Refactor elisp/anagram/anagrams-for

Reformat.

Use push macro over low-level list-manipulation.

elisp/anagram/anagram.el

@@ -29,18 +29,16 @@ CHAR-COUNT and COMPARISON-CHAR-COUNT should be alists in (character . count) for
               (setq are-equal nil))
         (setq are-equal nil)))))
 
-(defun anagrams-for(word anagrams)
+(defun anagrams-for (word anagrams)
   "Return all elements of ANAGRAMS which are anagrams for WORD.
 Case insensitive."
   (let ((candidates ())
         (word-char-count (get-char-count (downcase word))))
     (dolist (candidate anagrams candidates)
-      (if (and
-           (not (string-equal word candidate))
-           (equal (length word) (length candidate))
-           (equal-char-count word-char-count (get-char-count (downcase candidate))))
-          (if (> (length candidates) 0)
-              (add-to-list 'candidates candidate t)
-            (setq candidates (cons candidate nil)))))))
+      (when (and (not (string-equal word candidate))
+                 (= (length word) (length candidate))
+                 (equal-char-count word-char-count (get-char-count (downcase candidate))))
+        (push candidate candidates)))
+    (reverse candidates)))
 
 ;;; anagram.el ends here