Make tag source search string editable even if nothing matched

(Okay, this one is more of a feature request...)

When searching for a CD using a tag source you currently get a message box saying that no entries matched when nothing was found, but that box only has an OK button that completely exits from the tag search.

If, on the other hand, you get some matches, even if the one you're looking for isn't among them, you can click on a "Back" button in the selection dialog to go back and tweak your search terms.

Shouldn't it also be possible to edit your search terms when nothing was found?

np: 2562 - Enforcers (Aerial)