On 11 Jun 2016, at 02:47, Andrew Cunningham <lang.supp...@gmail.com> wrote:
> It can be done via a ligature. It would have to be a required ligature. Since > other ligature types may or may not be enabled in various contexts. And we > dont want default substitution and mark positioning to generate a > non-ligature equivalent. Aren’t all of the number combinations required ligatures? Michael