do_scrub_begin ();
do_scrub_begin (flag_m68k_mri);
input_scrub_begin (){  know (strlen (BEFORE_STRING) == BEFORE_SIZE);  know (strlen (AFTER_STRING) == AFTER_SIZE || (AFTER_STRING[0] == '\0' && AFTER_SIZE == 1));  input_file_begin ();  buffer_length = input_file_buffer_size ();  buffer_start = xmalloc ((BEFORE_SIZE + buffer_length + buffer_length + AFTER_SIZE));  memcpy (buffer_start, BEFORE_STRING, (int) BEFORE_SIZE);  /* Line number things. */  logical_input_line = -1;  logical_input_file = (char *) NULL;  physical_input_file = NULL;	/* No file read yet. */  next_saved_file = NULL;	/* At EOF, don't pop to any other file */  do_scrub_begin ();}