1 files changed, 18 insertions, 1 deletions
diff --git a/hooks/git-commit-confirm.py b/hooks/git-commit-confirm.py
index 2441d23..618ac20 100755
--- a/hooks/git-commit-confirm.py
+++ b/hooks/git-commit-confirm.py
@@ -42,7 +42,12 @@ import re
 import subprocess
 import sys
 
-from _common import read_payload, respond_ask, scan_attribution
+from _common import (
+    read_payload,
+    read_referenced_file,
+    respond_ask,
+    scan_attribution,
+)
 
 
 MAX_FILES_SHOWN = 25
@@ -140,6 +145,18 @@ def extract_commit_message(cmd: str) -> str:
     if long_form:
         return "\n\n".join(msg for _, msg in long_form).strip()
 
+    # File-backed message: -F <file> / --file <file> / --file=<file>.
+    # Read the file so its text is attribution-scanned. If it can't be read
+    # safely, fall through to UNPARSEABLE_MESSAGE so the hook asks (fail-safe).
+    file_flag = re.search(
+        r"(?:^|\s)(?:-F|--file)[=\s]+(\"[^\"]+\"|'[^']+'|\S+)", cmd
+    )
+    if file_flag:
+        path = file_flag.group(1).strip("\"'")
+        text = read_referenced_file(path)
+        if text is not None:
+            return text.strip()
+
     return UNPARSEABLE_MESSAGE