-if ($mode) {
- my $xorg = Data('data/digraphs-xorg');
- $_ = [ord $_] for values %{$xorg};
- $xorg->{$_}->[2] = # class = compatibility
- $di->{$_} ? $di->{$_}->[0] != $xorg->{$_}->[0] ? 'l1' : # conflict
- $di->{$_}->[2] eq 'l4' ? 'l5' : 'l3' : 'l2' # rfc|any|none
- for keys %{$xorg};
-
- for my $cp (map {$_->[0]} values %{$xorg}) {
- next if (state $seen = {})->{$cp}++; # List::MoreUtils::uniq
-
- # find multiple equivalent mnemonics
- my @equiv = grep {$cp eq $_->[0]}
- map {$xorg->{$_}} sort keys %{$xorg}; # values ordered by mnem.
-
- # search for the most compatible match
- my ($compat) = sort {
- $equiv[$b]->[2] cmp $equiv[$a]->[2] # highest level
- || $b <=> $a # fallback to last mnemonic
- } 0 .. $#equiv;
-
- # reclassify all but one as level 0 (omitted)
- splice @equiv, $compat // -1, 1, ();
- $_->[2] = 'l0 ex' for @equiv;
- }
-