Parsing selectors out of strings...

SassMeister-input.scss

// ----
// Sass (v4.0.0.alpha.1)
// ----

/*
SKETCHES FOR SELECTOR MANIPULATION

mixins

@mixin adjacent-to()
@mixin sibling-of/to()
@mixin child-of()



*/

.parent1, .parent2 {
  
  .child {
    // last: last-parents();
    // init: init-parents();
    // @include adjacent-to('p') { color: blue; }
    // @include sibling-of('input[checked]') {}
    // // HANDLE: SSV, CSV, STRING SELECTOR
    // @include child-of('.parent2.active, .parent1.active') {      
    // }
    /* how to parse selectors out of strings a la jQuery */
    $arg: '.parent3, .parent1 .parent2.hype';
    // $__parent: & !global;
    @at-root #{$arg} { $__parent: & !global; }
    debug: inspect($__parent);
  }
}

SassMeister-output.css

/*
SKETCHES FOR SELECTOR MANIPULATION

mixins

@mixin adjacent-to()
@mixin sibling-of/to()
@mixin child-of()



*/
.parent1 .child, .parent2 .child {
  /* how to parse selectors out of strings a la jQuery */
  debug: .parent3, .parent1 .parent2.hype;
}