diff --git a/coder.py b/coder.py
index 7f4473a0a..48f2205d0 100755
--- a/coder.py
+++ b/coder.py
@@ -17,6 +17,7 @@ from tqdm import tqdm
 from pathlib import Path
 
 import os
+import pygit2
 import openai
 
 from dump import dump
@@ -233,12 +234,12 @@ class Coder:
 
         interrupted = False
         try:
-            if show_progress:
+            if show_progress is not None:
                 self.show_send_progress(completion, show_progress)
-            elif self.pretty:
+            elif self.pretty and show_progress:
                 self.show_send_output_color(completion)
             else:
-                self.show_send_output_plain(completion)
+                self.show_send_output_plain(completion, False)
         except KeyboardInterrupt:
             interrupted = True
 
@@ -259,7 +260,7 @@ class Coder:
         pbar.update(show_progress)
         pbar.close()
 
-    def show_send_output_plain(self, completion):
+    def show_send_output_plain(self, completion, show_output=True):
         self.resp = ""
 
         for chunk in completion:
@@ -271,8 +272,9 @@ class Coder:
             except AttributeError:
                 continue
 
-            sys.stdout.write(text)
-            sys.stdout.flush()
+            if show_output:
+                sys.stdout.write(text)
+                sys.stdout.flush()
 
     def show_send_output_color(self, completion):
         self.resp = ""
@@ -402,11 +404,64 @@ class Coder:
 
         return res
 
-    def commit(self, message_history):
-        # _messages = [
-        #    dict(role="system", content=prompts.commit_system),
-        # ]
-        pass
+    def commit(self, message_history, prefix=None):
+        repo_paths = set(pygit2.discover_repository(fname) for fname in self.fnames)
+
+        if len(repo_paths) > 1:
+            repo_paths = " ".join(repo_paths)
+            raise ValueError(f"Files must all be in one git repo, not: {repo_paths}")
+
+        repo = pygit2.Repository(repo_paths.pop())
+
+        """
+        index = repo.index
+        index.read()
+        for patch in index.diff_to_workdir():
+            print(patch.text)
+        """
+
+        patches = repo.diff("HEAD")
+        if not len(patches):
+            return
+
+        context = ""
+        if message_history:
+            context += "# Context:\n"
+            for msg in message_history:
+                context += msg["role"].upper() + ": " + msg["content"] + "\n"
+
+        diffs = "# Diffs:\n"
+        for diff in patches:
+            dump(dir(diff))
+            dump(diff.delta.new_file.path)
+            diffs += diff.text
+            diffs += "\n\n"
+
+        if not diffs:
+            return
+
+        messages = [
+            dict(role="system", content=prompts.commit_system),
+            dict(role="user", content=context + diffs),
+        ]
+
+        self.show_messages(messages, "commit")
+
+        commit_message, interrupted = self.send(
+            messages,
+            model="gpt-3.5-turbo",
+            show_progress=None,
+        )
+
+        commit_message = commit_message.strip()
+
+        if interrupted:
+            raise KeyboardInterrupt
+
+        if prefix:
+            commit_message = prefix + commit_message
+
+        print(commit_message)
 
 
 def main():
diff --git a/prompts.py b/prompts.py
index 6568bc0d6..92919da20 100644
--- a/prompts.py
+++ b/prompts.py
@@ -105,7 +105,7 @@ ONLY OUTPUT {fname} !!!
 
 # COMMIT
 commit_system = """You are an expert software engineer.
-Review the provided diffs which are about to be committed to a git repo.
+Review the provided context and diffs which are about to be committed to a git repo.
 Generate a 1 line, 1-2 sentence commit message.
 Reply with JUST the commit message, without comments, questions, etc.
 """