The commalist package for LaTeX

This is a LaTeX package that allows the user to define commands that accept comma-separated lists as arguments.

The motivation was that I wanted to automate something like

but I could not find anything suitable on the Internet. Since I happened to have some time, I wrote something for myself. Using commalist, the above can be achieved by

The current version of commalist is 1.1, which is dated 14 January, 2012.