sort-strings ( strings -- sorted )
Collation and weak comparison

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collation-key/nfd ( string -- key nfd )

Vocabulary
unicode

Inputs

strings

a sequence of strings

Outputs

sorted

the strings in lexicographical order

Word description
This word takes a sequence of strings and sorts them according to the Unicode Collation Algorithm with the default collation order described in the DUCET. It uses code point order as a tie-breaker, except that U+FFFE sorts lowest so it can be used as a field separator.

Definition

USING: arrays assocs kernel sorting unicode.private ;

IN: unicode

: sort-strings ( strings -- sorted )
    [ [ collation-key/identical 2array ] keep ] map>alist
    sort-keys values ;