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https://issues.apache.org/jira/browse/VELOCITY-915?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Claude Brisson resolved VELOCITY-915.
-------------------------------------
Resolution: Fixed
Fix Version/s: 2.2
Fixed in trunk.
The last proposed flag, `event_handler.invalid_references.alternated`, wasn't
implemented (since it's a bit too complex to determine if an alternate value
has been used at some point in the evaluation of the reference).
> Allow invalid reference events for quiet references to improve backward
> compatibility
> -------------------------------------------------------------------------------------
>
> Key: VELOCITY-915
> URL: https://issues.apache.org/jira/browse/VELOCITY-915
> Project: Velocity
> Issue Type: Improvement
> Components: Engine
> Affects Versions: 2.0, 2.1
> Reporter: Pierre Post
> Assignee: Claude Brisson
> Priority: Major
> Fix For: 2.2
>
>
> Apache Velocity 2.0 changed the mechanism of sending invalid reference
> events. As of version 2.0, no events are generated in case of quiet
> references. As it is understandable to produce less irrelevant events for
> most use cases, there still exist some other use cases where these events
> must be received for quiet references. Besides, this was absolutely
> legitimate in versions 1.x and we now have projects that rely on that
> behavior but cannot be migrated to 2.x without further development effort.
> If there is no other way to reproduce the old 1.x behavior, please add an
> initialization parameter that enables the sending of invalid reference events
> for quiet references as this would greatly improve backwards compatibility
> with 1.x versions, e.g.
> {noformat}
> # Send invalid reference events for quiet references (false by default)
> eventhandler.invalidreferences.include.quiet_references = true{noformat}
> There already exist other parameters only to ensure backwards compatibility.
> Thank you very much.
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