Resolve #3432756 "Splitting the links"

CHANGELOG.md

@@ -13,6 +13,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 - fix tests on Drupal 10.2+ using HTML5 filter
+- fix issue #3432756: Splitting the links in two
 
 ### Removed
 - removed translation-files - Issue #3365383

js/ckeditor5_plugins/nbsp/src/nbspEditing.js

@@ -11,7 +11,9 @@ export default class NbspEditing extends Plugin {
     const schema = this.editor.model.schema;
     schema.register("nbsp", {
       allowWhere: "$text",
+      allowAttributesOf: "$text",
       isInline: true,
+      isObject: true,
     });
   }
 

tests/src/FunctionalJavascript/DrupalCKEditor5NbspTest.php

@@ -83,6 +83,7 @@ protected function setUp(): void {
       'toolbar' => [
         'items' => [
           'sourceEditing',
+          'link',
           'bold',
           'italic',
           'nbsp',
@@ -170,4 +171,32 @@ public function testButton() {
     $this->assertEquals(" ", $nbsp->firstChild->nodeValue);
   }
 
+  /**
+   * Tests using Drupal Nbsp button to add non-breaking space into Link.
+   */
+  public function testNbspInsideLinkTag() {
+    $this->drupalGet('node/add/page');
+    $this->waitForEditor();
+    $assert_session = $this->assertSession();
+    $assert_session->waitForElementVisible('css', '.ck-editor__editable', 1000);
+
+    // Emulate the user typing a link and adding an NBSP element inside.
+    $this->pressEditorButton('Source');
+    $source_text_area = $assert_session->waitForElement('css', '.ck-source-editing-area textarea');
+    $source_text_area->setValue('lorem ipsum <a href="https://www.google.ch">dolore<nbsp>&npbs;</nbsp>sit</a> amet.');
+
+    // Click source again to make source inactive and have the Schema refreshed.
+    $this->pressEditorButton('Source');
+
+    // The link should be left intact and we should have 1 NBSP element inside.
+    $xpath = new \DOMXPath($this->getEditorDataAsDom());
+    $nbsp = $xpath->query('//nbsp');
+    $this->assertCount(1, $nbsp);
+    $this->assertEquals(" ", $nbsp[0]->firstChild->nodeValue);
+
+    $link = $xpath->query('//a');
+    $this->assertCount(1, $link);
+    $this->assertEquals("dolore sit", $link[0]->textContent);
+  }
+
 }