Haml中的注释

以前一直不知道怎么在Haml中注释掉一段代码。
结果官方文档上写得清清楚楚：

/

The forward slash character, when placed at the beginning of a line, wraps all text after it in an HTML comment. For example:

%peanutbutterjelly
 / This is the peanutbutterjelly element
 I like sandwiches!

is compiled to:

<peanutbutterjelly>
 <!-- This is the peanutbutterjelly element -->
 I like sandwiches!
</peanutbutterjelly>

The forward slash can also wrap indented sections of code. For example:

/
 %p This doesn't render...
 %div
   %h1 Because it's commented out!

is compiled to:

<!--
 <p>This doesn't render...</p>
 <div>
   <h1>Because it's commented out!</h1>
 </div>
-->

还是跟缩进相关。

至于反斜杠\(backslash)，当然是转义字符啦。

%title
 = @title
 \- MySite

is compiled to:

<title>
 MyPage
 - MySite
</title>

具体请参考官方文档：
The full Haml reference
The full Sass reference
The RDoc documentation