rb_file_absolute_path 3703 file.c             return rb_file_absolute_path(argv[0], argc > 1 ? argv[1] : Qnil);
rb_file_absolute_path  474 include/ruby/intern.h VALUE rb_file_absolute_path(VALUE, VALUE);
rb_file_absolute_path  840 load.c             return rb_require_safe(rb_file_absolute_path(fname, base), rb_safe_level());