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Cling to 16 bit codepoints sounds like a legitimate explanation? Latin and Cyrillic didn't would have saved no relevant amount of space.

It looks like the CJK unified space is over 20,000 characters, so that's a real technical magnitude distinction compared to Latin and Cyrillic. "Asian languages be damned" seems like a bad faith read, compared to "Java and Windows char is 16 bits and that will never change realistically" (and in fact they still haven't, even in 2026 things which rely on UTF16 instead of UCS2 are still commonly bugged unfortunately)

by Joker_vD13 hours ago|

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We also have at least 15 copies of Latin alphabet in Unicode, all differently styled/fonted (there is chancery cursive, mathematical cursive, the fraktur version, the full-width version, etc.)

by gucci-on-fleek13 hours ago|

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Yes, but most of those are intended to be used exclusively for math, where the different styles do have semantic meaning. Even in introductory textbooks, it's pretty common to see the roman, calligraphic, and double-struck variants of a single letter all used with different meanings.

Plus, these characters were only added 20+ years later, and in the supplemental planes, not the BMP.

by Joker_vD13 hours ago|

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Letterlike Symbols and Fullwidth Forms are in BMP (and I generously consider Enclosed Alphanumerics to not be a copy of a Latin alphabet).

by gucci-on-fleek12 hours ago|

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Letterlike Symbols is a bit of a weird grab bag of characters, most of which are clearly distinct from their "regular" Latin versions, but I do agree that a few of them are pointless exact copies of regular Latin letters.

The fullwidth/halfwidth stuff is a bit of a mess, but you could argue that these are actually CJK characters that just happen to resemble Latin characters (much like how Greek and Cyrillic both happen to have letters that look a lot like the Latin "A"), since they only exist for compatibility with older CJK encodings. This wouldn't be a very good argument though :)

by knuckleheadsmif9 hours ago|

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That’s correct, it was deemed critical to making Unicode 16bits (although there were other good technical reasons but they would apply to unifying other languages as well.)