Exclude all files from the tree listing

Question

Is it possible to conjure a :filter that excludes all files?

Would like to display the tree view, but only with folders.

Answer 1

Yes, all directory entries have implicit trailing slash which can be used for searching or filtering. Try

:filter! {*/}

Comments

It does work, albeit with a little side-effect:

Could you think of a way to filter-out the .. as well?

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You can't filter-out those, but you can prevent them from being added via 'dotdirs':

set dotdirs-=treeleafsparent