The git and diagnostics views both have a setting show_on_dirs which makes parent folders display the same icon as the file. This is extremely helpful when they're collapsed I.e. if there is an error in /first/second/third.lua and the tree is collapsed, there will be an error icon next to first, indicating that there's a problem in one of its children. However, if both first and second are expanded, the icon is displayed on both parents as well as the file. As a visual cue, it exaggerates the number of "things", particularly when the tree expands far enough that they're not all visible at the same time.

Describe the solution you'd like
It would be really nice to have an option to display the icon only on the lowest visible leaf. E.g.

• if first is collapsed, display it on first
• if first is expanded but second is collapsed, display it on second
• if all are expanded, display it on third.lua