Write HTML block in lines to make use of prefix

commonmark/src/main/java/org/commonmark/renderer/markdown/CoreMarkdownNodeRenderer.java

@@ -259,7 +259,14 @@ public class CoreMarkdownNodeRenderer extends AbstractVisitor implements NodeRen
 
     @Override
     public void visit(HtmlBlock htmlBlock) {
-        writer.write(htmlBlock.getLiteral());
+        List<String> lines = getLines(htmlBlock.getLiteral());
+        for (int i = 0; i < lines.size(); i++) {
+            String line = lines.get(i);
+            writer.write(line);
+            if (i != lines.size() - 1) {
+                writer.line();
+            }
+        }
         writer.block();
     }
 

commonmark/src/test/java/org/commonmark/renderer/markdown/MarkdownRendererTest.java

@@ -53,6 +53,7 @@ public class MarkdownRendererTest {
     @Test
     public void testHtmlBlocks() {
         assertRoundTrip("<div>test</div>\n");
+        assertRoundTrip("> <div>\n> test\n> </div>\n");
     }
 
     @Test

commonmark/src/test/java/org/commonmark/renderer/markdown/SpecMarkdownRendererTest.java

@@ -62,7 +62,7 @@ public class SpecMarkdownRendererTest {
             System.out.println();
         }
 
-        int expectedPassed = 629;
+        int expectedPassed = 630;
         assertTrue("Expected at least " + expectedPassed + " examples to pass but was " + passes.size(), passes.size() >= expectedPassed);
     }