[("tests/examples/Structure13.hs:1:7: Warning: Redundant case\nFound:\n  case f v of\n      _ -> x\nWhy not:\n  x\n",[Replace {rtype = Expr, pos = SrcSpan {startLine = 1, startCol = 7, endLine = 1, endCol = 25}, subts = [("x",SrcSpan {startLine = 1, startCol = 24, endLine = 1, endCol = 25})], orig = "x"}])]