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Date: Wed, 16 Sep 2009 17:15:59 -0700 (PDT)
From: "Howard M. Lewis Ship (JIRA)" <jira@apache.org>
To: commits@tapestry.apache.org
Subject: [jira] Created: (TAP5-845) Informal Parameters are not allowed to
 have the value "" (the empty string)
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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: 5.2.0.0
            Reporter: Howard M. Lewis Ship
            Priority: Minor


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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