Drop soundex.el

diff --git a/lisp/soundex.el b/lisp/soundex.el
deleted file mode 100644 (file)
index 6efc7f1..0000000
--- a/lisp/soundex.el
+++ /dev/null
@@ -1,65 +0,0 @@
-;;; soundex.el --- implement Soundex algorithm -*- lexical-binding: t -*-
-
-;; Copyright (C) 1993, 2001-2025 Free Software Foundation, Inc.
-
-;; Author: Christian Plaunt <chris@bliss.berkeley.edu>
-;; Maintainer: emacs-devel@gnu.org
-;; Keywords: matching
-;; Created: Sat May 15 14:48:18 1993
-
-;; This file is part of GNU Emacs.
-
-;; GNU Emacs is free software: you can redistribute it and/or modify
-;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation, either version 3 of the License, or
-;; (at your option) any later version.
-
-;; GNU Emacs is distributed in the hope that it will be useful,
-;; but WITHOUT ANY WARRANTY; without even the implied warranty of
-;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-;; GNU General Public License for more details.
-
-;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
-
-;;; Commentary:
-
-;; The Soundex algorithm maps English words into representations of
-;; how they sound.  Words with vaguely similar sound map to the same string.
-
-;;; Code:
-
-(defconst soundex-alist
-  '((?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"))
-  "Alist of chars-to-key-code for building Soundex keys.")
-
-(defun soundex (word)
-  "Return a Soundex key for WORD.
-Implemented as described in:
-Knuth, Donald E. \"The Art of Computer Programming, Vol. 3: Sorting
-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, 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))
-           index (1+ index)
-           ;; append code to key unless the same codes belong to
-           ;; adjacent letters in the original string
-           key (concat key (if (or (null code) (string= code prev-code))
-                               ()
-                             code))
-           prev-code code))
-    ;; return a key that is 4 chars long and padded by "0"s if needed
-    (if (> 4 (length key))
-       (substring (concat key "000") 0 4)
-      key)))
-
-(provide 'soundex)
-
-;;; soundex.el ends here

diff --git a/test/lisp/soundex-tests.el b/test/lisp/soundex-tests.el
deleted file mode 100644 (file)
index 82fcafb..0000000
--- a/test/lisp/soundex-tests.el
+++ /dev/null
@@ -1,43 +0,0 @@
-;;; soundex-tests.el --- tests for soundex.el -*- lexical-binding: t -*-
-
-;; Copyright (C) 2017-2025 Free Software Foundation, Inc.
-
-;; Maintainer: emacs-devel@gnu.org
-
-;; This file is part of GNU Emacs.
-
-;; GNU Emacs is free software: you can redistribute it and/or modify
-;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation, either version 3 of the License, or
-;; (at your option) any later version.
-
-;; GNU Emacs is distributed in the hope that it will be useful,
-;; but WITHOUT ANY WARRANTY; without even the implied warranty of
-;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-;; GNU General Public License for more details.
-
-;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
-
-;;; Commentary:
-
-;; Test `soundex-test-names' originally adapted from code in
-;; soundex.el by Christian Plaunt <chris@bliss.berkeley.edu>
-
-;;; Code:
-
-(require 'ert)
-(require 'soundex)
-
-(defconst soundex-test-name-list
- '("Euler" "Gauss" "Hilbert" "Knuth" "Lloyd" "Lukasiewicz"
-   "Ellery" "Ghosh" "Heilbronn" "Kant" "Ladd" "Lissajous")
- "Knuth's names to demonstrate the Soundex algorithm.")
-
-(ert-deftest soundex-test-names ()
-  (should
-   (equal (mapcar #'soundex soundex-test-name-list)
-          '("E460" "G200" "H416" "K530" "L300" "L222"
-            "E460" "G200" "H416" "K530" "L300" "L222"))))
-
-;;; soundex-tests.el ends here