Merge branch...

Merge branch '27254-clicking-line-anchor-multiple-times-causes-scroll-position-to-over-correct' into 'master'

Resolve "Clicking line anchor multiple times causes scroll position to over-correct"

Closes #27254

See merge request !8791

app/assets/javascripts/diff.js.es6

 /* eslint-disable class-methods-use-this */
 
+//= require lib/utils/url_utility */
+
 (() => {
   const UNFOLD_COUNT = 20;
 
@@ -104,11 +106,11 @@
     }
 
     highlighSelectedLine() {
+      const hash = gl.utils.getLocationHash();
       const $diffFiles = $('.diff-file');
       $diffFiles.find('.hll').removeClass('hll');
 
-      if (window.location.hash !== '') {
-        const hash = window.location.hash.replace('#', '');
+      if (hash) {
         $diffFiles
           .find(`tr#${hash}:not(.match) td, td#${hash}, td[data-line-code="${hash}"]`)
           .addClass('hll');

app/assets/javascripts/line_highlighter.js

@@ -74,8 +74,9 @@
       // If not done this way, the line number anchor will sometimes keep its
       // active state even when the event is cancelled, resulting in an ugly border
       // around the link and/or a persisted underline text decoration.
-      return $('#blob-content-holder').on('click', 'a[data-line-number]', function(event) {
-        return event.preventDefault();
+      $('#blob-content-holder').on('click', 'a[data-line-number]', function(event) {
+        event.preventDefault();
+        event.stopPropagation();
       });
     };