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(soundex-alist): Delete the elements that mapped into nil.

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This commit is contained in:
Richard M. Stallman 1994-06-23 19:39:22 +00:00
parent c892673b75
commit c0b5499016
1 changed files with 2 additions and 3 deletions
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5
lisp/soundex.el
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@ -31,8 +31,7 @@
;;; Code:
(defvar soundex-alist
'((?A . nil) (?E . nil) (?H . nil) (?I . nil) (?O . nil) (?U . nil)
(?W . nil) (?Y . nil) (?B . "1") (?F . "1") (?P . "1") (?V . "1")
'((?B . "1") (?F . "1") (?P . "1") (?V . "1")
(?C . "2") (?G . "2") (?J . "2") (?K . "2") (?Q . "2") (?S . "2")
(?X . "2") (?Z . "2") (?D . "3") (?T . "3") (?L . "4") (?M . "5")
(?N . "5") (?R . "6"))
@ -46,7 +45,7 @@ and Searching\", Addison-Wesley (1973), pp. 391-392."
(let* ((word (upcase word)) (length (length word))
(code (cdr (assq (aref word 0) soundex-alist)))
(key (substring word 0 1)) (index 1) (prev-code code))
;; once we have a four char key, were done
;; once we have a four char key, we're done
(while (and (> 4 (length key)) (< index length))
;; look up the code for each letter in word at index
(setq code (cdr (assq (aref word index) soundex-alist))