24 lines
771 B
Scheme
24 lines
771 B
Scheme
;;; -*-Scheme-*-
|
|
;;;
|
|
;;; The Scheme layer of the regexp extension is (almost) empty for now.
|
|
;;; It mainly exists to enable use of "(require 'regexp)".
|
|
|
|
(require 'regexp.la)
|
|
|
|
(define (describe-regexp r)
|
|
(format #t "a regular expression.~%")
|
|
(format #t "Its pattern is ~s,~%" (regexp-pattern r))
|
|
(format #t "and its flags are ~s.~%" (regexp-flags r)))
|
|
|
|
(define (describe-regexp-match m)
|
|
(format #t "a regular expression match.~%")
|
|
(let ((n (regexp-match-number m)))
|
|
(if (zero? n)
|
|
(format #t "It has no substring matches.~%")
|
|
(format #t "It has ~s substring match~a:~%" n (if (= n 1) "" "es"))
|
|
(do ((i 0 (1+ i))) ((= i n))
|
|
(format #t " ~s~%" (cons (regexp-match-start m i)
|
|
(regexp-match-end m i)))))))
|
|
|
|
(provide 'regexp)
|