A text element can be a base character a surrogate pair or a combining character sequence.
文本元素可以是基字符、代理项对或组合字符序列。
A text element can be a base character, a surrogate pair, or a combining character sequence.
文本元素可以是基字符、代理项对或组合字符序列。
Matches a combining character sequence: that is any non-combining character followed by a sequence of zero or more combining characters.
匹配一个组合字符序列：即任意非组合字符后跟零个或多个组合字符。
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