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Matches all CJK characters that are candidates for auto-splitting (Chinese, Japanese, Korean). Contains kana and BMP ideographs.

modules/search/search.module, line 90

<?php
define('PREG_CLASS_CJK', '\x{3041}-\x{30ff}\x{31f0}-\x{31ff}\x{3400}-\x{4db5}' .
'\x{4e00}-\x{9fbb}\x{f900}-\x{fad9}')
?>