If the tool silently rebuilds the index in the background, it’s even worse. Then I don’t know if the search results are correct or not.
It doesn’t have to mean that. It could respond to your search by walking the directory structure checking last-modification times, comparing them against its index, and updating anything that’s been modified.
It doesn’t have to mean that. It could respond to your search by walking the directory structure checking last-modification times, comparing them against its index, and updating anything that’s been modified.