can't output sequences from p:try (XD0007)

[josteinaj]

This pipeline should output a sequence of two documents (works with calumet), but it fails with a XD0007 error:

<?xml version="1.0" encoding="UTF-8"?>
<p:declare-step xmlns:p="http://www.w3.org/ns/xproc" version="1.0">
    <p:input port="source">
        <p:inline>
            <doc/>
        </p:inline>
    </p:input>
    <p:output port="result" sequence="true"/>

    <p:try>
        <p:group>
            <p:output port="result" sequence="true"/>
            <p:identity>
                <p:input port="source">
                    <p:inline>
                        <doc1/>
                    </p:inline>
                    <p:inline>
                        <doc2/>
                    </p:inline>
                </p:input>
            </p:identity>
        </p:group>
        <p:catch>
            <p:output port="result" sequence="true"/>
            <p:identity>
                <p:input port="source">
                    <p:inline>
                        <doc>caught error</doc>
                    </p:inline>
                </p:input>
            </p:identity>
        </p:catch>
    </p:try>

</p:declare-step>

~$ calabash debug-catch-sequence.xpl 
jun 02, 2013 8:57:35 PM com.xmlcalabash.util.DefaultXProcMessageListener error
SEVERE: err:XD0007:XD0007
jun 02, 2013 8:57:35 PM com.xmlcalabash.drivers.Main error
SEVERE: If sequence is not specified on p:output, or has the value false, then it is a dynamic error if the step does not produce exactly one document on the declared port.

(using calabash 1.0.9)

[ndw]

Thanks. Fixed that for p:choose a while back but missed the p:try case.