72 	PLAN *tail;		/* pointer to tail of subplan */  in yankexpr()  local
87 		for (tail = subplan = NULL;;) {  in yankexpr()
106 					tail = subplan = next;  in yankexpr()
108 					tail->next = next;  in yankexpr()
109 					tail = next;  in yankexpr()
111 				tail->next = NULL;  in yankexpr()
125 	PLAN *tail;	/* pointer to tail of result plan */  in paren_squish()  local
128 	result = tail = NULL;  in paren_squish()
144 			tail = result = expr;  in paren_squish()
146 			tail->next = expr;  in paren_squish()
147 			tail = expr;  in paren_squish()
149 		tail->next = NULL;  in paren_squish()
163 	PLAN *tail;	/* pointer to tail of result plan */  in not_squish()  local
166 	tail = result = next = NULL;  in not_squish()
203 			tail = result = next;  in not_squish()
205 			tail->next = next;  in not_squish()
206 			tail = next;  in not_squish()
208 		tail->next = NULL;  in not_squish()
221 	PLAN *tail;	/* pointer to tail of result plan */  in or_squish()  local
224 	tail = result = next = NULL;  in or_squish()
255 			tail = result = next;  in or_squish()
257 			tail->next = next;  in or_squish()
258 			tail = next;  in or_squish()
260 		tail->next = NULL;  in or_squish()