I have similar problem. I have text where non breaking space is present and some where not.
So now I want to search for both of them.
Let's say I have text "L_2" and "L 2", where _ is non breaking space and the other one is normal space.
How I can search for both occurrences. I tried it in FrameMaker12 with regular expression, but then the "\ " is not working.
re: Are there any other options for em-space and other spaces? Or this will work for all spaces?
Searching for [\x10|\x11|\x12|\x13|\x14|\x20]
with Wildcards enabled
finds all the spaces supported by FM7.
\x20 is hex notation for the normal space.
Not having FM8 or later, I can't tell you if the search dialog also supports \u1234 Unicode notation.