From 2d8e81a591552ec3b66b35f08b29f9d3f1d1866c Mon Sep 17 00:00:00 2001
From: "Richard M. Stallman" <rms@gnu.org>
Date: Tue, 1 Feb 1994 00:16:31 +0000
Subject: [PATCH] (tabify): Don't delete back before initial START.

---
 lisp/tabify.el | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/lisp/tabify.el b/lisp/tabify.el
index ac2004dccda..16e65bddcde 100644
--- a/lisp/tabify.el
+++ b/lisp/tabify.el
@@ -39,11 +39,11 @@ The variable `tab-width' controls the spacing of tab stops."
       (narrow-to-region (point-min) end)
       (goto-char start)
       (while (search-forward "\t" nil t)	; faster than re-search
-	(let ((start (point))
+	(let ((tab-beg (point))
 	      (column (current-column))
 	      (indent-tabs-mode nil))
-	  (skip-chars-backward "\t")
-	  (delete-region start (point))
+	  (skip-chars-backward "\t" start)
+	  (delete-region tab-beg (point))
 	  (indent-to column))))))
 
 ;;;###autoload
-- 
2.39.5