aboutsummaryrefslogtreecommitdiffstats
path: root/soundex.scm
diff options
context:
space:
mode:
Diffstat (limited to 'soundex.scm')
-rw-r--r--soundex.scm30
1 files changed, 15 insertions, 15 deletions
diff --git a/soundex.scm b/soundex.scm
index eb3a542..6d73341 100644
--- a/soundex.scm
+++ b/soundex.scm
@@ -8,16 +8,16 @@
; Taken from Knuth, Vol. 3 "Sorting and searching", pp 391--2
(require 'common-list-functions)
-
+;@
(define SOUNDEX
(let* ((letters-to-omit
- (list #\A #\E #\H #\I #\O #\U #\W #\Y))
+ (list #\A #\E #\H #\I #\O #\U #\W #\Y))
(codes
(list (list #\B #\1)
(list #\F #\1)
(list #\P #\1)
(list #\V #\1)
- ;
+ ;;
(list #\C #\2)
(list #\G #\2)
(list #\J #\2)
@@ -26,19 +26,19 @@
(list #\S #\2)
(list #\X #\2)
(list #\Z #\2)
- ;
+ ;;
(list #\D #\3)
(list #\T #\3)
- ;
+ ;;
(list #\L #\4)
- ;
+ ;;
(list #\M #\5)
(list #\N #\5)
- ;
+ ;;
(list #\R #\6)))
(xform
(lambda (c)
- (let ((code (assq c codes)))
+ (let ((code (assv c codes)))
(if code
(cadr code)
c)))))
@@ -50,10 +50,10 @@
(string->list name)))))
(if (null? char-list)
name
- (let* (; Replace letters except first with codes:
+ (let* ( ;; Replace letters except first with codes:
(n1 (cons (car char-list) (map xform char-list)))
- ; If 2 or more letter with same code are adjacent
- ; in the original name, omit all but the first:
+ ;; If 2 or more letter with same code are adjacent
+ ;; in the original name, omit all but the first:
(n2 (let loop ((chars n1))
(cond ((null? (cdr chars))
chars)
@@ -62,14 +62,14 @@
(cadr chars))
(loop (cdr chars))
(cons (car chars) (loop (cdr chars))))))))
- ; Omit vowels and similar letters, except first:
+ ;; Omit vowels and similar letters, except first:
(n3 (cons (car char-list)
(remove-if
(lambda (c)
- (memq c letters-to-omit))
+ (memv c letters-to-omit))
(cdr n2)))))
- ;
- ; pad with 0's or drop rightmost digits until of form "annn":
+ ;;
+ ;; pad with 0's or drop rightmost digits until of form "annn":
(let loop ((rev-chars (reverse n3)))
(let ((len (length rev-chars)))
(cond ((= 4 len)