Text over Subcircuit boundary test

V1 i1 0 0
V2 i2 0 0

X1  i1 i2 in1 in2 subtest infile="my-source.txt"

.subckt subtest ir1 ir2 in1 in2 r1val=1k infile="whatever" r2val=2k
R1 ir1 in1 'r1val'
R2 ir2 in2 'r2val'
afs %vd([in1 0 in2 0]) filesrc
.model filesrc filesource (file=infile amploffset=[0 0] amplscale=[1 1]
+ timeoffset=0 timescale=1
+ timerelative=false amplstep=false)
.ends

.control
tran 0.1u 100u
plot i(V1) i(V2)
.endc

.end