In order to make an auto title plugin for markata I needed to come up with a way to reverse the slug of a post to create a title for one that does not explicitly have a title.

a slug is generally all lowercase and free of spaces, and is a way to make website routes (urls)

Here I have a path available that gives me the articles path, ex.
python-reverse-sluggify.md. An easy way to get rid of the file
extension, is to pass it into pathlib.Path and ask for the stem, which returns python-reverse-sluggify. Then from There I chose to replace
- and _ with a space.

article["title"] = (
    Path(article["path"]).stem.replace("-", " ").replace("_", " ").title()
)

To turn this into a markata plugin I put it into a pre_render hook.

from pathlib import Path

from markata.hookspec import hook_impl, register_attr


@hook_impl
@register_attr("articles")
def pre_render(markata) -> None:
    for article in markata.filter('title==""'):
        article["title"] = (
            Path(article["path"]).stem.replace("-", " ").replace("_", " ").title()
        )