anchor.diff:  stab_parens_many -> open_paren call_args_no_parens_kw close_paren : ['$2'].
   stab_parens_many -> open_paren call_args_no_parens_many close_paren : '$2'.
   
  -% Containers and function calls with parentheses
  +% Containers
   
   container_expr -> matched_expr : '$1'.
   container_expr -> unmatched_expr : '$1'.
  
positive.code:   bit_string open_bit close_bit
    map map_op map_close map_args map_expr struct_op
    assoc_op_eol assoc_expr assoc_base assoc_update assoc_update_kw assoc
    container_args_base container_args call_args_parens_base call_args_parens parens_call
    call_args_no_parens_one call_args_no_parens_expr call_args_no_parens_comma_expr
    call_args_no_parens_all call_args_no_parens_many call_args_no_parens_many_strict
    stab stab_eoe stab_expr stab_maybe_expr stab_parens_many
  
negative.code: container_args -> container_args_base ',' : lists:reverse('$1').
  container_args -> container_args_base ',' kw : lists:reverse(['$3'|'$1']).
  
  % Function calls with parentheses
  
  call_args_parens_expr -> matched_expr : '$1'.
  call_args_parens_expr -> unmatched_expr : '$1'.
  call_args_parens_expr -> no_parens_expr : throw_no_parens_many_strict('$1').
  
  call_args_parens_base -> call_args_parens_expr : ['$1'].
  call_args_parens_base -> call_args_parens_base ',' call_args_parens_expr : ['$3'|'$1'].
  
  call_args_parens -> empty_paren : [].
  call_args_parens -> open_paren no_parens_expr close_paren : ['$2'].
  