Empty subcircuits outputs equal to zero

[denizzzka]

For ease of circuit debugging, I made such stub subcircuit and figured out what it doesn't works as expected without additional zero resistors.

It was too hard to understand what goes wrong!

[ra3xdh]

It is not a bug. The short circuit between the subcircuit ports is not allowed in the Ngspice netlist syntax. You have to add zero-Ohm resistors to obtain short circuit. Open subcircuit ports are in principle allowed.

[denizzzka]

It is possible to detect this state and display warning?