Invoke: task name with underscore doesn't work properly

[olexandr-klymenko]

Say we have a task

@task
def store_configs(_, host='consul', port=8500, conf_yml='consuled_conf.yml'):
    c = Consul(host, port)
    conf = yaml.load(open(conf_yml))
    for k, v in conf['configs'].items():
        c.kv[conf['prefix'] + '/' + k] = v

if I run invoke store_configs, the following error shows up:

No idea what 'store_configs' is!

in order to invoke it I must do following:

invoke store-configs

Which isn't obvious. I think there are two option:

1. Fix it so that we cat run command with underscore which is preferable
2. Create explisit note in documentation

[olexandr-klymenko]

BTW, it used to work in prevous versions

[tuukkamustonen]

The behavior was intentionally changed (I think in 0.20.0). Can't comment on reasoning. Anyway, if you want to restore the original behavior, there is auto_dash_names flag that you can disable. For example in ~/.invoke.yaml:

tasks:
    auto_dash_names: false

Be sure to use 0.20.2+ for there was a bug regarding this option (https://github.com/pyinvoke/invoke/issues/465).