46 	POSITION gap;                   /* Gap between prev and next */  member
50  * "gap" needs some explanation: the gap of any particular line number
53  * gap of a line number is the gap which would be introduced if this
95 	anchor.gap = 0;  in clr_linenum()
101  * Calculate the gap for an entry.
106 	 * Don't bother to compute a gap for the anchor.  in calcgap()
107 	 * Also don't compute a gap for the last one in the list.  in calcgap()
108 	 * The gap for that last one should be considered infinite,  in calcgap()
113 	p->gap = p->next->pos - p->prev->pos;  in calcgap()
182 		 * gap, take it out and make it the spare.  in add_lnum()
185 		 * looking at the gap of the last one, which is  in add_lnum()
188 		mingap = anchor.next->gap;  in add_lnum()
191 			if (p->gap <= mingap)  in add_lnum()
194 				mingap = p->gap;  in add_lnum()