github-569b.lvt

\input{test2e}

\RequirePackage{xparse}

\START

\DeclareDocumentCommand\foo{+oD(){bar}+m!>{\SplitList{;}}O{b;a;z}t^e{_^}E{^_}{{UP}{DOWN}}}
  {\typeout{##1:#1^^J##2:#2^^J##3:#3^^J##4:#4^^J##5:#5^^J##6:#6^^J##7:#7^^J##8:#8^^J##9:#9^^J}}

\ShowCommand\foo

\DeclareExpandableDocumentCommand\foo{moD||{bar}mO{b;a;z}+t^+e{_^}+R(){baz}}
  {\typeout{##1:#1^^J##2:#2^^J##3:#3^^J##4:#4^^J##5:#5^^J##6:#6^^J##7:#7^^J##8:#8^^J##9:#9^^J}}

\ShowCommand\foo

\DeclareDocumentCommand\foo{E{_^+-*/}{{A}{B}{C}}}
  {\typeout{##1:#1^^J##2:#2^^J##3:#3^^J##4:#4^^J##5:#5^^J##6:#6^^J}}

\ShowCommand\foo

\END