and logical and ck_null |
or logical or ck_null |
-xor logical xor ck_null fs| S S
+xor logical xor ck_null fs2 S S
cond_expr conditional expression ck_null d|
andassign logical and assignment ck_null s|
orassign logical or assignment ck_null s|
# I/O.
-open open ck_fun ist@ F S?
+open open ck_fun ist@ F S? S?
close close ck_fun is% F?
pipe_op pipe ck_fun is@ F F