Expose fake home dir usage with a cucumber tag

features/ssh/config.feature

@@ -12,6 +12,7 @@ Feature: SSH settings
     When I successfully execute the recipe
     Then the output must contain my current login name
 
+  @fake_home
   Scenario: uses configured SSH user name for a given host
     Given an SSH config with:
       """

features/steps/ssh_steps.rb

@@ -1,6 +1,3 @@
-# FIXME: current home directory shouldn't be changed here, maybe we should use
-# a tag for features needing a fake home directory.
 Given /^an SSH config with:$/ do |config|
-  ENV['HOME'] = File.expand_path(current_dir)
   write_file '.ssh/config', config
 end

features/support/env_fake_home.rb

@@ -0,0 +1,3 @@
+Before('@fake_home') do
+  ENV['HOME'] = File.expand_path(current_dir)
+end