(assoc-ignore-representation): New function.

(assoc-ignore-case): Use compare-strings.

1 files changed, 15 insertions, 3 deletions

diff --git a/lisp/simple.el b/lisp/simple.el
index 1f547861886..2b9e0266020 100644
--- a/lisp/simple.el
+++ b/lisp/simple.el
@@ -3425,11 +3425,23 @@ The properties used on SYMBOL are `composefunc', `sendfunc',
   (put symbol 'hookvar (or hookvar 'mail-send-hook)))
 
 (defun assoc-ignore-case (key alist)
-  "Like `assoc', but assumes KEY is a string and ignores case when comparing."
-  (setq key (downcase key))
+  "Like `assoc', but ignores differences in case and text representation.
+KEY must be a string.  Upper-case and lower-case letters are treated as equal.
+Unibyte strings are converted to multibyte for comparison."
   (let (element)
     (while (and alist (not element))
-      (if (equal key (downcase (car (car alist))))
+      (if (eq t (compare-strings key 0 nil (car (car alist)) 0 nil t))
+          (setq element (car alist)))
+      (setq alist (cdr alist)))
+    element))
+
+(defun assoc-ignore-representation (key alist)
+  "Like `assoc', but ignores differences in text representation.
+KEY must be a string.  
+Unibyte strings are converted to multibyte for comparison."
+  (let (element)
+    (while (and alist (not element))
+      (if (eq t (compare-strings key 0 nil (car (car alist)) 0 nil))
           (setq element (car alist)))
       (setq alist (cdr alist)))
     element))