diff --git a/aider/repomap.py b/aider/repomap.py
index 9577c4e89..713424a3b 100644
--- a/aider/repomap.py
+++ b/aider/repomap.py
@@ -113,11 +113,12 @@ class RepoMap:
 
         if self.has_ctags:
             files_listing = self.get_ranked_tags_map(chat_files, other_files)
-            num_tokens = self.token_count(files_listing)
-            if self.io:
-                self.io.tool_output(f"ctags map: {num_tokens/1024:.1f} k-tokens")
-            ctags_msg = " with selected ctags info"
-            return files_listing, ctags_msg
+            if files_listing:
+                num_tokens = self.token_count(files_listing)
+                if self.io:
+                    self.io.tool_output(f"ctags map: {num_tokens/1024:.1f} k-tokens")
+                ctags_msg = " with selected ctags info"
+                return files_listing, ctags_msg
 
         files_listing = self.get_simple_files_map(other_files)
         ctags_msg = ""
diff --git a/aider/utils.py b/aider/utils.py
index d758340dd..a25cf635e 100644
--- a/aider/utils.py
+++ b/aider/utils.py
@@ -99,7 +99,7 @@ def replace_most_similar_chunk(whole, part, replace):
     if max_similarity < similarity_thresh:
         return
 
-    replace_lines = replace.splitlines()
+    replace_lines = replace.splitlines() + [""]
     modified_whole = (
         whole_lines[:most_similar_chunk_start]
         + replace_lines
diff --git a/tests/test_repomap.py b/tests/test_repomap.py
index b43fc7779..f1902acef 100644
--- a/tests/test_repomap.py
+++ b/tests/test_repomap.py
@@ -8,7 +8,7 @@ from aider.repomap import RepoMap
 
 
 class TestRepoMap(unittest.TestCase):
-    def test_get_tags_map(self):
+    def test_get_repo_map(self):
         # Create a temporary directory with sample files for testing
         test_files = [
             "test_file1.py",
@@ -24,18 +24,18 @@ class TestRepoMap(unittest.TestCase):
 
             repo_map = RepoMap(root=temp_dir)
             other_files = [os.path.join(temp_dir, file) for file in test_files]
-            result = repo_map.get_tags_map(other_files)
+            result = repo_map.get_repo_map([], other_files)
 
             # Check if the result contains the expected tags map
-            self.assertIn("test_file1.py:", result)
-            self.assertIn("test_file2.py:", result)
-            self.assertIn("test_file3.md:", result)
-            self.assertIn("test_file4.json:", result)
+            self.assertIn("test_file1.py", result)
+            self.assertIn("test_file2.py", result)
+            self.assertIn("test_file3.md", result)
+            self.assertIn("test_file4.json", result)
 
-    def test_get_tags_map_with_identifiers(self):
+    def test_get_repo_map_with_identifiers(self):
         # Create a temporary directory with a sample Python file containing identifiers
-        test_file = "test_file_with_identifiers.py"
-        file_content = """\
+        test_file1 = "test_file_with_identifiers.py"
+        file_content1 = """\
 class MyClass:
     def my_method(self, arg1, arg2):
         return arg1 + arg2
@@ -44,16 +44,28 @@ def my_function(arg1, arg2):
     return arg1 * arg2
 """
 
+        test_file2 = "test_file_import.py"
+        file_content2 = """\
+from test_file_with_identifiers import MyClass
+
+obj = MyClass()
+print(obj.my_method(1, 2))
+print(my_function(3, 4))
+"""
+
         with tempfile.TemporaryDirectory() as temp_dir:
-            with open(os.path.join(temp_dir, test_file), "w") as f:
-                f.write(file_content)
+            with open(os.path.join(temp_dir, test_file1), "w") as f:
+                f.write(file_content1)
+
+            with open(os.path.join(temp_dir, test_file2), "w") as f:
+                f.write(file_content2)
 
             repo_map = RepoMap(root=temp_dir)
-            other_files = [os.path.join(temp_dir, test_file)]
-            result = repo_map.get_tags_map(other_files)
+            other_files = [os.path.join(temp_dir, test_file1), os.path.join(temp_dir, test_file2)]
+            result = repo_map.get_repo_map([], other_files)
 
             # Check if the result contains the expected tags map with identifiers
-            self.assertIn("test_file_with_identifiers.py:", result)
+            self.assertIn("test_file_with_identifiers.py", result)
             self.assertIn("MyClass", result)
             self.assertIn("my_method", result)
             self.assertIn("my_function", result)
@@ -61,7 +73,7 @@ def my_function(arg1, arg2):
     def test_check_for_ctags_failure(self):
         with patch("subprocess.run") as mock_run:
             mock_run.side_effect = Exception("ctags not found")
-            repo_map = RepoMap(use_ctags=True)
+            repo_map = RepoMap()
             result = repo_map.check_for_ctags()
             self.assertFalse(result)
 
@@ -75,11 +87,11 @@ def my_function(arg1, arg2):
                     b' status = main()$/", "kind": "variable"}'
                 ),
             )
-            repo_map = RepoMap(use_ctags=True)
+            repo_map = RepoMap()
             result = repo_map.check_for_ctags()
             self.assertTrue(result)
 
-    def test_get_tags_map_without_ctags(self):
+    def test_get_repo_map_without_ctags(self):
         # Create a temporary directory with a sample Python file containing identifiers
         test_files = [
             "test_file_without_ctags.py",
@@ -96,15 +108,15 @@ def my_function(arg1, arg2):
                 with open(os.path.join(temp_dir, file), "w") as f:
                     f.write("")
 
-            repo_map = RepoMap(use_ctags=False, root=temp_dir)
+            repo_map = RepoMap(root=temp_dir)
+            repo_map.has_ctags = False  # force it off
+
             other_files = [os.path.join(temp_dir, file) for file in test_files]
-            result = repo_map.get_tags_map(other_files)
+            result = repo_map.get_repo_map([], other_files)
 
             # Check if the result contains each specific file in the expected tags map without ctags
             for file in test_files:
-                self.assertIn(
-                    f"{os.path.splitext(file)[0]}.{os.path.splitext(file)[1][1:]}:", result
-                )
+                self.assertIn(file, result)
 
 
 if __name__ == "__main__":