This way common error codes can be in their own file.
To use, add the xmlns:xi="http://www.w3.org/2001/XInclude
attribute to the top level node and use:
<xi:include href="file-to-include.xml"/>
The content of the file will be included verbatim.
Include files must be complete XML documents, but without
<?xml version="1.0" ?> at the top. Practically this means
all nodes within the file need to be contained in one root
element.
Caveat: There is no proper dependency for Xincludes files in
the Makefile, so you need to do make clean after changing an
included XML file!
Signed-off-by: Indan Zupancic <indan@nul.nu>
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