Deprecate open3.pl with a warning

diff --git a/lib/open3.pl b/lib/open3.pl
index 7fcc931..ab7fa5f 100644 (file)
--- a/lib/open3.pl
+++ b/lib/open3.pl
@@ -1,3 +1,6 @@
+# This legacy library is deprecated and will be removed in a future
+# release of perl.
+#
 # This is a compatibility interface to IPC::Open3.  New programs should
 # do
 #
@@ -7,6 +10,10 @@
 #
 #     require 'open3.pl';
 
+warn( "The 'open3.pl' legacy library is deprecated and will be"
+      . " removed in the next major release of perl. Please use the"
+      . " IPC::Open3 module instead." );
+
 package main;
 use IPC::Open3 'open3';
 1