The package provides an expandable variant of the LaTeX kernel command \@testopt, named \@expandable@testopt, and a more general \@expandable@ifopt, both intended for package writers. Also we have a variant of \newcommand which uses these macros to check for optional arguments.
The author is Paul Ebermann. The package is Copyright © 2008 Paul Ebermann.
License: lppl Version: 0.3 Catalogued: 2014-02-26