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diff --git a/debian/missing-sources/bourbon-neat/app/assets/stylesheets/grid/_omega.scss b/debian/missing-sources/bourbon-neat/app/assets/stylesheets/grid/_omega.scss
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+@charset "UTF-8";
+
+/// Removes the element's gutter margin, regardless of its position in the grid hierarchy or display property. It can target a specific element, or every `nth-child` occurrence. Works only with `block` layouts.
+///
+/// @param {List} $query [block]
+///   List of arguments. Supported arguments are `nth-child` selectors (targets a specific pseudo element) and `auto` (targets `last-child`).
+///
+///   When passed an `nth-child` argument of type `*n` with `block` display, the omega mixin automatically adds a clear to the `*n+1` th element. Note that composite arguments such as `2n+1` do not support this feature.
+///
+///   **Deprecation warning**: The omega mixin will no longer take a `$direction` argument. To change the layout direction, use `row($direction)` or set `$default-layout-direction` instead.
+///
+/// @example scss - Usage
+///   .element {
+///     @include omega;
+///   }
+///
+///   .nth-element {
+///     @include omega(4n);
+///   }
+///
+/// @example css - CSS Output
+///   .element {
+///     margin-right: 0;
+///   }
+///
+///   .nth-element:nth-child(4n) {
+///     margin-right: 0;
+///   }
+///
+///   .nth-element:nth-child(4n+1) {
+///     clear: left;
+///   }
+
+@mixin omega($query: block, $direction: default) {
+  $table: belongs-to(table, $query);
+  $auto: belongs-to(auto, $query);
+
+  @if $direction != default {
+    @include -neat-warn("The omega mixin will no longer take a $direction argument. To change the layout direction, use the direction(){...} mixin.");
+  } @else {
+    $direction: get-direction($layout-direction, $default-layout-direction);
+  }
+
+  @if $table {
+    @include -neat-warn("The omega mixin no longer removes padding in table layouts.");
+  }
+
+  @if length($query) == 1 {
+    @if $auto {
+      &:last-child {
+        margin-#{$direction}: 0;
+      }
+    }
+
+    @else if contains-display-value($query) and $table == false {
+      margin-#{$direction}: 0;
+    }
+
+    @else {
+      @include nth-child($query, $direction);
+    }
+  } @else if length($query) == 2 {
+    @if $auto {
+      &:last-child {
+        margin-#{$direction}: 0;
+      }
+    } @else {
+      @include nth-child(nth($query, 1), $direction);
+    }
+  } @else {
+    @include -neat-warn("Too many arguments passed to the omega() mixin.");
+  }
+}
+
+@mixin nth-child($query, $direction) {
+  $opposite-direction: get-opposite-direction($direction);
+
+  &:nth-child(#{$query}) {
+    margin-#{$direction}: 0;
+  }
+
+  @if type-of($query) == string {
+    $query: str-replace($query, " ", "");
+    $operator: false;
+
+    @if str_index($query, "+") {
+      $operator: "+";
+    } @else if str_index($query, "-") {
+      $operator: "-";
+    }
+
+    @if $operator {
+      $operator-index: str_index($query, $operator);
+      $first: str-slice($query, 0, ($operator-index - 1));
+      $last: to-number(str-slice($query, ($operator-index + 1), -1));
+      @if $operator == "+" {
+        $last: $last + 1;
+      } @else if $operator == "-" {
+        $last: $last - 1;
+      }
+      $nth: "#{$first}#{$operator}#{$last}";
+
+      &:nth-child(#{$nth}) {
+        clear: $opposite-direction;
+      }
+    }
+  } @else if type-of($query) == number and unit($query) == "n" {
+    &:nth-child(#{$query}+1) {
+      clear: $opposite-direction;
+    }
+  }
+}