Use local HTML on new tab in Firefox on ArchLinux in 2022
Recently I set out to customize my Firefox a little bit. I found this awesome Start Page thanks to /r/startpages which you can download here. Upon setting it up, and customizing it I realized the old method of userChrome.js doesn’t seem to work anymore for opening a local HTML file in a new tab. Annoying. After a little research, I’ve figured it out and documented it for anyone else running into this....