Improve paste function of multiple lines (#1016)

Co-authored-by: Georgy Berezhnoy <gohabereg@gmail.com>

docs/CHANGELOG.md

@@ -13,6 +13,7 @@
 - `New` Block [lifecycle hook](tools.md#block-lifecycle-hooks) `moved`
 - `Deprecated` — [`blocks.swap(fromIndex, toIndex)`](api.md) method is deprecated. Use `blocks.move(toIndex, fromIndex)` instead.
 - `Fix` — Improve plain text paste [#1012](https://github.com/codex-team/editor.js/issues/1012)
+- `Fix` — Fix multiline paste [#1015](https://github.com/codex-team/editor.js/issues/1015)
 
 ### 2.16.1
 

src/components/modules/paste.ts

@@ -641,7 +641,11 @@ export default class Paste extends Module {
     if (BlockManager.currentBlock && BlockManager.currentBlock.currentInput) {
       const currentToolSanitizeConfig = Sanitizer.getInlineToolsConfig(BlockManager.currentBlock.name);
 
-      document.execCommand('insertHTML', false, Sanitizer.clean(content.innerHTML, currentToolSanitizeConfig));
+      document.execCommand(
+        'insertHTML',
+        false,
+        Sanitizer.clean(content.innerHTML, currentToolSanitizeConfig),
+      );
     } else {
       this.insertBlock(dataToInsert);
     }
@@ -765,10 +769,6 @@ export default class Paste extends Module {
         case Node.ELEMENT_NODE:
           const element = node as HTMLElement;
 
-          if (element.tagName === 'BR') {
-            return [...nodes, destNode, new DocumentFragment()];
-          }
-
           const {tool = ''} = this.toolsTags[element.tagName] || {};
           const toolTags = this.tagsByTool[tool] || [];
 

src/components/modules/sanitizer.ts

@@ -204,6 +204,12 @@ export default class Sanitizer extends Module {
       });
     }
 
+    /**
+     * Allow linebreaks
+     */
+    config['br'] = true;
+    config['wbr'] = true;
+
     return config;
   }