text: #ifndef MISSING_ANCIENT_RUBY_H
  #define MISSING_ANCIENT_RUBY_H
  
  #ifndef HAVE_RB_STR_SET_LEN
  static void my_str_set_len(VALUE str, long len)
  {
  	RSTRING(str)->len = len;
  	RSTRING(str)->ptr[len] = '\0';
  }
  #define rb_str_set_len(str,len) my_str_set_len((str),(len))
  #endif /* ! HAVE_RB_STR_SET_LEN */
  
  #ifndef RSTRING_PTR
  #  define RSTRING_PTR(s) (RSTRING(s)->ptr)
  #endif /* !defined(RSTRING_PTR) */
  #ifndef RSTRING_LEN
  #  define RSTRING_LEN(s) (RSTRING(s)->len)
  #endif /* !defined(RSTRING_LEN) */
  
  #ifndef RARRAY_PTR
  #  define RARRAY_PTR(s) (RARRAY(s)->ptr)
  #endif /* !defined(RARRAY_PTR) */
  #ifndef RARRAY_LEN
  #  define RARRAY_LEN(s) (RARRAY(s)->len)
  #endif /* !defined(RARRAY_LEN) */
  
  #endif /* MISSING_ANCIENT_RUBY_H */
  