A space will be inserted before and after any character which shows in the defined list.

When "Apply only when neighboring characters are letters or digits" is checked, space will be inserted before a character, only if the original character before it is a letter or a digit. Space will be inserted after a character, only if the original character after it is a letter or a digit.

The character which will be inserted is space in default, but can be changed by adding the Space Char filter to the apply list before this filter.



Example

Maintain space around:   -
"Apply only ..." is checked.

Aimee Mann-Stupid Thing.mp3    >>>   Aimee Mann - Stupid Thing.mp3
Aimee Mann- Stupid Thing.mp3    >>>   Aimee Mann - Stupid Thing.mp3    
Aimee Mann - Stupid Thing.mp3    >>>   Aimee Mann - Stupid Thing.mp3    (No spaces added)
Aimee Mann--Stupid Thing.mp3    >>>   Aimee Mann -- Stupid Thing.mp3    (No spaces added)