Nunjucks: support `&&` and ` || ` ?

[atian25]

{% if list && list.length>0 %} and {{ someVal || "test"}}

[ricordisamoa]

https://github.com/mozilla/nunjucks/issues/344#issuecomment-70645452

We do aim to have as close API/syntax to jinja as much as possible, so adding && || !, although familiar to javascript, would potentially polute and confuse, having multiple ways of doing the same thing.

[carljm]

Agreed, we don't need redundant syntax for things that already exist.

[LeeKowalkowski]

The documentation for if (https://mozilla.github.io/nunjucks/templating.html#if) says "It behaves exactly as javascript's if behaves".

[ghostcode]

// And Snippet
{% if (VARIABLE > 10) and (VARIABLE < 20) %}
    // 
{% endif %}

// Or Snippet
{% if (VARIABLE == 10) or (VARIABLE == 20) %}
    //
{% endif %}

[kangzj]

The documentation for if (https://mozilla.github.io/nunjucks/templating.html#if) says "It behaves exactly as javascript's if behaves".

I was mislead by the document as well.