82 	PLAN *tail;		/* pointer to tail of subplan */  in yankexpr()  local
96 		for (tail = subplan = NULL;;) {  in yankexpr()
115 					tail = subplan = next;  in yankexpr()
117 					tail->next = next;  in yankexpr()
118 					tail = next;  in yankexpr()
120 				tail->next = NULL;  in yankexpr()
134 	PLAN *tail;		/* pointer to tail of result plan */  in paren_squish()  local
137 	result = tail = NULL;  in paren_squish()
153 			tail = result = expr;  in paren_squish()
155 			tail->next = expr;  in paren_squish()
156 			tail = expr;  in paren_squish()
158 		tail->next = NULL;  in paren_squish()
172 	PLAN *tail;		/* pointer to tail of result plan */  in not_squish()  local
175 	tail = result = next = NULL;  in not_squish()
212 			tail = result = next;  in not_squish()
214 			tail->next = next;  in not_squish()
215 			tail = next;  in not_squish()
217 		tail->next = NULL;  in not_squish()
230 	PLAN *tail;		/* pointer to tail of result plan */  in or_squish()  local
233 	tail = result = next = NULL;  in or_squish()
264 			tail = result = next;  in or_squish()
266 			tail->next = next;  in or_squish()
267 			tail = next;  in or_squish()
269 		tail->next = NULL;  in or_squish()