Ignoring 'Reserved' Characters when converting from Tag to Filename

[ohrenkino]

see here:

Remove question marks and convert illegal characters when renaming from tags

Hello, I am a new user to MP3tag, but I must say I really like it. Here is my problem or what I want to do. It's about tag to filename converter. I would like to eliminate question marks and convert all other illegal characters to a dash. That's it! I would use $validate, except I don't want dashes in my filenames where there are ? in my tags. How can I replace ? with nothing and then replace all other illegal chars with just a dash? Thanks in advance, Tom.

The backslash is a valid character for filenames.