Deprecate fastcwd.pl with a warning

diff --git a/lib/fastcwd.pl b/lib/fastcwd.pl
index ecd87c8..1113348 100644 (file)
--- a/lib/fastcwd.pl
+++ b/lib/fastcwd.pl
@@ -2,12 +2,18 @@
 #
 # This library is no longer being maintained, and is included for backward
 # compatibility with Perl 4 programs which may require it.
+# This legacy library is deprecated and will be removed in a future
+# release of perl.
 #
 # In particular, this should not be used as an example of modern Perl
 # programming techniques.
 #
 # Suggested alternative: Cwd
-#
+
+warn( "The 'fastcwd.pl' legacy library is deprecated and will be"
+      . " removed in the next major release of perl. Please use the"
+      . " Cwd module instead." );
+
 # Usage: $cwd = &fastcwd;
 #
 # This is a faster version of getcwd.  It's also more dangerous because