How to use Aquamacs on a non US keyboard? I occasionaly use Aquamacs on my Macbook Pro. I have also bought an Apple keyboard with a US english layout, because it is not practical to program on a Mac with a french (or more generally probably any non english) layout. These characters { } | \ ~ [ ] are not even on the keyboard, and you have to use various combinations of meta keys to get them.

Of course it doesn't work well when you need: M-\ , because typing backslash already requires meta keys.

So, how do you use Emacs on a non english keyboard, if that is even possible ? 

I could switch the built-in keyboard layout to english, but that's not really comfortable to use it for a long time. I do it when I have no other choices, for example when at some point I need a lot of braces, but that's just temporary.
In Aquamacs check the Options->Option,Commands,Meta keys menu. It allows you to switch the key bindings of the various meta keys. I have the same issue with the Swiss German keyboard and using M-; to toggle Meta/Alt behavior helps a lot.