sftnight@macphsft26 build % root
   ------------------------------------------------------------------
  | Welcome to ROOT 6.27/01                        https://root.cern/ |
  | (c) 1995-2022, The ROOT Team; conception: R. Brun, F. Rademakers |
  | Built for macosxarm64 on May 09 2022, 11:42:50                   |
  | From heads/master@v6-25-02-1202-g8dc4bc40fb                      |
  | With Apple clang version 13.1.6 (clang-1316.0.21.2.3)            |
  | Try '.help'/'.?', '.demo', '.license', '.credits', '.quit'/'.q'  |
   ------------------------------------------------------------------

root [0] whatever
input_line_9:2:3: error: use of undeclared identifier 'whatever'
 (whatever)
  ^
libc++abi: terminating with uncaught exception of type cling::CompilationException
sftnight@macphsft26 build %

% root
   ------------------------------------------------------------------
  | Welcome to ROOT 6.27/01                        https://root.cern |
  | (c) 1995-2022, The ROOT Team; conception: R. Brun, F. Rademakers |
  | Built for macosx64 on May 09 2022, 05:37:55                      |
  | From heads/master@v6-25-02-1201-g797bb5dce1                      |
  | With Apple clang version 13.1.6 (clang-1316.0.21.2.3)            |
  | Try '.help'/'.?', '.demo', '.license', '.credits', '.quit'/'.q'  |
   ------------------------------------------------------------------

root [0] whatever
input_line_13:2:3: error: use of undeclared identifier 'whatever'
 (whatever)
  ^
Error in <HandleInterpreterException>: Error evaluating expression (whatever)
Execution of your code was aborted.
root [1]