Gauche, MIT, Bigloo, Kawa, Chez, Ikarus/Vikare, Larceny^*^, Mosh, STklos, !FemtoLisp, Sagittarius, Foment, Picrin support the syntax and return `#t`;

Racket, Chicken, Scheme48/scsh, Guile, SISC, SCM, Larceny^*^, Ypsilon, !IronScheme, NexJ, JScheme, KSi, !SigScheme, !TinyScheme, Scheme 9, RScheme, S7, XLisp, Rep, Schemik, Elk, SXM, Sizzle, Dfsch, Inlab, Oaklisp, Owl Lisp, Chibi (native mode) report lexical syntax errors;

Gambit, Shoe, BDC, UMB, Llava, Chibi (R7RS mode) return `#f` for whatever reason.

^*^Larceny v0.98 normally recognizes the syntax, but reports a lexical error in R6RS mode (as is required by the R6RS).

time

2015-06-01 04:56:44