[("tests/examples/Default17.hs:1:7-23: Warning: Use last\nFound:\n  head (reverse xs)\nPerhaps:\n  last xs\n",[Replace {rtype = Expr, pos = SrcSpan {startLine = 1, startCol = 7, endLine = 1, endCol = 24}, subts = [("x",SrcSpan {startLine = 1, startCol = 21, endLine = 1, endCol = 23})], orig = "last x"}])]