这只是一个概念证明：
但我在第10行遇到了lexing错误
功能文件：
Feature: Attitude Matter
In order to know Attitude
As a working guy
I want to know whom to greet
@tester
Scenario: Employee and his attitude
Given I work day-shifts <<<<<<<10th line
When I meet newspaperman
Then I greet paperman
Given I work latenights
When I meet watchman
Then I greet watchman