From 9bf70d8641136fa81e4f13d066fb1822eb8db301 Mon Sep 17 00:00:00 2001
From: "Paul Gauthier (aider)" <paul@aider.chat>
Date: Fri, 21 Mar 2025 15:24:22 -0700
Subject: [PATCH] refactor: Enhance git blame detection with specific
 similarity thresholds

---
 scripts/blame.py | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/scripts/blame.py b/scripts/blame.py
index 26cab873e..cae9bbb97 100755
--- a/scripts/blame.py
+++ b/scripts/blame.py
@@ -224,9 +224,10 @@ def get_counts_for_file(start_tag, end_tag, authors, fname):
                 [
                     "git",
                     "blame",
-                    "-M",
-                    "-C",
-                    "-C",
+                    "-M100",  # Detect moved lines within a file with 100% similarity
+                    "-C100",  # Detect moves across files with 100% similarity
+                    "-C",     # Increase detection effort
+                    "-C",     # Increase detection effort even more
                     "--abbrev=9",
                     f"{start_tag}..{end_tag}",
                     "--",
@@ -235,7 +236,18 @@ def get_counts_for_file(start_tag, end_tag, authors, fname):
             )
         else:
             text = run(
-                ["git", "blame", "-M", "-C", "-C", "--abbrev=9", f"{start_tag}..HEAD", "--", fname]
+                [
+                    "git", 
+                    "blame", 
+                    "-M100",  # Detect moved lines within a file with 100% similarity
+                    "-C100",  # Detect moves across files with 100% similarity
+                    "-C",     # Increase detection effort
+                    "-C",     # Increase detection effort even more
+                    "--abbrev=9", 
+                    f"{start_tag}..HEAD", 
+                    "--", 
+                    fname
+                ]
             )
         if not text:
             return None