How do I add or remove spaces from filenames?

I just installed your program. I would like to selectively add or remove spaces in all files in an extensive directory tree.
For example I would like to filter the tree for files matching *f*.xxx and then replace all filenames like
For example I would like to filter the tree for files matching *f*.xxx and then replace all filenames like
- Code: Select all
*fqq.xxx
- Code: Select all
* fqq.xxx
- Code: Select all
* fqq.xxx
- Code: Select all
* fqq.xxx