#include <Array.au3>
$testtext = "test  message: huhu " & @CRLF & "test message: testhuhu"



    $message = StringRegExp($testtext,"message:[a-zA-Z 0-9'<>#=""\/\\\-\*@\,\.\:\;]+", 3) ; geht
;~  $message = StringRegExp($testtext,"message:[:prnt:]+", 3)                             ;geht nicht...

MsgBox(0,"",$message &"|"& @error)
    _ArrayDisplay($message)