[acdha]

> Except that if you added a new file then "git commit -a" will miss it out.

Exactly like Mercurial, you mean? Try it if you haven't in a while: you have to call “hg add” to add a new file or you'll get “nothing changed” when you run "hg commit".

The reason why neither of them has a default “add everything in the current directory” mode is that this is how you end up with repositories containing temporary files, build artifacts, and secrets.

This is not a good example to base ”much better UI” claims on.