Comment by Rendello

I hate any editor changing anything without permission (especially ones that insert the closing paren/bracket).

I used to love Linux's compose keys, though, where I could just press `<win>--.` to get an en dash and `<win>---` to get an em. Most of the compose combinations were guessable, like `<win>a'` for á, `<win>co` for ©.

MacOS has a great keyboard locale switcher, but the lack of real compose keys limits things. Most characters you can press and hold and get some accented versions, but it's very slow if you're typing in French or something in the EN layout. It also has a built-in character picker, which is really nice but even more slow.