This is a Pandoc Lua filter that adds numbering to all headers in a document. You would use this when you want section numbering similar to what you get by default for LaTeX output, but with other output formats. See test/in/main.md for example input and test/expected/main.html for what the output looks like.
Download the pandoc-section-number-filter.lua file and use --lua-filter path/to/pandoc-section-number-filter.lua when when invoking pandoc.
Some test pandoc markdown files are in test/in and the corresponding outputs are in test/expected.
There is a script that will run pandoc on all the test files and diff the outputs against the expected outputs. To ensure you're using the intended version of pandoc, I suggest running them in Docker. If you have Docker installed and are on Mac/Linux, just run ./test/docker-test.sh to build the image and run the tests.
See the LICENSE file.