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https://issues.apache.org/jira/browse/TAP5-845?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13113786#comment-13113786
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Hudson commented on TAP5-845:
-----------------------------

Integrated in tapestry-trunk-freestyle #538 (See 
[https://builds.apache.org/job/tapestry-trunk-freestyle/538/])
    TAP5-845: Informal Parameters are not allowed to have the value "" (the 
empty string)

hlship : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1174968
Files : 
* 
/tapestry/tapestry5/trunk/tapestry-core/src/main/java/org/apache/tapestry5/internal/services/BindingSourceImpl.java
* 
/tapestry/tapestry5/trunk/tapestry-core/src/main/java/org/apache/tapestry5/internal/services/ServicesMessages.java
* 
/tapestry/tapestry5/trunk/tapestry-core/src/main/resources/org/apache/tapestry5/internal/services/ServicesStrings.properties
* 
/tapestry/tapestry5/trunk/tapestry-core/src/test/java/org/apache/tapestry5/internal/services/BindingSourceImplTest.java


> Informal Parameters are not allowed to have the value "" (the empty string)
> ---------------------------------------------------------------------------
>
>                 Key: TAP5-845
>                 URL: https://issues.apache.org/jira/browse/TAP5-845
>             Project: Tapestry 5
>          Issue Type: Bug
>          Components: tapestry-core
>    Affects Versions: 5.2.0
>            Reporter: Howard M. Lewis Ship
>            Assignee: Howard M. Lewis Ship
>            Priority: Minor
>             Fix For: 5.3
>
>
> A simple component:
> @SupportsInformalParameters
> public class Img {
>       @Inject
>       private ComponentResources resources;
>       @Parameter(autoconnect = true, defaultPrefix = BindingConstants.CONTEXT)
>       private Asset src;
>       boolean beginRender(MarkupWriter writer) {
>               writer.element("img", "src", src);
>               resources.renderInformalParameters(writer);
>               writer.end();
>               return true;
>       }
> }
> Fails on:
> <t:img  src="images/stripe.gif" width="984" height="18" alt="" />
> With:
> Parameter 'alt' must have a non-empty binding.

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