Hi, I'm trying to check whether an attribute contains (or, actually starts with) a given string. I've tried a whole bunch of different combinations, but I've had no luck so far. Minimal example below. Anyone has a hint? Best, Denis %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% \startxmlsetups xml:test \xmlsetsetup{#1}{*}{-} \xmlsetsetup{#1}{doc|element}{xml:*} \stopxmlsetups \xmlregisterdocumentsetup{test}{xml:test} \startxmlsetups xml:doc \xmlflush{#1} \stopxmlsetups \startxmlsetups xml:element \xmlfilter{#1}{./find(attribute('class'), 'abc')/command(xml:whatever)} \xmldoifelse{#1}{./attribute('class')/contains('abc')} {Yes}{No} \stopxmlsetups \startxmlsetups xml:whatever Yes \stopxmlsetups \startbuffer[test] <?xml version="1.0" encoding="UTF-8"?> <doc> <element class="abcdefg">Yes</element> <element>No</element> </doc> \stopbuffer \starttext \xmlprocessbuffer{test}{test}{} \stoptext