Originally Posted by macropod

They can contain interactive content but, for what you described, that makes such a macro fairly pointless, since it's going to have to pause at each match and wait for user input, just as it would when using Find/Replace.

Yes, I don´t mind if the macro do a pause at each match and wait for my input. The reason why I want to do this with a macro is because searching with Wildcards only allows to find one item per Find/Replace. So, using a macro, we could find different type of spaces in one go.

Maybe I'm missing something here - you first asked whether a macro could supply the non-breaking spaces interactively. How is your re-worded requirement any different in that regard?