SCM scm_string_reverse_x (SCM str, SCM start, SCM end);
SCM scm_string_append_shared (SCM ls);
SCM scm_string_concatenate (SCM ls);
-SCM scm_reverse_string_concatenate (SCM ls, SCM final_string, SCM end);
SCM scm_string_concatenate_shared (SCM ls);
-SCM scm_reverse_string_concatenate_shared (SCM ls, SCM final_string, SCM end);
+SCM scm_string_concatenate_reverse (SCM ls, SCM final_string, SCM end);
+SCM scm_string_concatenate_reverse_shared (SCM ls, SCM final_string, SCM end);
SCM scm_string_map (SCM s, SCM proc, SCM start, SCM end);
SCM scm_string_map_x (SCM s, SCM proc, SCM start, SCM end);
SCM scm_string_fold (SCM kons, SCM knil, SCM s, SCM start, SCM end);