Line length on a line comment character leads to divergent formatting results

[mathstuf]

Configuration: https://gist.github.com/mathstuf/d28e774a3f7b3e7f058db1a65b1cf9f3

Source:

int
foo()
{
  a_long_function_name( some_arguments_that_take_up_space, another_argumen ); // MAYBE
}

With the given configuration, every time the file is formatted, a new empty comment is added. The line length lands on the second / in the comment token.

% uncrustify -c .uncrustify.cfg --replace comment-line-break.cxx
do_source_file: Parsing: comment-line-break.cxx as language CPP
% cat comment-line-break.cxx
int
foo()
{
  a_long_function_name( some_arguments_that_take_up_space, another_argumen ); //
                                                                              // MAYBE
}
% uncrustify -c .uncrustify.cfg --replace comment-line-break.cxx
do_source_file: Parsing: comment-line-break.cxx as language CPP
% cat comment-line-break.cxx
int
foo()
{
  a_long_function_name( some_arguments_that_take_up_space, another_argumen ); //
                                                                              //
                                                                              // MAYBE
}

% uncrustify -v
Uncrustify-0.78.1