Move the Long-Tailed “Q” From Contextual Alternates to a Stylistic Set

[amarakon]

With contextual alternates (+calt), some people will want to turn off the long-tailed “Q” but keep the shorter ‘f’ so that it does not collide with a closing parenthesis, for example. Since both of these are assigned to calt, you have to either keep both of them or have neither of them. There is a workaround in LuaLaTeX, but definitely not in every typesetting system. I think it would be better to add a stylistic set that turns off the long-tailed “Q” instead of having to turn of calt.

[georgd]

This is more or less planned for v2. Both alternances are not historical, at least I haven't seen them so far. In case of these two letters, the long tailed Q and the long bowed f are the originals.

I'm going to implement a switch in cvXX rather than ssXX as it's a single character thing and the stylistic sets are very limited.

[KrasnayaPloshchad]

M$ Word have no way to access cvXX but ssXX.
https://power-type.com/enable-ligatures-in-microsoft-word/
https://support.microsoft.com/en-us/office/font-advanced-settings-b5b42f97-eda9-406a-b1f1-295cf2954c3d
https://support.microsoft.com/en-us/office/use-typographic-styles-to-increase-the-impact-of-your-publication-10e14096-452f-4d3b-9938-1d537572a377
So I believe make both these features available would be nice choice.