maximumLength generates onKeyUp JavaScript even if value is <= 0
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                 Key: TRINIDAD-1390
                 URL: https://issues.apache.org/jira/browse/TRINIDAD-1390
             Project: MyFaces Trinidad
          Issue Type: Bug
          Components: Components
    Affects Versions: 1.2.10-core
         Environment: Facelets 1.1.14, MyFaces core 1.2.4, Glassfish v2
            Reporter: Bart Kummel


When "columns" is set to a value > 1 on an tr:inputText, a textarea is rendered 
instead of an ordinary input. Since a textarea doesn't support the "maxlength" 
attribute, a JavaScript function is used to force the maximum input length if 
the "maximumLength" attrinute is used on the component. The value of 
"maximumLength" is used as a parameter for the JavaScript function. If this 
value is <= 0, this means no text can be typed in the textarea, the JavaScript 
function will prevent this. But according to the documentation, setting 
"maximumLength" to a value <= 0 should disable maximum length checking. If the 
"maximumLength" is not set at all, no JavaScript function call is added to the 
textarea. This should also happen if the value of "maximumLength" <= 0.

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