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https://issues.apache.org/jira/browse/WW-4631?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Lukasz Lenart resolved WW-4631.
-------------------------------
    Resolution: Duplicate

> Empty <s:param name="p1" value=""/> is being supressed
> ------------------------------------------------------
>
>                 Key: WW-4631
>                 URL: https://issues.apache.org/jira/browse/WW-4631
>             Project: Struts 2
>          Issue Type: Bug
>          Components: Plugin - Tags
>    Affects Versions: 2.3.28
>            Reporter: Greg Lindholm
>            Priority: Minor
>             Fix For: 2.3.31, 2.5.3
>
>
> I discovered a problem with the <s:param /> tag when attempting to pass an 
> empty parameter.
> <s:url var="myUrl" action='MyAction'>
>      <s:param name="p1" value=""/>
>      <s:param name="p2"></s:param>
> </s:url>
> I was attempting to pass an empty parameter using the "p1" syntax above and 
> the parameter was being suppressed.
> Using the "p2" syntax it works correctly, and the empty parameter is included.
> The doc http://struts.apache.org/docs/param.html says that 
> "suppressEmptyParameters" defaults to false but the p1 parameter was always 
> suppressed even if I added suppressEmptyParameters="false".
> Also the doc http://struts.apache.org/docs/param.html has an incorrect 
> example on how to use the suppressEmptyParameters option.
> <s:param name="suppressEmptyParameters" value="true"/>



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