sbuf_addf
sbuf_addf(s, "%d ", n);
sbuf_addf(&db,
sbuf_addf(&db, "some %s", item_name);
sbuf_addf(&db, "an %s", item_name);
sbuf_addf(&db, "[%d]", obj->class);
sbuf_addf(&db, "%+d ", obj->class);
sbuf_addf(&db, "%+d %s[%d] ", obj->d_enchant,
sbuf_addf(&db, "%+d,%+d %s",