/* eslint-disable func-names, space-before-function-paren, wrap-iife, no-var, no-unused-expressions, no-param-reassign, no-else-return, quotes, object-shorthand, comma-dangle, camelcase, one-var, vars-on-top, one-var-declaration-per-line, no-return-assign, consistent-return, padded-blocks, max-len, prefer-template */
(function() {
  (function(w) {
    var base;
    w.gl || (w.gl = {});
    (base = w.gl).utils || (base.utils = {});
    w.gl.utils.isInGroupsPage = function() {
      return gl.utils.getPagePath() === 'groups';
    };
    w.gl.utils.isInProjectPage = function() {
      return gl.utils.getPagePath() === 'projects';
    };
    w.gl.utils.getProjectSlug = function() {
      if (this.isInProjectPage()) {
        return $('body').data('project');
      } else {
        return null;
      }
    };
    w.gl.utils.getGroupSlug = function() {
      if (this.isInGroupsPage()) {
        return $('body').data('group');
      } else {
        return null;
      }
    };

    w.gl.utils.ajaxGet = function(url) {
      return $.ajax({
        type: "GET",
        url: url,
        dataType: "script"
      });
    };

    w.gl.utils.extractLast = function(term) {
      return this.split(term).pop();
    };

    w.gl.utils.rstrip = function rstrip(val) {
      if (val) {
        return val.replace(/\s+$/, '');
      } else {
        return val;
      }
    };

    w.gl.utils.disableButtonIfEmptyField = function(field_selector, button_selector, event_name) {
      event_name = event_name || 'input';
      var closest_submit, field, that;
      that = this;
      field = $(field_selector);
      closest_submit = field.closest('form').find(button_selector);
      if (this.rstrip(field.val()) === "") {
        closest_submit.disable();
      }
      return field.on(event_name, function() {
        if (that.rstrip($(this).val()) === "") {
          return closest_submit.disable();
        } else {
          return closest_submit.enable();
        }
      });
    };

    // automatically adjust scroll position for hash urls taking the height of the navbar into account
    // https://github.com/twitter/bootstrap/issues/1768
    w.gl.utils.handleLocationHash = function() {
      var hash = w.gl.utils.getLocationHash();
      if (!hash) return;

      var navbar = document.querySelector('.navbar-gitlab');
      var subnav = document.querySelector('.layout-nav');
      var fixedTabs = document.querySelector('.js-tabs-affix');

      var adjustment = 0;
      if (navbar) adjustment -= navbar.offsetHeight;
      if (subnav) adjustment -= subnav.offsetHeight;

      // scroll to user-generated markdown anchor if we cannot find a match
      if (document.getElementById(hash) === null) {
        var target = document.getElementById('user-content-' + hash);
        if (target && target.scrollIntoView) {
          target.scrollIntoView(true);
          window.scrollBy(0, adjustment);
        }
      } else {
        // only adjust for fixedTabs when not targeting user-generated content
        if (fixedTabs) {
          adjustment -= fixedTabs.offsetHeight;
        }
        window.scrollBy(0, adjustment);
      }
    };

    gl.utils.getPagePath = function() {
      return $('body').data('page').split(':')[0];
    };

    gl.utils.parseUrl = function (url) {
      var parser = document.createElement('a');
      parser.href = url;
      return parser;
    };

    gl.utils.parseUrlPathname = function (url) {
      var parsedUrl = gl.utils.parseUrl(url);
      // parsedUrl.pathname will return an absolute path for Firefox and a relative path for IE11
      // We have to make sure we always have an absolute path.
      return parsedUrl.pathname.charAt(0) === '/' ? parsedUrl.pathname : '/' + parsedUrl.pathname;
    };

    gl.utils.isMetaKey = function(e) {
      return e.metaKey || e.ctrlKey || e.altKey || e.shiftKey;
    };

  })(window);

}).call(this);

@@ -3144,32 +3144,416 @@
       %7D%0A    %7D;%0A%0A
+    // Check if element scrolled into viewport from above or below%0A    // Courtesy http://stackoverflow.com/a/7557433/414749%0A    w.gl.utils.isInViewport = function(el) %7B%0A      var rect = el.getBoundingClientRect();%0A%0A      return (%0A        rect.top %3E= 0 &&%0A        rect.left %3E= 0 &&%0A        rect.bottom %3C= window.innerHeight &&%0A        rect.right %3C= window.innerWidth%0A      );%0A    %7D;%0A%0A
     gl.utils.get

Add `isInViewport`