if ($list && ! $list_is_from_mktables) {
my $taint = substr($list,0,0); # maintain taint
- # Separate the extras from the code point list, and for
- # user-defined properties, make sure the latter are well-behaved
- # for downstream code.
- if ($user_defined) {
+ # Separate the extras from the code point list, and make sure
+ # user-defined properties and tr/// are well-behaved for
+ # downstream code.
+ if ($user_defined || $none) {
my @tmp = split(/^/m, $list);
my %seen;
no warnings;