Erik Nijenhuis
The contributor Erik Nijenhuis appears to be present as the CTAN community member MacLotsen.
Include annotated source files as LaTeX listings.
Display the value of a LaTeX counter in a variety of formats.
Display git project information in your LaTeX projects.
Option handling for LuaLaTeX packages.
Specifying placeholders for demonstration purposes.
Commands to include lilypond scores within a (Lua)LaTeX document.
Flexible drafting of legal documents, especially in Dutch.