rb_str_shared_replace  583 include/ruby/intern.h void rb_str_shared_replace(VALUE, VALUE);
rb_str_shared_replace 2832 string.c           rb_str_shared_replace(str, rb_str_succ(str));
rb_str_shared_replace 3598 string.c               rb_str_shared_replace(str, dest);
rb_str_shared_replace 3875 string.c       	    rb_str_shared_replace(str, rb_str_reverse(str));
rb_str_shared_replace 2574 transcode.c        rb_str_shared_replace(str, newstr);