anchor.diff:          match -> true;
           nomatch -> false
       end.
  -
   
   %%
   %% Given env. variable FOO we want to expand all references to
  
positive.code:       end,
        [], Vars).
  
  
  %%
  %% Given a string, determine if it is expandable
  %%
  
negative.code:             %% and list of new binaries
              lists:foreach(
                fun({SoName,Bins}) ->
                        AllBins = [sets:from_list(Bins),
                                   sets:from_list(NewBins)],
                        Intersection = sets:intersection(AllBins),
                        case needs_link(SoName, sets:to_list(Intersection)) of
                            true ->
  