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External Data Source

Source

Regular Expression
(?<!%)(?:%%)*%(?(([1-9]\d?)!([\-\+0\ \#])?(\d+|\*)?(\.\*|\.\d+)?([hLIw]|l{1,2}|I32|I64)?([cCdiouxXeEfgGaAnpsSZ])!)|(?:([1-9]\d?)(?![!\d])))