Problems with SKIP in makemaker

[perl5.git] / lib / vars.pm

diff --git a/lib/vars.pm b/lib/vars.pm
index b951929..0b7dacc 100644 (file)
--- a/lib/vars.pm
+++ b/lib/vars.pm
@@ -14,10 +14,23 @@ This will predeclare all the variables whose names are
 in the list, allowing you to use them under "use strict", and
 disabling any typo warnings.
 
+Unlike pragmas that affect the C<$^H> hints variable, the C<use vars> and
+C<use subs> declarations are not BLOCK-scoped.  They are thus effective
+for the entire file in which they appear.  You may not rescind such
+declarations with C<no vars> or C<no subs>.
+
+Packages such as the B<AutoLoader> and B<SelfLoader> that delay loading
+of subroutines within packages can create problems with package lexicals
+defined using C<my()>. While the B<vars> pragma cannot duplicate the
+effect of package lexicals (total transparency outside of the package),
+it can act as an acceptable substitute by pre-declaring global symbols,
+ensuring their availability to to the later-loaded routines.
+
 See L<perlmod/Pragmatic Modules>.
 
 =cut
-require 5.000;
+
+require 5.002;
 use Carp;
 
 sub import {