I made a CLI tool to expand tabs into aligned spaces, and vice versa infer the correct tabs from aligned spaces. It was a school project, so the documentation is in Czech (but code is in English 🙂), but feel free to contribute! I want this to actually be practical / at least inspire more practical tools, and to end the tabs-v-spaces debate with a compromise. The project is on https://github.com/ruza-net/columnator