CollationStrength

Primary

0 (Documentation: Compare base-character differences and ignore accents, case, and later collation levels.)

Secondary

1 (Documentation: Compare accent or diacritic differences after base characters match, while ignoring tertiary differences such as case.)

Tertiary

2 (Documentation: Compare case, letter variants, and similar tertiary differences after primary and secondary differences match.)

Quaternary

3 (Documentation: Distinguish punctuation, whitespace, symbols, or Japanese Hiragana/Katakana differences after the first three levels match.)

Identical

4 (Documentation: Use NFD Unicode code point order as a final tie-breaker after all other collation levels match.)

Num Values

5

Min Value

0

Max Value

4

Present since at least 1.60.1.70707, the first build we track.