[FIG(quote)[
[FIGCAPTION[
[1] [CITE@en[draft-hoehrmann-cp-collation-01 - The i;codepoint collation]]
([TIME[2016-01-10 03:51:47 +09:00]] 版)
<https://tools.ietf.org/html/draft-hoehrmann-cp-collation-01>
]FIGCAPTION]

> The i;codepoint collation is the same as the i;octet collation except
>    that it operates on sequences of Unicode scalar values, not octets.
>    Note that by definition the set of Unicode scalar values excludes the
>    surrogate code points and as such they do not occur in valid input.

]FIG]