From: Lars Magne Ingebrigtsen <larsi@gnus.org>
Date: Sat, 2 Jul 2011 20:59:18 +0000 (+0200)
Subject: * simple.el (shell-command-on-region): Say where the error output
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* simple.el (shell-command-on-region): Say where the error output
went if `shell-command-default-error-buffer' is set.
---

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 8267f44d3c2..2b13d587779 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,8 @@
+2011-07-02  Lars Magne Ingebrigtsen  <larsi@gnus.org>
+
+	* simple.el (shell-command-on-region): Say where the error output
+	went if `shell-command-default-error-buffer' is set (bug#6857).
+
 2011-07-02  Ken Manheimer  <ken.manheimer@gmail.com>
 
 	* allout.el (allout-yank-processing): Adjust cursor position for
diff --git a/lisp/simple.el b/lisp/simple.el
index b36cf2ec3ec..6c078830a18 100644
--- a/lisp/simple.el
+++ b/lisp/simple.el
@@ -2531,7 +2531,10 @@ specifies the value of ERROR-BUFFER."
 	    (let ((output
 		   (if (and error-file
 			    (< 0 (nth 7 (file-attributes error-file))))
-		       "some error output"
+		       (format "some error output%s"
+			       (if shell-command-default-error-buffer
+				   (format " to the \"%s\" buffer" shell-command-default-error-buffer)
+				 ""))
 		     "no output")))
 	      (cond ((null exit-status)
 		     (message "(Shell command failed with error)"))