diff --git a/aider/coders/base_coder.py b/aider/coders/base_coder.py
index 2fc3be1be..17fbfa8e3 100755
--- a/aider/coders/base_coder.py
+++ b/aider/coders/base_coder.py
@@ -60,6 +60,16 @@ class ChatChunks:
     cur: List = field(default_factory=list)
     reminder: List = field(default_factory=list)
 
+    def all_messages(self):
+        return (
+            self.system
+            + self.examples
+            + self.done
+            + self.files
+            + self.cur
+            + self.reminder
+        )
+
 
 class Coder:
     abs_fnames = None
@@ -1749,14 +1759,3 @@ class Coder:
 
     def apply_edits(self, edits):
         return
-
-    def all_messages(self):
-        chunks = self.format_chat_chunks()
-        return (
-            chunks.system
-            + chunks.examples
-            + chunks.done
-            + chunks.files
-            + chunks.cur
-            + chunks.reminder
-        )