    # File lib/chef/cookbook/syntax_check.rb, line 122
          def validate_ruby_file(ruby_file)
            Chef::Log.debug("Testing #{ruby_file} for syntax errors...")
            result = shell_out("ruby -c #{ruby_file}")
            result.error!
            true
          rescue Chef::Exceptions::ShellCommandFailed
            file_relative_path = ruby_file[/^#{Regexp.escape(cookbook_path+File::Separator)}(.*)/, 1]
            Chef::Log.fatal("Cookbook file #{file_relative_path} has a ruby syntax error:")
            result.stderr.each_line { |l| Chef::Log.fatal(l.chomp) }
            false
          end