I want to write a C extension module which runs automatically after a
source file has been read, but before it executes. I tried putting the 
following in the Init_ function:

  code = NEW_CALL(NEW_CONST(rb_intern("Stuff")), rb_intern("doIt"), 0);
  
  ruby_eval_tree_begin = block_append(ruby_eval_tree_begin, code);


However, this didn't work, because require_libraries in ruby.c saves
and restores the value in ruby_eval_tree_begin.

Is there another way to have my code run automatically?


Thanks


Dave