resolve #46

src/parser.pegjs

@@ -85,15 +85,26 @@ block
 // block: quote
 
 quote
-	= lines:quoteLine+
+	= head:quoteMultiLine tails:quoteMultiLine+
 {
-	const children = applyParser(lines.join('\n'), 'fullParser');
+	const children = applyParser([head, ...tails].join('\n'), 'fullParser');
+	return QUOTE(children);
+}
+	/ line:quoteLine
+{
+	const children = applyParser(line, 'fullParser');
 	return QUOTE(children);
 }
 
+quoteMultiLine
+	= quoteLine / quoteEmptyLine
+
 quoteLine
 	= BEGIN ">" _? text:$(CHAR+) END { return text; }
 
+quoteEmptyLine
+	= BEGIN ">" _? END { return ''; }
+
 // block: search
 
 search

test/parser.ts

@@ -89,6 +89,26 @@ describe('FullParser', () => {
 			];
 			assert.deepStrictEqual(mfm.parse(input), output);
 		});
+		it('複数行の引用ブロックでは空行を含めることができる', () => {
+			const input = `
+> abc
+>
+> 123
+`;
+			const output = [
+				QUOTE([
+					TEXT('abc\n\n123')
+				])
+			];
+			assert.deepStrictEqual(mfm.parse(input), output);
+		});
+		it('1行の引用ブロックを空行にはできない', () => {
+			const input = `> `;
+			const output = [
+				TEXT('> ')
+			];
+			assert.deepStrictEqual(mfm.parse(input), output);
+		});
 	});
 
 	describe('search', () => {