warn_truism.nit:18,4--12: Warning: useless comparison to a Bool literal.
warn_truism.nit:19,9--18: Warning: useless comparison to a Bool literal.
warn_truism.nit:20,10--26: Warning: useless comparison to a Bool literal.
warn_truism.nit:20,33--41: Warning: useless comparison to a Bool literal.