strip 去除字符串前后空格

去掉字符串开头和结尾的所有空白字符(包括制表符、空格和换行符),但不会影响词与词之间的空格。

输入

{{ "          How amazing is JekyllDo? Liquid and Jekyll will tell you!          " | strip }}!

输出

How amazing is JekyllDo? Liquid and Jekyll will tell you!!