how to match single character or space?

I have looked everywhere for how to do this.
Sometimes the filename is [character][number] [character] [character][number]
Sometimes the filename is [character][number] [space] [character][number]
Since "Character" doesn't include spaces, and neither does Symbol, I don't know how to achieve this.

You'll need to use two different conditions. You can nest them in an "any" condition if needed (look up nested conditions in the manual).

I know how to do conditionals, but I can't match just a space.
There doesn't seem to be a way.
You can match 1 non-blank character, or you can match "N of anything", but you can't match 1 blank character.

Are multiple spaces ok? Have you tried entering a space character?

Mr_Noodle wrote:Are multiple spaces ok? Have you tried entering a space character?

I was unaware that you could manually enter literal characters!

Mr_Noodle wrote:Are multiple spaces ok? Have you tried entering a space character?

I can match space literally, but is there a way to say "zero or more spaces" ?

That is how you do it.