p4raw-id: //depot/perl@31633
Currently glob patterns and filenames returned from File::Glob::glob()
are always byte strings. See L</"Virtualize operating system access">.
+=head2 Unicode and lc/uc operators
+
+Some built-in operators (C<lc>, C<uc>, etc.) behave differently, based on
+what the internal encoding of their argument is. That should not be the
+case. Maybe add a pragma to switch behaviour.
+
=head2 use less 'memory'
Investigate trade offs to switch out perl's choices on memory usage.