Re: [csswg-drafts] [css-text-4] `text-spacing` and OpenType halt/vhal/chws/vchw features (#8293)

I think this is one way the font designer could have control over mojikumi tsume (and therefore to some extent aki), but I still have concerns. The tsume amount (e.g. -50%) and aki amount (e.g. +50%) should normally be equal, but the purpose of the tsume amount is to normalize punctuation widths to the JIS X 4051 spec, so then added aki can be consistently applied between all class combinations, resulting in line compression or expansion. This is fine in the case of full width monospaced text, but what of punctuation whose design is not half-and-half? What about proportional typesetting? This is where the JIS spec lacks detail, and where one would hope the font could guide what happens with features. I feel these narrowing features are only part of the solution and defined in such a way as being more generalized than to solve JIS X 4051 (and beyond) spacing issues specifically. 

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Received on Tuesday, 31 January 2023 05:40:34 UTC