diff --git a/aider/coder.py b/aider/coder.py
index bced5fc7a..e3bce32f5 100755
--- a/aider/coder.py
+++ b/aider/coder.py
@@ -122,9 +122,12 @@ class Coder:
 
         self.repo = repo
 
-    def get_files_content(self):
+    def get_files_content(self, fnames=None):
+        if not fnames:
+            fnames = self.abs_fnames
+
         prompt = ""
-        for fname in self.abs_fnames:
+        for fname in fnames:
             relative_fname = os.path.relpath(fname, self.root)
             prompt += utils.quoted_file(fname, relative_fname)
         return prompt
diff --git a/aider/commands.py b/aider/commands.py
index 84df70535..344ee0e64 100644
--- a/aider/commands.py
+++ b/aider/commands.py
@@ -144,6 +144,7 @@ class Commands:
     def cmd_add(self, args):
         "Add matching files to the chat"
 
+        added_fnames = []
         files = self.coder.get_all_relative_files()
         for word in args.split():
             matched_files = [file for file in files if word in file]
@@ -156,9 +157,22 @@ class Commands:
                 if abs_file_path not in self.coder.abs_fnames:
                     self.coder.abs_fnames.add(abs_file_path)
                     self.console.print(f"[red]Added {matched_file} to the chat")
+                    added_fnames.append(matched_file)
                 else:
                     self.console.print(f"[red]{matched_file} is already in the chat")
 
+        if not added_fnames:
+            return
+
+        quoted_fnames = self.coder.get_files_content(added_fnames)
+        reply = prompts.added_files.format(quoted_fnames=quoted_fnames)
+
+        from aider.dump import dump
+
+        dump(reply)
+
+        return reply
+
     def completions_drop(self, partial):
         files = self.coder.get_inchat_relative_files()
 
diff --git a/aider/prompts.py b/aider/prompts.py
index 8d858bb5c..f9e7e5ca4 100644
--- a/aider/prompts.py
+++ b/aider/prompts.py
@@ -106,3 +106,8 @@ Reply with JUST the commit message, without quotes, comments, questions, etc!
 undo_command_reply = (
     "I did not like those edits, so I did `git reset --hard HEAD~1` to discard them."
 )
+
+added_files = """Here is the content of more files:
+
+{quoted_fnames}
+"""