Test: internally generated quotes around node names containing math chars

V1 in+ 0 1.2
R1 in+ 1N 500
R2 1N R*C 500
C1 R*C 0 1u

.ic V(R*C)=0


.tran 1u 5m

.control
run
plot v(in+) v(R*C) v(in+)*V("R*C") 1.2*v(in+)*V(R*C) v(1N)
.endc

.end