anchor.diff:  %% Given the filename from an include_lib attribute, if the path
   %% exists, return unmodified, or else get the absolute ERL_LIBS
   %% path.
  -maybe_expand_include_lib_path(File) ->
  -    case filelib:is_regular(File) of
  +maybe_expand_include_lib_path(File, Dir) ->
  +    case filelib:is_regular(filename:join(Dir, File)) of
           true ->
  -            [File];
  +            [filename:join(Dir, File)];
           false ->
               expand_include_lib_path(File)
       end.
  
positive.code:                     end
              end;
          false ->
              modify_erlcinfo(G, Source, filelib:last_modified(Source), Dirs)
      end.
  
  update_erlcinfo_fun(G, Dirs) ->
  
negative.code:                     digraph:del_vertex(G, Source),
                      modified;
                  LastModified when LastUpdated < LastModified ->
                      modify_erlcinfo(G, Source, LastModified, filename:dirname(Source), Dirs);
                  _ ->
                      Modified = lists:foldl(
                          update_erlcinfo_fun(G, Dirs),
  