Soninke needs an eng, it’s right there in the sample text

[simoncozens]

• Soninke needs an eng, it’s right there in the sample text
• Yucateco needs a MODIFIER LETTER APOSTROPHE
• Yapese also needs a modifier letter apostrophe
• Remove apostrophe from Maithali sample

[moyogo]

@simoncozens

• Soninke needs an eng, it’s right there in the sample text

It needs Ŋ as well as all capitals are listed. It also needs ñ (used in Senegal, Gambia, Mauritania) and ɲ (used in Mali).
See #201.

• Remove apostrophe from Maithali sample

https://www.unicode.org/L2/L2008/08197--bodo-dogri-maithili.pdf

Bodo, Dogri and Maithili languages are also written in Devanagari script. These
languages are using Latin Apostrophe (U+02BC) to denote special tone mark.
This tone maker is known as [...] Bikari Kaamaa (िबकारी कामा) in Maithili.

If that is not true in general practice (https://mai.wikipedia.org or https://www.ohchr.org/sites/default/files/UDHR/Documents/UDHR_Translations/mai.pdf doesn’t use it for example) and is only true in some contexts (https://udhr.audio/UDHR_Video.asp?lng=mai uses it for example), U+02BC should be moved to auxiliary.

[simoncozens]

I went with your PR instead of mine for Soninke. I think we need more clarity on what we're doing with ’. On the one hand, it's just a punctuation mark, you don't put . in base. On the other, we have fonts which will render the sample texts with tofu because they contain all the other characters but not ’ - in which case, ’ is required for correctly displaying the language. On the gripping hand, if it's something like a glottal stop, then that's clearly a "letter".

Do we need to invent a required_punctuation category? If so, then we need to audit the existing punctuation category to see which entries are required and which are optional. 🙃

[moyogo]

Yes, if it can be done, punctuation that is auxiliary should be moved to auxiliary.
Seeing how broken the snk_Latn (SLDR and gflanguages) or even the mg_Latn are (CLDR and SLDR, Hyperglot, gflanguages), more than punctuation should be reviewed.

For ’ U+2019, it’s difficult to be consistent as it is often used as a letter instead of ʼ U+02BC for the glottal stop. I’ve tried to only include it when it is listed as a letter in the alphabet in references.
There’s also / U+002F that is used in some languages as a letter and there’s no equivalent letter character for it, excluding the languages that use it as a fallback for ǀ U+01C0. The punctuation sign · U+00B7 also ends up in the base characters.