/usr/share/elk/srfi-88.scm is in anfo 0.98-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 | ; Everything in here was copied nearly verbatim from
; http://srfi.schemers.org/srfi-88/srfi-88.html, therefore:
;
; Copyright (C) Marc Feeley (2006). All Rights Reserved.
; Permission is hereby granted, free of charge, to any person obtaining
; a copy of this software and associated documentation files (the
; "Software"), to deal in the Software without restriction, including
; without limitation the rights to use, copy, modify, merge, publish,
; distribute, sublicense, and/or sell copies of the Software, and to
; permit persons to whom the Software is furnished to do so, subject to
; the following conditions:
;
; The above copyright notice and this permission notice shall be
; included in all copies or substantial portions of the Software.
;
; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
; MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
; IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
; CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
; TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
; SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
(define real-symbol? symbol?)
(define real-symbol->string symbol->string)
(define real-string->symbol string->symbol)
(define looks-like-an-unquoted-keyword?
(lambda (s)
(let ((n (string-length s)))
(and (> n 1)
(char=? (string-ref s (- n 1)) #\:)))))
(set! symbol?
(lambda (obj)
(and (real-symbol? obj)
(not (looks-like-an-unquoted-keyword?
(real-symbol->string obj))))))
(define keyword?
(lambda (obj)
(and (real-symbol? obj)
(looks-like-an-unquoted-keyword?
(real-symbol->string obj)))))
(set! symbol->string real-symbol->string)
(define keyword->string
(lambda (k)
(let* ((s (real-symbol->string k))
(n (string-length s)))
(substring s 0 (- n 1))))) ; remove the colon
(set! string->symbol
(lambda (s)
(if (looks-like-an-unquoted-keyword? s)
(error "sorry... the symbol would look like a keyword!")
(real-string->symbol s))))
(define string->keyword
(lambda (s)
(let ((s-colon (string-append s ":")))
(if (looks-like-an-unquoted-keyword? s-colon)
(real-string->symbol s-colon)
(error "sorry... the keyword would look like a symbol!")))))
(provide 'srfi-88)
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