Checks no options with the name same are declared.
Test ab-option-007.xml is expected to fail with error code err:XS0004
.
<p:declare-step xmlns:err="http://www.w3.org/ns/xproc-error" xmlns:p="http://www.w3.org/ns/xproc" version="3.0">
<p:output port="result"/>
<p:option name="option"/>
<p:option name="option"/>
<p:identity>
<p:with-input>
<doc/>
</p:with-input>
</p:identity>
</p:declare-step>
Fix namespace declarations
Reversed @pipe-substructure. (->Prague 2018)
added new tests