去除(多余空格)
用一个空格或一个给定字符替换所有重复空格,换行和制表符.
例子:
articleTitle:Grandmother of\neight makes\t hole in one.
模板:

_{$articleTitle}_
_{$articleTitle|strip}_
_{$articleTitle|strip:" "}_

输出:

Grandmother of
eight makes hole in one.
Grandmother of eight makes hole in one.
Grandmother of eight makes hole in one.