[css-text-4] hanging-punctuation property not language-specific enough

[macnmm]

https://drafts.csswg.org/css-text-4/#hanging-punctuation-property

The list of hanging characters includes characters that should not hang if processing layout according to Japanese rules. At least there should be modifications to the behavior based on the language conventions being emulated.

For example, Latin period characters are used in Japanese layout, but should not hang; but Japanese period and comma should.

There are likely language-specific hanging conventions that would dictate the need for language-specificity in the behaviors.