Typing national characters in a slightly different way Typical way of typing national characters (if you need to use them) on a keyboard looks as follows:

This is an example for Polish ą character:


Push ALT.
Push a.
Release a.


As a result we 'll see ą on the screen.

Now, the question: I am looking for slightly more convenient solution:


Push and release ALT.
Push and release a.


As a result we 'll see ą on the screen as well.

I can easily configure emacs to behave like this. Do you know any hack/software or whatever which could allow me to use keyboard in all Mac applications?

Thanks!
Sticky Keys will do that.

System Prefs > Accessibility > Keyboard

It removes the need to hold a modifier key before pressing the associated key to be modified.



You can set options to make it switchable, beep when used, or display the modifier on-screen