[("tests/examples/Lambda28.hs:1:5: Warning: Avoid lambda\nFound:\n  \\ y -> nub $ reverse y\nWhy not:\n  nub . reverse\n",[Replace {rtype = Expr, pos = SrcSpan {startLine = 1, startCol = 5, endLine = 1, endCol = 26}, subts = [("a",SrcSpan {startLine = 1, startCol = 11, endLine = 1, endCol = 14}),("b",SrcSpan {startLine = 1, startCol = 17, endLine = 1, endCol = 24})], orig = "a . b"}])]