[option request] Repl. char for "invalid" filename

[Alextp]

Currently MRT replaces invalid chars in target filenames (if names are get from content plugins) with '_'.
IMHO, it must be an option: replacement can be '_', ' ', '-' or other character or even empty string. Can it be an "hidden" option in wincmd.ini?

[XPEHOPE3KA]

Support++. It can also be a button (with a further popup like it is for plugins button) in MRT dialog, and default setting (which would be used if the button isn't pressed or pressed and nothing chosen) should be in wincmd.ini. A hidden option is welcome too.