- main_iter_ = 0;
- alternative_iter_ = 0;
- main_length_mom_ = src.main_length_mom_;
-
- if (src.alternative_iter_)
- alternative_iter_ = src.alternative_iter_->clone ();
- if (src.main_iter_)
- main_iter_ = src.main_iter_->clone ();
-
- if (main_iter_)
- scm_gc_unprotect_object (main_iter_->self_scm());
- if (alternative_iter_)
- scm_gc_unprotect_object (alternative_iter_->self_scm());