Regexp validator parse error
----------------------------

                 Key: TAP5-520
                 URL: https://issues.apache.org/jira/browse/TAP5-520
             Project: Tapestry 5
          Issue Type: Bug
          Components: tapestry-core
    Affects Versions: 5.0.18
            Reporter: Konstantin Miklevskiy


Try adding this field to your form:

@Validate("regexp=^([a-zA-Z0-9]{2,4})+$")
private String somefield;

Page will fail to render with exception saying:

Render queue error in BeginRender[mypage.somefield]: Failure reading parameter 
'validate' of component mypage.somefield: Coercion of ^([a-zA-Z0-9]{2 to type 
java.util.regex.Pattern (via String --> java.util.regex.Pattern) failed: 
Unclosed counted closure near index 15 ^([a-zA-Z0-9]{2 ^



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