[("tests/examples/Default6.hs:1:7: Error: Use concatMap\nFound:\n  concat $ map f x\nWhy not:\n  concatMap f x\n",[Replace {rtype = Expr, pos = SrcSpan {startLine = 1, startCol = 7, endLine = 1, endCol = 23}, subts = [("f",SrcSpan {startLine = 1, startCol = 20, endLine = 1, endCol = 21}),("x",SrcSpan {startLine = 1, startCol = 22, endLine = 1, endCol = 23})], orig = "concatMap f x"}])]