Make cl-equalp a bit more efficient at comparing strings

* lisp/emacs-lisp/cl-extra.el (cl-equalp): Use compare-strings with
the IGNORE-CASE argument, rather than creating downcased copies of the
strings to be compared.

1 files changed, 1 insertions, 2 deletions

diff --git a/lisp/emacs-lisp/cl-extra.el b/lisp/emacs-lisp/cl-extra.el
index e9bfe8df5f2..323bbbbf947 100644
--- a/lisp/emacs-lisp/cl-extra.el
+++ b/lisp/emacs-lisp/cl-extra.el
@@ -72,8 +72,7 @@ strings case-insensitively."
   (cond ((eq x y) t)
         ((stringp x)
          (and (stringp y) (= (length x) (length y))
-              (or (string-equal x y)
-                  (string-equal (downcase x) (downcase y))))) ;Lazy but simple!
+              (eq (compare-strings x nil nil y nil nil t) t)))
         ((numberp x)
          (and (numberp y) (= x y)))
         ((consp x)