Should this work in Sass 3.4.12?

//list of icon names stored in a variable
$icon-names: (strategy '\e002') (twitter '\e003') (github '\e004');

//use interpolation syntax to loop through the list,
//a variable in singular to loop through the plural variable 

@each $icon-name in $icon-names {
  //pull each value from icon names to be a class selector
 .icon-#{nth($icon-name, 1)}:after {
      content: nth($icon-name, 2);  //works in libsass 3.1.0 and 
                                    //sass 3.3.14 but NOT 3.4.12

 } 
}

@charset "UTF-8";
.icon-strategy:after {
  content: "";
}

.icon-twitter:after {
  content: "";
}

.icon-github:after {
  content: "";
}