Unicode Numbers

[Joshua Lonsdale]

I'm not sure where to put this, so my appoligies.

I am currently creating a font that would likely include a sublookup.

To be fair, I currently understand that there is a private use area and that this

code is from U+8000 to U+F8FF.

Unfortunately, the font I am currently writing, is actually odd, but more importantly,

not sure exactly how to index these glyphs.

For example, the capital letter A is U+0041.

Now to append Aa would call U+0041 with U+0061

However this in the font I am working would actually be a singular glyph.

This process would likely repeat for all base-stardard combinations, such as

Ab, Ac, Ad, Ae, Af, Ag, Aj, Ak, Al, Am, An, Ap, Aq, Ar, As, At, Au, Av, Aw, Ax.

This process would also repeat for all base-standard combinations continued

into B, C, D, E, F, G, etc...

Furthermore a single glyph could also include Three Letter and Four Letter Combinations.

[Mihai Niță Ⓤ]

To me this looks like a job for the GSUB table 

https://learn.microsoft.com/en-us/typography/opentype/spec/gsub

There is no need to give a Unicode code point to each glyph (Ab, Aba, and so on).

I don't know if that's what you mean by indexing the glyphs. I thought that's what you mean because you mentioned PUA.

Mihai 

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