mktables: Extend Name_Alias property to early Unicode releases

This uses this property so that charnames can work on early Unicode
releases, by including all the aliases that were previously defined in
charnames until Unicode 6.1 started defining them itself.

diff --git a/lib/unicore/mktables b/lib/unicore/mktables
index 37f3ce3..03bf2a5 100644 (file)
--- a/lib/unicore/mktables
+++ b/lib/unicore/mktables
@@ -13173,6 +13173,12 @@ END
                                         Replace => $before_or_after);
     }
 
+    # But in this version only, the ALERT has precedence over BELL, the
+    # Unicode_1_Name that would otherwise have precedence.
+    if ($v_version eq v6.0.0) {
+        $perl_charname->add_duplicate(7, 'ALERT', Replace => $MULTIPLE_BEFORE);
+    }
+
     # Now that have everything added, add in abbreviations after
     # everything else.
     foreach my $value (keys %abbreviations) {