How to disable the Option-Space key combination for non-breaking spaces?

Question

How to disable the annoying Option-Space key combination for non-breaking spaces?

This is very very annoying in Eclipse or the terminal as I often type the non-breaking space instead of a regular one.

Answer 1

Make your ~/Library/KeyBindings/DefaultKeyBinding.dict file look like this (if it doesn’t exist create it, if there are already bindings in it just add the one from below):

{
"~ " = ("insertText:", " ");
}

What does this do? Every time you press Option-Space instead of inserting a non breaking space OS X now inserts a regular space. Problem fixed.