Generated by SassMeister.com.

SassMeister-input.scss

// ----
// libsass (v3.2.4)
// ----

$list: (geckotang mamilline6 no_1026);
@each $item in $list {
  .avatar--#{$item} {
    background-image: url('path/to/icon-#{$item}.jpg');
  }
}

SassMeister-output.css

.avatar--geckotang {
  background-image: url("path/to/icon-geckotang.jpg");
}

.avatar--mamilline6 {
  background-image: url("path/to/icon-mamilline6.jpg");
}

.avatar--no_1026 {
  background-image: url("path/to/icon-no_1026.jpg");
}