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https://issues.apache.org/jira/browse/TAP5-520?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12678992#action_12678992
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Igor Drobiazko commented on TAP5-520:
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Why "invalid" or "won't fix"? This is a bug. I have already a fix using
positive and negative lookahead. Was just thinking about test cases. Shall I
commit the fix?
> Using regular expressions with the @Validate annotation causes odd parse
> errors if the regexp includes common characters (including commas)
> -------------------------------------------------------------------------------------------------------------------------------------------
>
> 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
> Assignee: Igor Drobiazko
> Priority: Minor
>
> 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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