From cd06afd886c548b7b85ca2a6e62c0dbff26de1ee Mon Sep 17 00:00:00 2001
From: "wh05.park" <wh05.park@samsung.com>
Date: Thu, 18 Jun 2020 12:37:43 +0900
Subject: [PATCH] fix(compiler/parser/html-parser.js): Line breaks in textareas
 are not removed.(fix: #11446)

---
 src/compiler/parser/html-parser.js        | 2 +-
 test/unit/modules/compiler/parser.spec.js | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/compiler/parser/html-parser.js b/src/compiler/parser/html-parser.js
index dbc59146331..6bcc3a04dbf 100644
--- a/src/compiler/parser/html-parser.js
+++ b/src/compiler/parser/html-parser.js
@@ -44,7 +44,7 @@ const encodedAttrWithNewLines = /&(?:lt|gt|quot|amp|#39|#10|#9);/g
 
 // #5992
 const isIgnoreNewlineTag = makeMap('pre,textarea', true)
-const shouldIgnoreFirstNewline = (tag, html) => tag && isIgnoreNewlineTag(tag) && html[0] === '\n'
+const shouldIgnoreFirstNewline = (tag, html) => tag && isIgnoreNewlineTag(tag) && html[0] === '\n' && html[1] && html[1] !== '\n'
 
 function decodeAttr (value, shouldDecodeNewlines) {
   const re = shouldDecodeNewlines ? encodedAttrWithNewLines : encodedAttr
diff --git a/test/unit/modules/compiler/parser.spec.js b/test/unit/modules/compiler/parser.spec.js
index d6521bbf625..e9999cbd7b5 100644
--- a/test/unit/modules/compiler/parser.spec.js
+++ b/test/unit/modules/compiler/parser.spec.js
@@ -698,7 +698,7 @@ describe('parser', () => {
     expect(text.text).toBe('\ndef')
     const pre2 = ast.children[2]
     expect(pre2.children[0].type).toBe(3)
-    expect(pre2.children[0].text).toBe('\nabc')
+    expect(pre2.children[0].text).toBe('\n\nabc')
   })
 
   it('keep first newline after unary tag in <pre>', () => {
@@ -870,7 +870,7 @@ describe('parser', () => {
     expect(text.text).toBe(' def')
     const pre2 = ast.children[2]
     expect(pre2.children[0].type).toBe(3)
-    expect(pre2.children[0].text).toBe('\nabc')
+    expect(pre2.children[0].text).toBe('\n\nabc')
   })
 
   it(`keep first newline after unary tag in <pre> with whitespace: 'condense'`, () => {