rb_io_oflags_fmode  146 include/ruby/io.h int rb_io_oflags_fmode(int oflags);
rb_io_oflags_fmode  159 include/ruby/io.h #define rb_io_modenum_flags(oflags) rb_io_oflags_fmode(oflags)
rb_io_oflags_fmode 4059 io.c                   fmode = rb_io_oflags_fmode(oflags);
rb_io_oflags_fmode 5819 io.c               return prep_io(fd, rb_io_oflags_fmode(oflags), klass, path);
rb_io_oflags_fmode 5940 io.c                   fmode = rb_io_oflags_fmode(oflags);