Add: Counter - Bookmark menu

src/tab/_counter.scss

@@ -1,63 +0,0 @@
-//-- Mixin ---------------------------------------------------------------------
-@mixin _tab_counter_without_centered() {
-  @include Option("userChrome.centered.tab") {
-    @include NotOption("userChrome.centered.tab.label") {
-      @content;
-    }
-  }
-  @include NotOption("userChrome.centered.tab") {
-    @content;
-  }
-}
-
-//------------------------------------------------------------------------------
-
-#tabbrowser-tabs {
-  counter-reset: tab-counts;
-}
-
-.tabbrowser-tab:not([hidden="true"]) {
-  counter-increment: tab-counts;
-
-  // https://www.designcise.com/web/tutorial/how-to-add-space-before-or-after-an-element-using-css-pseudo-elements
-  &[pinned="true"] .tab-label-container::before  {
-    content: "\00a0" counter(tab-counts);
-  }
-  &:not([pinned="true"]) .tab-label-container::before {
-    content: counter(tab-counts) ":\00a0";
-  }
-
-  .tab-label-container {
-    display: grid;
-
-    align-content: safe center;
-    align-items: safe center;
-
-    @include _tab_counter_without_centered {
-      justify-content: start;
-      justify-items: start;
-    }
-
-    &::before {
-      display: inline-block;
-      grid-row: 1;
-    }
-    > .tab-text {
-      grid-row: 1;
-    }
-
-    &[pinned] {
-      width: unset !important; /* Original: 0 */
-      > .tab-text,
-      > .tab-secondary-label {
-        width: 0;
-      }
-    }
-  }
-}
-
-// Like centered label
-.tab-label,
-.tab-secondary-label {
-  overflow: hidden;
-}

src/tab/_index.scss

@@ -39,8 +39,3 @@
 @include Option("userChrome.tab.crashed") {
   @import "crashed_tab";
 }
-
-/*= Counter for Tab ==========================================================*/
-@include Option("userChrome.tab.counter") {
-  @import "counter";
-}