From: Richard M. Stallman <rms@gnu.org>
Date: Fri, 9 Jan 1998 22:13:08 +0000 (+0000)
Subject: (sref): Defined.
X-Git-Tag: emacs-20.3~2469
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=6bb762b32476cd8f778a17f225e657f079a41728;p=emacs.git

(sref): Defined.
---

diff --git a/lisp/subr.el b/lisp/subr.el
index 6dd33424cd2..683c8e291b2 100644
--- a/lisp/subr.el
+++ b/lisp/subr.el
@@ -511,6 +511,12 @@ as returned by the `event-start' and `event-end' functions."
 (defalias 'compiled-function-p 'byte-code-function-p)
 (defalias 'define-function 'defalias)
 
+(defun sref (string byte-index)
+  (let ((byte 0) (char 0))
+    (while (< byte byte-index)
+      (setq byte (+ byte (char-bytes (aref string byte)))))
+    (aref string char)))
+
 ;; Some programs still use this as a function.
 (defun baud-rate ()
   "Obsolete function returning the value of the `baud-rate' variable.