How do I pass properties that may be undefined through <antcall> without
having them expanded to a string such as '${x}' (which evaluates to true)?
A possible solution may be to use <reference> rather than <parameter>, but I
am not sure how this would work in the example below.
<target
name="all"
>
<uptodate
property="alpha.skip"
srcfile="${alpha.source}"
targetfile="${alpha.output}"
/>
<antcall target="xml">
<param name="xml.source" location="${alpha.source}"/>
<param name="xml.output" location="${alpha.output}"/>
<param name="xml.skip" value="${alpha.skip}"/>
</antcall>
...
</target>
<target
name="xml"
unless="xml.skip"
>
<!-- Never executed! -->
</target>
--
Eric Jain
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