在node.js的Swig模板中使用括号bug

Question

因为似乎swig模板is not able to do some basic stuff，例如在if语句中括号内有两个条件，我想知道你们如何处理这个问题而不必重复代码：

{% if( absence.approved and absence.rejected) or (demo.demo and demo.test) %} 
      whatever
{% endif %}

现在因为Swig doesn't support it ...

而打破了视图

Answer 1

删除括号，它应该可以正常工作

{% if absence.approved and absence.rejected or demo.demo and demo.test %} 

whatever

{% endif %}

Answer 2

如果你修正了第一个括号的位置，则工作正常：

> var swig = require('swig')
> swig.render('{% if( foo and bar) or (baz and bop) %}yep{% endif %}');
Error: Unexpected tag "if( foo and bar) or (baz and bop)" on line 1.
> swig.render('{% if (foo and bar) or (baz and bop) %}yep{% endif %}');
''
>