diff --git a/file_append.py b/file_append.py
new file mode 100644
index 0000000..15a808f
--- /dev/null
+++ b/file_append.py
@@ -0,0 +1,44 @@
+import os
+
+
+def check_append_file(prompt: str) -> str:
+    if "@" in prompt:
+        parts = prompt.split(" ")
+        content = []
+        for part in parts:
+            if part.startswith("@"):
+                filename = part[1:]
+                try:
+                    if os.path.exists(filename):
+                        with open(filename, "r") as f:
+                            content.append("%s:'''\n%s'''" % (filename, f.read()))
+                except FileNotFoundError:
+                    print(f"File '{filename}' not found.")
+        content.append(prompt)
+        return "\n".join(content)
+    return prompt
+
+
+
+if __name__ == "__main__":
+    exit()  # not accidentally trigger it
+
+    # Create some sample files
+    with open("fmain.py", "w") as f:
+        f.write("# This is main.py\n")
+    with open("finference.py", "w") as f:
+        f.write("# This is inference.py\n")
+
+    # Test cases
+    test_prompts = [
+        "@fmain.py",
+        "@fmain.py @finference.py",
+        "@fnonexistent.py",
+        "@fmain.py @fnonexistent.py"
+    ]
+
+    for prompt in test_prompts:
+        print(f"Testing prompt: {prompt}")
+        result = check_append_file(prompt)
+        print(f"Result: {result}")
+        print("-" * 20)
\ No newline at end of file
diff --git a/generation_loop.py b/generation_loop.py
index fcfc331..d7c1e94 100644
--- a/generation_loop.py
+++ b/generation_loop.py
@@ -3,20 +3,9 @@ import json
 import random
 from tool_helper import tool_list, parse_and_execute_tool_call
 from inference import Inference, torch_reseed
+from file_append import check_append_file
 
 
-def check_append_file(prompt: str) -> str:
-    if prompt.startswith("@"):
-        prompt = prompt[1:]  # Remove the '@'
-        filename = prompt.split(" ")[0]
-        try:
-            with open(filename, "r") as f:
-                content = f.read()
-                return "'''%s'''\n\n%s" % (content, prompt)
-        except:
-            print(f"File '{filename}' not found.")
-    return prompt
-
 
 def msg(role: str, content: str) -> dict:
     return {"role": role, "content": content}
@@ -84,22 +73,22 @@ class Terminal:
                 print("")
 
             elif input_text.startswith("/history"):
-                history = self.inference.tokenize(self.message, tokenize=False)
+                history = self.inference.tokenize(self.messages, tokenize=False)
                 # history = tokenizer.apply_chat_template(self.message, return_tensors="pt", tokenize=False, add_generation_prompt=False)
                 print(history)
 
             elif input_text.startswith("/undo"):
-                if len(self.message) > 2:
+                if len(self.messages) > 2:
                     print("undo latest prompt")
-                    self.message = self.message[:-2]
+                    self.message = self.messages[:-2]
                 else:
                     print("cannot undo because there are not enough self.message on history.")
                 print("")
 
             elif input_text.startswith("/regen"):
-                if len(self.message) >= 2:
+                if len(self.messages) >= 2:
                     print("regenerating message (not working)")
-                    self.message = self.message[:-1]
+                    self.messages = self.messages[:-1]
                     seed = random.randint(0, 2**32 - 1)  # Generate a random seed
                     torch_reseed(seed)
                     self.append_generate_chat(None)
@@ -119,8 +108,8 @@ class Terminal:
                 self.append_generate_chat(content)
 
             elif input_text.startswith("/auto"):
-                message_backup = self.message
-                self.message = [self.roleflip]
+                message_backup = self.messages
+                self.messages = [self.roleflip]
                 for m in self.message_backup:
                     role = m["role"]
                     content = m["content"]
@@ -153,11 +142,11 @@ class Terminal:
             elif input_text.startswith("/save"):
                 with open("messages.json", "w") as f:
                     json.dump(self.messages, f, indent=4)
-                
+
             elif input_text.startswith("/load"):
                 with open("messages.json", "r") as f:
                     new_messages = json.load(f)
-                    messages = [self.messages[0]] + new_messages[1:]
+                    self.messages = [self.messages[0]] + new_messages[1:]
 
             elif input_text.startswith("/help"):
                 print("!<prompt>   answer as 'tool' in <tool_response> tags")