Yeah, filters are great. Writing filters is easy: Pandoc basically converts the input document into a universal AST (json), and a filter is just any program tha

Yeah, filters are great. Writing filters is easy: Pandoc basically converts the input document into a universal AST (json), and a filter is just any program that takes this json as an input and outputs a modified json AST. I wrote a filter that automatically converts URL citstions in markdown to "real" citations in any style you want - very useful for writing papers without fighting with bibtex and managing bibliographies manually: https://github.com/phiresky/pandoc-url2cite https://github.com/phiresky/pandoc-url2cite