anchor.diff:                          ?DEFAULT_COMPILER_SOURCE_FORMAT) of
           V when V == absolute;
                  V == relative;
  -               V == unchanged -> V;
  +               V == build -> V;
           Other ->
               ?WARN("Invalid argument ~p for compiler_source_format - "
                     "assuming ~s~n", [Other, ?DEFAULT_COMPILER_SOURCE_FORMAT]),
  
positive.code: -define(DEFAULT_OUTDIR, "ebin").
  -define(RE_PREFIX, "^[^._]").
  
  -type compiler_source_format() :: absolute | relative | unchanged.
  -define(DEFAULT_COMPILER_SOURCE_FORMAT, unchanged).
  
  %% ===================================================================
  %% Public API
  
negative.code:     resolve_linked_source(Src);
  format_error_source(Src, relative, Cwd) ->
      rebar_dir:make_relative_path(resolve_linked_source(Src), Cwd);
  format_error_source(Src, build, _Cwd) ->
      Src.
  
  resolve_linked_source(Src) ->
  