In SVG diagrams, classical bits look identical to quantum bits

[Strilanc]

import cirq
from cirq.contrib.svg import SVGCircuit

with open('tmp.svg', 'w') as f:
    print(SVGCircuit(cirq.Circuit(
        cirq.measure(cirq.LineQubit(0), key="abc"),
        cirq.X(cirq.LineQubit(0)).with_classical_controls("abc"),
    ))._repr_svg_(), file=f)