Multi-Rename Tool syntax in Copy dialog

Right now you can only choose a file mask like abc*.def* in the Copy dialog which autorenames a source file like testfile.extension to abctfile.defension in the target panel. This ability is obviously very limited, adding or cutting strings for example is not possible at all.

With the MRT syntax available in the Copy dialog one could easily autorename files like this:

File mask: [N5-].[E1-3]
Source file: testfile.extension
Target file: file.ext

File mask: string[N].r[C:2]
Source files: file1.extension ; file2.extension
Target files: stringfile1.r01 ; stringfile1.r02