Generated by SassMeister.com.

SassMeister-input.scss

// ----
// Sass (v3.4.3)
// Compass (v1.0.1)
// ----

// Function needed for the mixin
// Thanks Hugo! http://hugogiraudel.com/2013/08/08/advanced-sass-list-functions
@function remove-list-items($list, $value) {
    $result: ();

    @for $i from 1 through length($list) {
        @if type-of(nth($list, $i)) == list {
            $result: append($result, remove-list-items(nth($list, $i), $value));
        }
        @else if nth($list, $i) != $value {
            $result: append($result, nth($list, $i));
        }
    }

    @return $result;
}


// Mixin
@mixin am($args) {
    @if length($args) == 1 {
        [am-#{$args}] {
            @content;
        }
    }
    @else {
        $attr: nth($args, 1);
        $val: remove-list-items($args, nth($args, 1));
        [am-#{$attr}~="#{$val}"] {
            @content;
        }
    }
}


// Usage
@include am(button) {
    content: "";
}

@include am(button large) {
    content: "";
}

@include am(button large rounded) {
    content: "";
}

@include am(row) {
    content: "";
}

@include am(column) {
    content: "";
}

@include am(column "1/12") {
    content: "";
}

SassMeister-output.css

[am-button] {
  content: "";
}

[am-button~="large"] {
  content: "";
}

[am-button~="large rounded"] {
  content: "";
}

[am-row] {
  content: "";
}

[am-column] {
  content: "";
}

[am-column~="1/12"] {
  content: "";
}