anchor.diff:      [{s, String}] -> handle_string_extractions(hd(Interpolations), Line, F, V, S);
       _ ->
         Transformer = fun(X, Acc) -> handle_string_extractions(X, Line, F, Acc, S) end,
  -      { List, VE } = build_list(Transformer, Interpolations, Line, V),
  -      { ?ELIXIR_WRAP_CALL(Line, erlang, list_to_binary, [List]), VE }
  +      build_list(Transformer, Interpolations, Line, V)
     end.
   
   % Handle string extractions for interpolated strings.
  
positive.code: % Variables can be defined inside the interpolation.
  transform({interpolated_regexp, Line, String, Operators }, F, V, S) ->
    { Flattened, VE } = handle_interpolations(String, Line, F, V, S),
    build_regexp(Line, Flattened, Operators, F, VE, S);
  
  % Handle binary operations.
  %
  
negative.code:   { Expr, NV } = Fun(H, V),
    build_list_each(Fun, T, Line, NV, { cons, Line, Expr, Acc }).
  
  % Build binaries
  build_bin(Line, Exprs) ->
    Transformer = fun (X) -> { bin_element, Line, X, default, default } end,
    { bin, Line, lists:map(Transformer, Exprs) }.
  
  % Build if/elsif/else clauses by nesting then one inside the other.
  % Assumes expressions were already converted.
  build_if_clauses({if_clause, Line, Bool, Expr, List}, Acc) ->
  