<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">NEVER MIND. I figured it out:<div> </div><div>; detects japanese characters ; contains-japanese-characters? str -> bool (define (contains-japanese-characters? s) (or (regexp-match #rx"[\u3041-\u3096]" s) ; Hiragana (regexp-match #rx"[\u30A0-\u30FF]" s) ; Katakana (Full Width) (regexp-match #rx"[\u3400-\u4DB5\u4E00-\u9FCB\uF900-\uFA6A]" s) ; Kanji (regexp-match #rx"[\u2E80-\u2FD5]" s) ; Kanji Radicals (regexp-match #rx"[\uFF5F-\uFF9F]" s) ; Katakana and Punctuation (Half Width) (regexp-match #rx"[\u3000-\u303F]" s) ; Japanese Symbols and Punctuation (regexp-match #rx"[\u31F0-\u31FF\u3220-\u3243\u3280-\u337F]" s) ; Misc. Japanese Symbols/Chars (regexp-match #rx"[\uFF01-\uFF5E]" s))) ; Alphanumeric and Punctuation (Full Width)</div><div> On Sep 16, 2014, at 09:22 , Geoffrey S. Knauth <<a href="mailto:geoff@knauth.org">geoff@knauth.org</a>> wrote: <blockquote type="cite">I'm writing a function to detect Japanese characters in a string. I found this page: <a href="http://www.localizingjapan.com/blog/2012/01/20/regular-expressions-for-japanese-text/">http://www.localizingjapan.com/blog/2012/01/20/regular-expressions-for-japanese-text/</a> So, for example, the example Perl regexp [\x{3041}-\x{3096}] would detect Hiragana characters (as would \p{Hiragana}). How do I express such a Unicode range with Racket regexps? I looked at the docs below and it wasn't obvious to me how to do it. In other languages there might be, for example, a \xnnnn or \uxxxx construct. http://docs.racket-lang.org/reference/regexp.html#%28elem._%28rxex._30%29%29 -- Geoffrey S. Knauth | http://knauth.org/gsk ____________________ Racket Users list: http://lists.racket-lang.org/users </blockquote> </div></body></html>