diff --git a/aider/coder.py b/aider/coder.py
index 76f26a700..f6da50f4b 100755
--- a/aider/coder.py
+++ b/aider/coder.py
@@ -159,17 +159,28 @@ class Coder:
         return prompt
 
     def get_files_messages(self):
-        files_content = prompts.files_content_prefix
-        files_content += self.get_files_content()
-
-        all_content = files_content
+        all_content = ""
+        if self.abs_fnames:
+            files_content = prompts.files_content_prefix
+            files_content += self.get_files_content()
+            all_content += files_content
 
         if self.repo is not None:
-            files_listing = get_tags_map(self.get_all_abs_files())
-            repo_content = prompts.repo_content_prefix
-            repo_content += files_listing
+            other_files = set(self.get_all_abs_files()) - set(self.abs_fnames)
+            if other_files:
+                files_listing = get_tags_map(other_files)
+                if self.abs_fnames:
+                    other = "other "
+                else:
+                    other = ""
 
-            all_content = repo_content + "\n\n" + files_content
+                repo_content = prompts.repo_content_prefix.format(other=other)
+                repo_content += files_listing
+
+                if all_content:
+                    all_content += "\n\n"
+
+                all_content += repo_content
 
         files_messages = [
             dict(role="user", content=all_content),
@@ -180,7 +191,7 @@ class Coder:
             ),
         ]
 
-        # utils.show_messages(files_messages, "FILES")
+        utils.show_messages(files_messages, "FILES")
         return files_messages
 
     def run(self):
diff --git a/aider/ctags.py b/aider/ctags.py
index 0926d8918..722f3b57d 100644
--- a/aider/ctags.py
+++ b/aider/ctags.py
@@ -50,12 +50,13 @@ def split_path(path, root_dname):
 
 
 def get_tags(filename, root_dname):
-    yield split_path(filename, root_dname)
-
     cmd = ["ctags", "--fields=+S", "--output-format=json", filename]
     output = subprocess.check_output(cmd).decode("utf-8")
     output = output.splitlines()
 
+    if not output:
+        yield split_path(filename, root_dname)
+
     for line in output:
         tag = json.loads(line)
         path = tag.get("path")
diff --git a/aider/prompts.py b/aider/prompts.py
index 42aec8906..8d6c53d22 100644
--- a/aider/prompts.py
+++ b/aider/prompts.py
@@ -79,10 +79,13 @@ files_content_gpt_no_edits = "I wasn't able to see any properly formatted edits
 
 files_content_local_edits = "I made some changes to the files myself."
 
-repo_content_prefix = "Here is a map showing all the other files and key content:\n\n"
-
 files_content_prefix = (
-    "You can propose changes to *only* these files (ask if you need to see others):\n\n"
+    "You can propose changes to *only* these files (ask before editing others):\n\n"
+)
+
+repo_content_prefix = (
+    "Here is a map showing all the {other}files and ctags content. You *must* ask with the full"
+    " path of the file before suggesting edits to these files:\n\n"
 )
 
 files_content_suffix = (
diff --git a/tests/test_commands.py b/tests/test_commands.py
index 50aa06427..7dbb62f2d 100644
--- a/tests/test_commands.py
+++ b/tests/test_commands.py
@@ -5,6 +5,7 @@ from unittest.mock import MagicMock
 from aider.commands import Commands
 from aider.io import InputOutput
 
+
 class TestCommands(TestCase):
     def test_cmd_add(self):
         # Create a temporary directory and change the current working directory
@@ -13,7 +14,9 @@ class TestCommands(TestCase):
 
             # Initialize the Commands and InputOutput objects
             io = InputOutput(pretty=False, yes=True)
-            coder = MagicMock()
+            from aider.coder import Coder
+
+            coder = Coder(io)
             commands = Commands(io, coder)
 
             # Call the cmd_add method with 'foo.txt' and 'bar.txt' as a single string