Access the parent selector from within a SASS mixin

Question

I have set up a mixin for a button using display:inline-block. I am trying to get to the parent of whatever class that will eventually end up using the mixim, so I can add the font-size: 0px line there to make sure that I don't need to make adjustments to my HTML to avoid unwanted space between each button.

Here's an example... I want the. parent class to receive the font-size: 0px line.

@mixin button() {
    display:inline-block;
    font-size: 1em;
    //other stuff to make a pretty button
    && { font-size: 0px; }
}

.parent{
    .child {
        @include button();
    }
}

Answer 1

No, this is not possible. You could do something like this, though:

@mixin button($child: '.child') {
    font-size: 0px;
    //other stuff to make a pretty button

    #{$child} {
        display:inline-block;
        font-size: 1em;
    }
}

.parent{
    @include button();
}

Output:

.parent {
  font-size: 0px;
}
.parent .child {
  display: inline-block;
  font-size: 1em;
}