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https://issues.apache.org/jira/browse/VELOCITY-904?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16994810#comment-16994810
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Thomas Mortagne commented on VELOCITY-904:
------------------------------------------
Actually I found another issue related to this retro compatibility option:
{code}
{{velocity}}
#macro(macro1 $return)
1: $return
#macro2($param2)
1: $return
#end
#macro(macro2 $return)
2: $return
#end
#macro1($param)
{{/velocity}}
{code}
1.7:
{noformat}
1: $param
2: $param2
1: $param
{noformat}
2.2-SNAPSHOT:
{noformat}
1: $param
2: $param2
1: $return
{noformat}
The sub macro call "break" the parameter.
> Add a flag for better backward compatibility with null macro arguments
> ----------------------------------------------------------------------
>
> Key: VELOCITY-904
> URL: https://issues.apache.org/jira/browse/VELOCITY-904
> Project: Velocity
> Issue Type: Improvement
> Components: Engine
> Affects Versions: 2.0
> Reporter: Claude Brisson
> Assignee: Claude Brisson
> Priority: Minor
> Fix For: 2.2
>
>
> See [this
> comment|https://issues.apache.org/jira/browse/VELOCITY-542?focusedCommentId=16621819&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-16621819]
> :
> {code}
> #macro(testmacro $parameter)
> $parameter
> #end
> #testmacro($return)
> {code}
> bq. which used to print "$return" (when $return is null or undefined) and we
> now get "$parameter".
>
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