Hello all
I have a strange request.
I want to highlight any single character in my document that is not followed by a space.
My document is like this:

a b c s y op g d r j

In the case above, it should apply a red text highlight to the character o because it is followed by another character and not a space.

Is this possible, and if so, please could you point me in the right direction?
Thank you kindly.