fix: parse multiline quoted string corectly

decode_test.go

@@ -844,6 +844,14 @@ func TestDecoder(t *testing.T) {
 			"v: |\n  hello\n  ...\n  world\n",
 			map[string]string{"v": "hello\n...\nworld\n"},
 		},
+		{
+			"v: >\n  hello\n  ...\n  world\n",
+			map[string]string{"v": "hello ... world"},
+		},
+		{
+			"v: \"hello\\\n  ...\\\n  world\n\"",
+			map[string]string{"v": "hello...world "},
+		},
 		{
 			"a: !!binary gIGC\n",
 			map[string]string{"a": "\x80\x81\x82"},
@@ -2638,8 +2646,8 @@ func TestDecoder_LiteralWithNewLine(t *testing.T) {
 
 func TestDecoder_TabCharacterAtRight(t *testing.T) {
 	yml := `
-- a: [2 , 2] 			
-  b: [2 , 2] 			
+- a: [2 , 2]
+  b: [2 , 2]
   c: [2 , 2]`
 	var v []map[string][]int
 	if err := yaml.Unmarshal([]byte(yml), &v); err != nil {

scanner/scanner.go

@@ -306,6 +306,10 @@ func (s *Scanner) scanDoubleQuote(ctx *Context) (tk *token.Token, pos int) {
 		c := src[idx]
 		pos = idx + 1
 		ctx.addOriginBuf(c)
+		var nextChar rune
+		if idx+1 < size {
+			nextChar = src[idx+1]
+		}
 		if s.isNewLineChar(c) {
 			value = append(value, ' ')
 			isFirstLineChar = true
@@ -316,8 +320,14 @@ func (s *Scanner) scanDoubleQuote(ctx *Context) (tk *token.Token, pos int) {
 			continue
 		} else if c == '\\' {
 			isFirstLineChar = false
-			if idx+1 < size {
-				nextChar := src[idx+1]
+			if nextChar != 0 {
+				// we need to treat this as a newline immediately and ignore the \ character
+				if s.isNewLineChar(nextChar) {
+					isFirstLineChar = true
+					idx++
+					ctx.addOriginBuf(nextChar)
+					continue
+				}
 				switch nextChar {
 				case 'b':
 					ctx.addOriginBuf(nextChar)