[("tests/examples/Test16.hs:1:17-32: Warning: Use concatMap\nFound:\n  concat (map f x)\nPerhaps:\n  concatMap f x\n",[Replace {rtype = Expr, pos = SrcSpan {startLine = 1, startCol = 17, endLine = 1, endCol = 33}, subts = [("f",SrcSpan {startLine = 1, startCol = 29, endLine = 1, endCol = 30}),("x",SrcSpan {startLine = 1, startCol = 31, endLine = 1, endCol = 32})], orig = "concatMap f x"}])]