Comment 2 for bug 327963

> both combinations don't fully match the key labels.

I guess I'll take that back. Having the left Alt key perform as AltGr as it does in Mac OS X doesn't seem to make too much sense, as many applications expect the existence of an Alt/Meta key to invoke commands. The right Alt key works as AltGr and allows access to all those special symbols in the same location where OS X has them. Therefore, simply extending the definition to make macintosh_vndr/de(mac_nodeadkeys) an alias for macintosh_vndr/de(nodeadkeys) might be enough to avoid the error and yield reasonable results. That should be easy.