all_symbols

/*
 *  call-seq:
 *     Symbol.all_symbols    => array
 *  
 *  Returns an array of all the symbols currently in Ruby's symbol
 *  table.
 *     
 *     Symbol.all_symbols.size    #=> 903
 *     Symbol.all_symbols[1,20]   #=> [:floor, :ARGV, :Binding, :symlink,
 *                                     :chown, :EOFError, :$;, :String, 
 *                                     :LOCK_SH, :"setuid?", :$<, 
 *                                     :default_proc, :compact, :extend, 
 *                                     :Tms, :getwd, :$=, :ThreadGroup,
 *                                     :wait2, :$>]
 */

VALUE
rb_sym_all_symbols()
{
    VALUE ary = rb_ary_new2(sym_tbl->num_entries);

    st_foreach(sym_tbl, symbols_i, ary);
    return ary;
}