From a4597c1e11d468aff272bc5aebaa6dedc1eb0a4a Mon Sep 17 00:00:00 2001
From: seonim-ryu <seonim.ryu@nhn.com>
Date: Tue, 26 Nov 2019 12:48:24 -0800
Subject: [PATCH] fix: preserve newlines in code block when pasting (fix #693)

---
 src/js/wwClipboardManager.js         |  3 ++-
 test/unit/wwClipboardManager.spec.js | 18 ++++++++++++++++++
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/src/js/wwClipboardManager.js b/src/js/wwClipboardManager.js
index fc96231984..754447ef6e 100644
--- a/src/js/wwClipboardManager.js
+++ b/src/js/wwClipboardManager.js
@@ -120,7 +120,8 @@ class WwClipboardManager {
     const textNodes = domUtils.getAllTextNode(node);
 
     textNodes.forEach((textNode) => {
-      if (/\n/.test(textNode.nodeValue)) {
+      if (domUtils.getNodeName(textNode.parentNode) === 'SPAN' &&
+        /\n/.test(textNode.nodeValue)) {
         textNode.parentNode.innerHTML = textNode.nodeValue.replace(/\n/g, '<br>');
       }
     });
diff --git a/test/unit/wwClipboardManager.spec.js b/test/unit/wwClipboardManager.spec.js
index abb84b9f5d..d02c5a5ba1 100644
--- a/test/unit/wwClipboardManager.spec.js
+++ b/test/unit/wwClipboardManager.spec.js
@@ -108,5 +108,23 @@ describe('WwClipboardManager', () => {
       expect(range.startContainer.nodeType === Node.TEXT_NODE).toBe(true);
       expect(range.endContainer.nodeType === Node.TEXT_NODE).toBe(true);
     });
+  
+    describe('_replaceNewLineToBr', () => {
+      it('replace newlines to br in plain text only', () => {
+        const node = $('<span>foo\nbar</span>')[0];
+        
+        cbm._replaceNewLineToBr(node);
+
+        expect(node.innerHTML).toBe('foo<br>bar');
+      });
+
+      it('preserve newlines in code block', () => {
+        const node = $('<pre>foo\nbar</pre>')[0];
+
+        cbm._replaceNewLineToBr(node);
+
+        expect(node.innerHTML).toBe('foo\nbar');
+      });
+    });
   });
 });