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我只是想知道在仅限于单字节代码点时可以安全使用哪些 unicode 块。
那么,哪个是最后一个单字节代码点,哪个是第一个多字节代码点?
在 UTF-8 中,最后一个单字节码点是U+007F,第一个 2 字节码点是U+0080。
U+007F
U+0080
见https://en.wikipedia.org/wiki/UTF-8#Encoding