readline-listener: experiment with has-readline?
readline-listener: experiment with has-readline?

if we can detect readline is available then we could use this as
a default listener in the future

tgunr/factor,mrjbq7/factor,factor/factor,tgunr/factor,factor/factor,mrjbq7/factor,factor/factor,mrjbq7/factor,mrjbq7/factor,tgunr/factor,mrjbq7/factor,tgunr/factor,factor/factor,factor/factor,factor/factor,tgunr/factor,mrjbq7/factor,tgunr/factor