+for my $layout ('macos-abc', 'windows') {
+ eval {
+ my $kbd = do "./keyboard/altgr/$layout.eng.inc.pl" or die $@ || $!;
+ my @def = map { values %{$_} } values %{ $kbd->{def} }
+ or die 'missing key definitions';
+ $info{$_} //= {} for map {s/◌//g; m/\A./g} map { $_->[1] // () } @def;
+ 1;
+ } or warn "Failed reading additional keyboard map $layout: $@";
+}
+