LearnBoost/stylus — pull request #1131 by saschagehlich (2013-09-03 18:53:18+00:00)
Title: Feature/mixin blocks

This pull request adds a feature that has been requested by many users (#608 #1067 #1073).

Function calls can now take blocks if they have a `~` after their closing bracket, like this:

```sass
mobile()~
width: 10em
```

The given content can then be yielded by using `@content`, like this:

```sass
mobile()
@media screen and (min-width: 30em)
@content
```

I think you can see where this is going - this is an important feature for responsible websites.

I'm not quite sure about the syntax, maybe we should switch over to defining functions with a leading "=" and calling them with a leading "+" (like SASS does), this would make it easier to tell definitions and calls apart.