I think French laws have been on website that’s like that for a while

The German parliament even has an official git repository: https://github.com/bundestag/gesetze

Looks like it's been abandoned, though. :(

The GitHub org being called “bundestag” doesn’t mean that it’s anything official. It looks like it’s made by independent activists.

	▲	codethief 7 hours ago \| parent [-]
		Oops, I should have checked this more carefully. Thanks!

Rexxar 10 hours ago | parent | prev [-]

If you go on particular laws, you can see the previous versions and how it changed. Example: https://www.legifrance.gouv.fr/codes/section_lc/LEGITEXT0000...

Click on "version" then "comparer" buttons and you will see a diff.