feat: add format_chat_markdown method to EditorEditBlockCoder

aider/coders/editor_editblock_coder.py

@@ -5,3 +5,27 @@ from .editor_editblock_prompts import EditorEditBlockPrompts
 class EditorEditBlockCoder(EditBlockCoder):
     edit_format = "editor-diff"
     gpt_prompts = EditorEditBlockPrompts()
+
+    def format_chat_markdown(self):
+        chunks = self.format_chat_chunks()
+        
+        markdown = ""
+        
+        # Only include specified chunks in order
+        for messages in [chunks.repo, chunks.readonly_files, chunks.chat_files, chunks.cur]:
+            for msg in messages:
+                # Only include user messages
+                if msg["role"] != "user":
+                    continue
+                    
+                content = msg["content"]
+                
+                # Handle image/multipart content
+                if isinstance(content, list):
+                    for part in content:
+                        if part.get("type") == "text":
+                            markdown += part["text"] + "\n\n"
+                else:
+                    markdown += content + "\n\n"
+        
+        return markdown.strip()