ok, let's say:

Then /should see "(.+)"/ do |text|
   # a binary step, easily negable
end

Then /I deny some steps/ do
  # really not so readable
  Not Then "should see \"your are not log in\""

  Then "some other step that holds"

  # another way of saying it bad
  But Not Then "should receive info for non users"

  # or maybe this bad
  And Not Then "should receive info for non users"
end

now comes the mars attack part, I haven't dig into cucumber or rspec code
that much, only guessing here.
and Not could do something like receiving the step that comes behind the
keyword

def Not(step)
    # we tell the step to assert (I mean the rspec synonym) itself
    # so that it raises some RSpec exception
    step.assert!
    # the step really passed, we should raise an Exception not rescueable
for the next rescue
    raise Spec::UncatchableException
    rescue Spec::Expectations # or something like that
        # green, nothing, this is what we expected
    end
end

is this doable? I have to say I have not come to need this that bad to ask
the cucumber to provide it

is really late and this cross my mind :-)

joaquin
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