&& and fi, fj, etc.

[pa-0]

So I just used this to patch Reddit Mono. For pretty much all of my purposes, it worked perfectly by the way, so thank you for this:

The only things I couldn't figure out: is uncommenting these particular ligatures all that's required to include them?

I feel I must have missed a step because the (uncommented) ligatures shown above were not added.

---

Also, the single ampersand has a named variant in Fira 3.1 (ss03)...

and the glyphs file in the fira repo includes some code for using the ampersand variant in the ampersand_ampersand ligature:

{
code =
   "sub ampersand by ampersand.ss03;
    sub ampersand_ampersand.liga by ampersand.ss03;
    sub ampersand.spacer' ampersand.ss03 by ampersand.before.ss03;
    sub  [ampersand ampersand.ss03]' [ampersand ampersand.ss03] by ampersand.before.ss03;"
name = ss03;
notes = "Name: Traditional Ampersand";
},

but it's never assigned a variant code, e.g. ampersand_ampersand.ss03.

Is there a way to use this variant ligature?