Fix hash parameter of Permalink and Blame buttons

This commit fixes the logic that updates the href of the Permalink and
Blame buttons so that the href is updated regardless of what element
within the line number link is clicked.

app/assets/javascripts/pages/projects/init_blob.js

@@ -11,7 +11,7 @@ export default () => {
   // eslint-disable-next-line no-new
   new BlobLinePermalinkUpdater(
     document.querySelector('#blob-content-holder'),
-    '.diff-line-num[data-line-number]',
+    '.diff-line-num[data-line-number], .diff-line-num[data-line-number] *',
     document.querySelectorAll('.js-data-file-blob-permalink-url, .js-blob-blame-link'),
   );
 

changelogs/unreleased/nfriend-31374-fix-permalink-button.yml

+---
+title: Fix hash parameter of Permalink and Blame button
+merge_request: 23713
+author:
+type: fixed

spec/features/projects/blobs/blob_line_permalink_updater_spec.rb

@@ -44,6 +44,17 @@ describe 'Blob button line permalinks (BlobLinePermalinkUpdater)', :js do
         expect(find('.js-data-file-blob-permalink-url')['href']).to eq(get_absolute_url(project_blob_path(project, tree_join(sha, path), anchor: ending_fragment)))
       end
 
+      it 'changes fragment hash if icon inside line number link is clicked' do
+        ending_fragment = "L7"
+
+        visit_blob
+
+        find("##{ending_fragment}").hover
+        find("##{ending_fragment} i").click
+
+        expect(find('.js-data-file-blob-permalink-url')['href']).to eq(get_absolute_url(project_blob_path(project, tree_join(sha, path), anchor: ending_fragment)))
+      end
+
       it 'with initial fragment hash, changes fragment hash if line number clicked' do
         fragment = "L1"
         ending_fragment = "L5"
@@ -83,6 +94,17 @@ describe 'Blob button line permalinks (BlobLinePermalinkUpdater)', :js do
         expect(find('.js-blob-blame-link')['href']).to eq(get_absolute_url(project_blame_path(project, tree_join('master', path), anchor: ending_fragment)))
       end
 
+      it 'changes fragment hash if icon inside line number link is clicked' do
+        ending_fragment = "L7"
+
+        visit_blob
+
+        find("##{ending_fragment}").hover
+        find("##{ending_fragment} i").click
+
+        expect(find('.js-blob-blame-link')['href']).to eq(get_absolute_url(project_blame_path(project, tree_join('master', path), anchor: ending_fragment)))
+      end
+
       it 'with initial fragment hash, changes fragment hash if line number clicked' do
         fragment = "L1"
         ending_fragment = "L5"