Tree.walk() does not return the correct entries on "end" #928

Scenario files in your tree:

• test.txt
• foo/bar.txt

If you use tree.walk(), during the entry events, you will end up with test.txt and foo/bar.txt, but for the end event, you will get [foo/bar.txt, foo/bar.txt].

The end handler gives you files in the last tree it recursed through, with a duplicate entry for everything in it.