for (i = -1; i <= FOLD_POINTS; i++) {
msgbuf = fold_and_assemble(i, crlf, truncated);
check_folded_header(msgbuf.ptr, msgbuf.len);
for (i = -1; i <= FOLD_POINTS; i++) {
msgbuf = fold_and_assemble(i, crlf, truncated);
check_folded_header(msgbuf.ptr, msgbuf.len);