use_v5.diff

diff --git a/src/Perl6/Grammar.pm b/src/Perl6/Grammar.pm
index abf96b7..c5f9177 100644
--- a/src/Perl6/Grammar.pm
+++ b/src/Perl6/Grammar.pm
@@ -1156,7 +1156,12 @@ grammar Perl6::Grammar is HLL::Grammar does STD {
         $<doc>=[ 'DOC' \h+ ]?
         <sym> <.ws>
         [
-        | <version>
+        | <version> <?{ ~$<version><vnum>[0] ne '5' }>
+        | 'v'? <?before '5'> {} $<vstr>=[<vnum>+ % '.' '+'?] {
+                my $module := $*W.load_module($/, 'v5', $*GLOBALish);
+                do_import($/, $module, 'v5');
+                $/.CURSOR.import_EXPORTHOW($module);
+            }
         | <module_name>
             {
                 $longname := $<module_name><longname>;