== barcode.lua ==
In 2012, user 'topskip' [[User:Patrick_Gundlach|Patrick]] published a small LuaTeX library on [https://tex.stackexchange.com/questions/50707/how-to-generate-ean-barcodes-with-tikz-or-metapost#50751 Stack Exchange]. It can only create EAN codes.
<texcode>