Mark cdl.el as obsolete

* lisp/obsolete/cdl.el: Add Obsolete-since header.  It is fully
replaceable by shell-command and shell-command-on-region.

(cherry picked from commit 7972a3448d53c515b074e6681fe3a369ada642d6)

diff --git a/lisp/obsolete/cdl.el b/lisp/obsolete/cdl.el
index 2ae76a908e4e0ece2786346490d32fa9218da777..d51ab9f68139352a1dc3a498edeeca1ecbb95e4c 100644 (file)
--- a/lisp/obsolete/cdl.el
+++ b/lisp/obsolete/cdl.el
@@ -5,6 +5,7 @@
 ;; Author: Ata Etemadi <ATAE@spva.physics.imperial.ac.uk>
 ;; Maintainer: emacs-devel@gnu.org
 ;; Keywords: data
+;; Obsolete-since: 31.1
 
 ;; This file is part of GNU Emacs.
 
@@ -23,6 +24,10 @@
 
 ;;; Commentary:
 
+;; This library is obsolete.
+;;
+;; Use `shell-command' and `shell-command-on-region' instead.
+
 ;;; Code:
 
 (defun cdl-get-file (filename)