Review edit

Author: theletterf

src/Elastic.Markdown/Myst/Renderers/LlmMarkdown/LlmBlockRenderers.cs

@@ -431,11 +431,9 @@ private static void WriteDiagramBlock(LlmMarkdownRenderer renderer, DiagramBlock
 		// Render the diagram content with indentation
 		if (!string.IsNullOrWhiteSpace(diagramBlock.Content))
 		{
-			var lines = diagramBlock.Content.Split(['\n', '\r'], StringSplitOptions.RemoveEmptyEntries);
-			foreach (var line in lines)
-			{
-				renderer.WriteLine(line);
-			}
+			var reader = new StringReader(diagramBlock.Content);
+			while (reader.ReadLine() is { } line)
+				renderer.WriteLine(string.IsNullOrWhiteSpace(line) ? string.Empty : "  " + line);
 		}
 
 		renderer.WriteLine("</diagram>");

tests/authoring/LlmMarkdown/LlmMarkdownOutput.fs

@@ -510,16 +510,16 @@ y -> z: nice to meet you
     let ``renders diagram with type information`` () =
         markdown |> convertsToNewLLM """
 <diagram type="mermaid">
-flowchart LR
-    A[Start] --> B{Decision}
-    B -->|Yes| C[Action 1]
-    B -->|No| D[Action 2]
-    C --> E[End]
-    D --> E
+  flowchart LR
+      A[Start] --> B{Decision}
+      B -->|Yes| C[Action 1]
+      B -->|No| D[Action 2]
+      C --> E[End]
+      D --> E
 </diagram>
 
 <diagram type="d2">
-x -> y: hello world
-y -> z: nice to meet you
+  x -> y: hello world
+  y -> z: nice to meet you
 </diagram>
 """