-my %info = eval {
- require Unicode::UCD;
- map {
- $_ => Unicode::UCD::charinfo($di->{$_})
- || { block => '?', category => 'Xn', name => '', script => '' }
- } keys %{$di};
-};
-
-# add custom categories for certain blocks
-for (values %info) {
- $_->{category} .= ' Xa' if $_->{block} eq 'Basic Latin';
- $_->{category} .= ' Xl' if $_->{block} eq 'Latin-1 Supplement';
-}
-
-# mark unofficial extras as such
-$info{$_}->{category} .= ' Xz' for keys %{$extra};
-
-for (keys %{$di}) {
- $info{$_}->{string} = chr(9676) . chr($di->{$_}) if $info{$_}->{combining};
- # find control characters (first 32 chars from 0 and 128)
- next unless ($di->{$_} & ~0b1001_1111) == 0 or $di->{$_} == 127;
- # rename to something more descriptive
- $info{$_}->{name} = $info{$_}->{unicode10}
- ? '<'.$info{$_}->{unicode10}.'>' # the old name was much more useful
- : sprintf('<control U+%04X>', $di->{$_}); # at least identify by value
- # show descriptive symbols instead of control chars themselves
- $info{$_}->{string} = $di->{$_} < 32 ? chr($di->{$_} + 0x2400) : chr(0xFFFD);
-}
-# presentational string for some control(lish) entries
-$info{$_}->{string} = '-' for grep { $di->{$_} == 0x00AD } keys %{$di};
-$info{$_}->{string} = '␣' for grep { $di->{$_} == 0x200B } keys %{$di};
-$info{$_}->{string} = '|' for grep { $di->{$_} == 0x200C } keys %{$di};
-$info{$_}->{string} = '⁀' for grep { $di->{$_} == 0x200D } keys %{$di};
-$info{$_}->{string} = '→' for grep { $di->{$_} == 0x200E } keys %{$di};
-$info{$_}->{string} = '←' for grep { $di->{$_} == 0x200F } keys %{$di};
-
-# convert info hashes into arrays of strings to output in display order
-for my $row (values %info) {
- $row = [ map { $row->{$_} } qw/name category script string/ ];
- # strip off trailing missing values (especially string may be unknown)
- defined $row->[-1] ? last : pop @$row for 1 .. @$row;
-}