> .di d > foo > .di > .rm d
Output is only sent to the diversion when a break occurs, either explicitly with .br, or when enough text has been collected to fill a line, or in no-fill mode. Otherwise, the diversion remains empty, but a partially collected line exists when the end of input is encountered. This causes a page to be begun, but since the partially collected line is not forced out, the page remains empty. Try the following variations .di d foo .br .di .rm d and .di d foo .di .rm d .br to see this.
