parse-interpolation.less

@inputs: input[type=text], input[type=email], input[type=password], textarea;

@{inputs} {
  &:focus {
    foo: bar;
  }
} 

@classes: .a, .b, .c;

@{classes} {  
  + .z {
    color: blue; 
  }
}

.bar {
  .d@{classes}&:hover, baz {
    color: blue;
  }
}

@c: ~'.a, .b';
@d: ~'.c, .d';
@e: ~' + .e';

@{c}@{d} {
  @{e} {
    foo: bar;
  }
}

@textClasses: ~'&[class="text"], &.text';

input {
  @{textClasses} {
    background: red;
  }
}

@my-selector: ~'.selector-1, .selector-2';
.master-page-1 {
    @{my-selector} {
        background-color: red;
    }
}

@list: apple, satsuma, banana, pear;
@{list} {
  .fruit-& {
    content: "Just a test.";
  }
}