Cucumber - How configure it to use "--format pretty" as default?

I'm starting learning rails, and having some troubles on configure cucumber to run my bdd tests. What I want is run

cucumber features

and this translate to

cucumber features --format pretty

I tried to do this editing the config/cucumber.yml file (on a rails project). Edited the line:

default: <%= std_opts %> features

resulting on:

default开发者_JS百科: <%= std_opts %> --format pretty features

But it make some erros happen:

Using the default profile... All but one formatter must use --out, only one can print to each stream (or STDOUT) (RuntimeError)

What I can do to make this option "--format pretty" default? Also, is there any other good option to put as default to make result more clear?

Thank you.

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I found that this message:

Using the default profile... All but one formatter must use --out, only one can print to each stream (or STDOUT) (RuntimeError)

is related to a cucumber bug, like posted on this site

My workaround was edit config/cucumber.yml and left it like this:

std_opts = "--format rerun --out rerun.txt --strict --tags ~@wip"

%>

.....

default: <%= std_opts %> -f pretty features

Now it worked. I think this is cloudy for me, and maybe some more comments on this (and maybe another) 'bug' would be nice. Also, another useful settings would be nice.

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default: <%= run_with_these_tags %> -f pretty -f json -o json_report/report.json