true
false
"a/b"
"a/b/c"
"/b/c"
some "a"
some "a/b"
none
some "b"
some "b"
some "b.tar"
some ".gitignore"
"a/c"
none
some "txt"
none
"a/b.tar.xz"
"a/b.tar"
"a/b.tar.gz"