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\u3055\u3066\u3001\u30a2\u30d7\u30ea\u3092\u4f5c\u6210\u3057\u3066\u3044\u3066helper\u304b\u3089
\u30bf\u30b0\u3092\u542b\u3081\u305f\u6587\u5b57\u5217\u3092\u8fd4\u3057\u305f\u304f\u306a\u3063\u305f\u6642\u304c\u3042\u308a\u307e\u3057\u305f\u3002
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\r\ndef example\r\n test = '\u30c6\u30b9\u30c8'\r\n str = test + tag.br + test\r\n str.html_safe\r\nend\r\n<\/pre>\n\u3053\u308c\u3067OK\u3067\u3059\u3002<\/p>\n
html_safe\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u308f\u306a\u3044\u3068\u3001
\u30bf\u30b0\u304c\u6587\u5b57\u5217\u3068\u3057\u3066\u8868\u793a\u3055\u308c\u307e\u3059\u3002
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