// https://github.com/less/less.js/issues/3541
@import (reference) url(https://cdn.jsdelivr.net/npm/@less/test-data/less/_main/selectors.less);
@import (reference) url("https://cdn.jsdelivr.net/npm/@less/test-data/less/_main/scope.less");
@import (reference) url("https://cdn.jsdelivr.net/npm/@less/test-data/less/_main/empty.less?arg");

.test {
  color: @x;
}