For our next demo, we're not going to build something original, but start with adapting an existing plugin that is already available for PostCSS. The plugin we will use is postcss-fontpath by Seane King (available from https://github.com/seaneking/postcss-fontpath); we're going to incorporate an autocomplete facility that automatically adds the relevant font stack, based on the name provided, and using the lists available at http://www.cssfontstack.com/.
"Why do this", I hear you ask? To prove a point—it isn't always necessary to re-invent the wheel; sometimes it is preferable to simply adapt something that exists, which doesn't quite fit our requirements. In this instance, the code we're adding will make it more useful; it will need some further development to allow for error-checking, but nonetheless still serves a purpose.