From: Eli Zaretskii <eliz@gnu.org>
Date: Mon, 14 May 2001 17:47:55 +0000 (+0000)
Subject: (elp-instrument-package): Don't allow empty prefixes.
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(elp-instrument-package): Don't allow empty prefixes.
---

diff --git a/lisp/emacs-lisp/elp.el b/lisp/emacs-lisp/elp.el
index 42dc1bc070b..af189126a09 100644
--- a/lisp/emacs-lisp/elp.el
+++ b/lisp/emacs-lisp/elp.el
@@ -323,6 +323,8 @@ For example, to instrument all ELP functions, do the following:
 
     \\[elp-instrument-package] RET elp- RET"
   (interactive "sPrefix of package to instrument: ")
+  (if (zerop (length prefix))
+      (error "Instrumenting all Emacs functions would render Emacs unusable."))
   (elp-instrument-list
    (mapcar
     'intern