• 2015-11-21
• 今早发现gitbook发了一封信件，提醒我文章更新出错，前去查看，错误提示如下：
• Template render error: (/tmp/book/2nDev/w4ex0.md) [Line 85, Column 43] unexpected token: }} (In file '2nDev/w4ex0.md')
• 根据这一关键词google
• 进入下面页面：https://github.com/GitbookIO/gitbook/issues/637
• 原来{{ 和 }} 被gitbook的模板系统征用，为了要体现双大括号，必须在括号前加 {% raw %}，在括号后加{% endraw %}
• 见说明：The latest version is 2.0.0-beta.5, {{ and }} are used by the templating engine (http://help.gitbook.com/format/templating.html), with the latest versions we are escaping code blocks.
• You can also use: {% raw %}{{ and }} {% endraw %} to escape these templating controls.