abbr. strlen
misc. character size ; character interval
UTF-8 和 UCS-2 的字符长度总结如下
The character length for UTF-8 and UCS-2 are summarized as follows
所有指令字符串都少于100个字符长度。
All instruction strings will be less than 100 characters in length.
当对非ascii字符建立索引时,最大字符长度将减少。
The maximum character length will be reduced when non-ASCII characters are indexed.
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