anchor.diff:  mv(Source, Dest) ->
       case os:type() of
           {unix, _} ->
  -            EscSource = escape_spaces(Source),
  -            EscDest = escape_spaces(Dest),
  +            EscSource = escape_path(Source),
  +            EscDest = escape_path(Dest),
               {ok, []} = rebar_utils:sh(?FMT("mv ~s ~s", [EscSource, EscDest]),
                                         [{use_stdout, false}, abort_on_error]),
               ok;
  
positive.code: cp_r(Sources, Dest) ->
      case os:type() of
          {unix, _} ->
              EscSources = [escape_spaces(Src) || Src <- Sources],
              SourceStr = string:join(EscSources, " "),
              {ok, []} = rebar_utils:sh(?FMT("cp -R ~s \"~s\"",
                                             [SourceStr, Dest]),
  
negative.code:                   end, filelib:wildcard(Source)),
      ok.
  
  escape_path(Str) ->
      re:replace(Str, "([ ()?])", "\\\\&", [global, {return, list}]).
  