pandoc-3.10.1: test/command/5682.md
```
% pandoc -t native -f latex
\newcommand{\ittakestwo}[2][defaultone]{#2}
\ittakestwo[to]{tango}
^D
[ Para [ Str "tango" ] ]
```
```
% pandoc -t native -f latex
\newcommand{\ittakestwo}[2][defaultone]{#2}
\ittakestwo[to]{tango}
^D
[ Para [ Str "tango" ] ]
```