YAZ_CHECK_EQ(wrbuf_len(w1), wrbuf_len(w2));
YAZ_CHECK(!memcmp(wrbuf_buf(w1), wrbuf_buf(w2), wrbuf_len(w2)));
YAZ_CHECK_EQ(input_section_id, output_section_id);
YAZ_CHECK_EQ(wrbuf_len(w1), wrbuf_len(w2));
YAZ_CHECK(!memcmp(wrbuf_buf(w1), wrbuf_buf(w2), wrbuf_len(w2)));
YAZ_CHECK_EQ(input_section_id, output_section_id);