From 1f3a9cf98432ac25ec025674f45f511af49c7ae1 Mon Sep 17 00:00:00 2001
From: "Derrick Hammer (aider)" <derrick@derrickhammer.com>
Date: Mon, 12 May 2025 08:18:20 -0400
Subject: [PATCH] feat: add --auto-commit-message argument to control
 auto-commit message generation

---
 aider/args.py              |  6 ++++++
 aider/coders/base_coder.py |  3 +++
 aider/repo.py              | 11 +++++++----
 tests/basic/test_coder.py  | 28 ++++++++++++++++++++++++++++
 4 files changed, 44 insertions(+), 4 deletions(-)

diff --git a/aider/args.py b/aider/args.py
index 08c9bde76..86159262d 100644
--- a/aider/args.py
+++ b/aider/args.py
@@ -398,6 +398,12 @@ def get_parser(default_config_files, git_root):
 
     ##########
     group = parser.add_argument_group("Git settings")
+        group.add_argument(
+            "--auto-commit-message",
+            action=argparse.BooleanOptionalAction,
+            default=True,
+            help="Enable/disable automatic LLM commit message generation for auto-commits and '/commit' without message.",
+        )
     group.add_argument(
         "--git",
         action=argparse.BooleanOptionalAction,
diff --git a/aider/coders/base_coder.py b/aider/coders/base_coder.py
index f37e47bed..aa82895fd 100755
--- a/aider/coders/base_coder.py
+++ b/aider/coders/base_coder.py
@@ -335,6 +335,7 @@ class Coder:
         file_watcher=None,
         auto_copy_context=False,
         auto_accept_architect=True,
+        auto_commit_message=True,
     ):
         # Fill in a dummy Analytics if needed, but it is never .enable()'d
         self.analytics = analytics if analytics is not None else Analytics()
@@ -348,6 +349,7 @@ class Coder:
 
         self.auto_copy_context = auto_copy_context
         self.auto_accept_architect = auto_accept_architect
+        self.auto_commit_message = auto_commit_message
 
         self.ignore_mentions = ignore_mentions
         if not self.ignore_mentions:
@@ -434,6 +436,7 @@ class Coder:
                     fnames,
                     None,
                     models=main_model.commit_message_models(),
+                    auto_commit_message=self.auto_commit_message,
                 )
             except FileNotFoundError:
                 pass
diff --git a/aider/repo.py b/aider/repo.py
index 01652b15f..c6b9d9f47 100644
--- a/aider/repo.py
+++ b/aider/repo.py
@@ -74,6 +74,7 @@ class GitRepo:
         subtree_only=False,
         git_commit_verify=True,
         attribute_co_authored_by=False,  # Added parameter
+        auto_commit_message=True,
     ):
         self.io = io
         self.models = models
@@ -86,6 +87,7 @@ class GitRepo:
         self.attribute_commit_message_author = attribute_commit_message_author
         self.attribute_commit_message_committer = attribute_commit_message_committer
         self.attribute_co_authored_by = attribute_co_authored_by  # Assign from parameter
+        self.auto_commit_message = auto_commit_message
         self.commit_prompt = commit_prompt
         self.subtree_only = subtree_only
         self.git_commit_verify = git_commit_verify
@@ -208,10 +210,11 @@ class GitRepo:
         if message:
             commit_message = message
         else:
-            user_language = None
-            if coder:
-                user_language = coder.get_user_language()
-            commit_message = self.get_commit_message(diffs, context, user_language)
+            if coder and self.auto_commit_message:
+                user_language = coder.get_user_language() if coder else None
+                commit_message = self.get_commit_message(diffs, context, user_language)
+            else:
+                commit_message = None
 
         # Retrieve attribute settings, prioritizing coder.args if available
         if coder and hasattr(coder, "args"):
diff --git a/tests/basic/test_coder.py b/tests/basic/test_coder.py
index e9cbe6842..c34a7a145 100644
--- a/tests/basic/test_coder.py
+++ b/tests/basic/test_coder.py
@@ -1403,6 +1403,34 @@ This command will print 'Hello, World!' to the console."""
                     # (because user rejected the changes)
                     mock_editor.run.assert_not_called()
 
+    def test_auto_commit_message_flag(self):
+        with GitTemporaryDirectory():
+            repo = git.Repo()
+            fname = Path("test.txt")
+            fname.touch()
+            
+            # Test with auto_commit_message=True (default)
+            io = InputOutput(yes=True)
+            coder = Coder.create(
+                self.GPT35,
+                "diff",
+                io=io,
+                fnames=[str(fname)],
+                auto_commit_message=True,
+            )
+            assert coder.repo.auto_commit_message is True
+
+            # Test with auto_commit_message=False
+            io = InputOutput(yes=True)
+            coder = Coder.create(
+                self.GPT35,
+                "diff",
+                io=io,
+                fnames=[str(fname)],
+                auto_commit_message=False,
+            )
+            assert coder.repo.auto_commit_message is False
+
 
 if __name__ == "__main__":
     unittest.main()