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                            no warnings;
                            eval { kill 0 * $prop };
                            $tainted = 1 if $@ =~ /^Insecure/;
                        }
                        die "Insecure user-defined property \\p{$prop}\n"
                            if $tainted;
                        no strict 'refs';
                        $list = &{$prop}($caseless);
                        $user_defined = 1;
                        last GETFILE;
                    }
                }

                require "$unicore_dir/UCD.pl";

                # All property names are matched caselessly
                my $property_and_table = CORE::lc $type;
                print STDERR __LINE__, ": $property_and_table\n" if DEBUG;

                # See if is of the compound form 'property=value', where the
                # value indicates the table we should use.
                my ($property, $table, @remainder) =
                                    split /\s*[:=]\s*/, $property_and_table, -1;
                if (@remainder) {
                    pop @recursed if @recursed;
                    return $type;
                }

                my $prefix;
                if (! defined $table) {

                    # Here, is the single form.  The property becomes empty, and
                    # the whole value is the table.
                    $table = $property;
                    $prefix = $property = "";
                } else {
                    print STDERR __LINE__, ": $property\n" if DEBUG;

                    # Here it is the compound property=table form.  The property
                    # name is always loosely matched, and always can have an
                    # optional 'is' prefix (which isn't true in the single
                    # form).
                    $property = loose_name($property) =~ s/^is//r;

                    # And convert to canonical form.  Quit if not valid.
                    $property = $loose_property_name_of{$property};
                    if (! defined $property) {
                        pop @recursed if @recursed;
                        return $type;
                    }

                    $prefix = "$property=";

                    # If the rhs looks like it is a number...
                    print STDERR __LINE__, ": table=$table\n" if DEBUG;

                    if ($table =~ $number) {
                        print STDERR __LINE__, ": table=$table\n" if DEBUG;

                        # Split on slash, in case it is a rational, like \p{1/5}
                        my @parts = split m{ \s* / \s* }x, $table, -1;
                        print __LINE__, ": $type\n" if @parts > 2 && DEBUG;

                        foreach my $part (@parts) {
                            print __LINE__, ": part=$part\n" if DEBUG;

                            $part =~ s/^\+\s*//;    # Remove leading plus
                            $part =~ s/^-\s*/-/;    # Remove blanks after unary
                                                    # minus

                            # Remove underscores between digits.
                            $part =~ s/(?<= [0-9] ) _ (?= [0-9] ) //xg;

                            # No leading zeros (but don't make a single '0'
                            # into a null string)
                            $part =~ s/ ^ ( -? ) 0+ /$1/x;
                            $part .= '0' if $part eq '-' || $part eq "";

                            # No trailing zeros after a decimal point
                            $part =~ s/ ( \. [0-9]*? ) 0+ $ /$1/x;

                            # Begin with a 0 if a leading decimal point
                            $part =~ s/ ^ ( -? ) \. /${1}0./x;

                            # Ensure not a trailing decimal point: turn into an
                            # integer
                            $part =~ s/ \. $ //x;

                            print STDERR __LINE__, ": part=$part\n" if DEBUG;
                            #return $type if $part eq "";
                        }

                        #  If a rational...
                        if (@parts == 2) {

                            # If denominator is negative, get rid of it, and ...
                            if ($parts[1] =~ s/^-//) {

                                # If numerator is also negative, convert the
                                # whole thing to positive, else move the minus
                                # to the numerator
                                if ($parts[0] !~ s/^-//) {
                                    $parts[0] = '-' . $parts[0];
                                }
                            }
                            $table = join '/', @parts;
                        }
                        elsif ($property ne 'nv' || $parts[0] !~ /\./) {

                            # Here is not numeric value, or doesn't have a
                            # decimal point.  No further manipulation is
                            # necessary.  (Note the hard-coded property name.
                            # This could fail if other properties eventually
                            # had fractions as well; perhaps the cjk ones
                            # could evolve to do that.  This hard-coding could
                            # be fixed by mktables generating a list of
                            # properties that could have fractions.)
                            $table = $parts[0];
                        } else {

                            # Here is a floating point numeric_value.  Convert