call site 8 for path.svnurl.relto
path/testing/fscommon.py - line 138
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   def test_visit_nodotfiles(self):
       l = []
       for i in self.root.visit(lambda x: x.check(dotfile=0)): 
->         l.append(i.relto(self.root))
       assert "sampledir" in l
       assert self.root.sep.join(["sampledir", "otherfile"]) in l
       assert not ".dotfile" in l