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https://issues.apache.org/jira/browse/TAPESTRY-2221?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Howard M. Lewis Ship reassigned TAPESTRY-2221:
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Assignee: Howard M. Lewis Ship
> Exception message when a context value is null or blank is confusing
> --------------------------------------------------------------------
>
> Key: TAPESTRY-2221
> URL: https://issues.apache.org/jira/browse/TAPESTRY-2221
> Project: Tapestry
> Issue Type: Bug
> Components: tapestry-core
> Affects Versions: 5.0.10
> Reporter: Howard M. Lewis Ship
> Assignee: Howard M. Lewis Ship
>
> Null or blank values are not allowed in the page activation context or event
> context because they are rendered out as nothing, and the consecutive slashes
> in the URL are ambiguously handled by servlet containers.
> However, the exception is the generic "parameter may not be blank" message
> from Defense.notBlank().
> A more specific error is required, which will inform the user about what was
> actually wrong.
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