From 47d0e05d09208db6d5c38bfaaff0c9f3f610951a Mon Sep 17 00:00:00 2001
From: Joshua Cannon <3956745+thejcannon@users.noreply.github.com>
Date: Wed, 3 Jul 2024 21:08:52 -0500
Subject: [PATCH] use_filesnames_file

---
 pre_commit/clientlib.py    |  1 +
 pre_commit/commands/run.py |  6 ++++++
 pre_commit/hook.py         |  1 +
 tests/commands/run_test.py | 25 +++++++++++++++++++++++++
 tests/repository_test.py   |  1 +
 5 files changed, 34 insertions(+)

diff --git a/pre_commit/clientlib.py b/pre_commit/clientlib.py
index a49465e8..e94e3663 100644
--- a/pre_commit/clientlib.py
+++ b/pre_commit/clientlib.py
@@ -128,6 +128,7 @@ MANIFEST_HOOK_DICT = cfgv.Map(
     cfgv.Optional('always_run', cfgv.check_bool, False),
     cfgv.Optional('fail_fast', cfgv.check_bool, False),
     cfgv.Optional('pass_filenames', cfgv.check_bool, True),
+    cfgv.Optional('use_filesnames_file', cfgv.check_bool, False),
     cfgv.Optional('description', cfgv.check_string, ''),
     cfgv.Optional('language_version', cfgv.check_string, C.DEFAULT),
     cfgv.Optional('log_file', cfgv.check_string, ''),
diff --git a/pre_commit/commands/run.py b/pre_commit/commands/run.py
index 2a08dff0..8d99f3aa 100644
--- a/pre_commit/commands/run.py
+++ b/pre_commit/commands/run.py
@@ -7,6 +7,7 @@ import logging
 import os
 import re
 import subprocess
+import tempfile
 import time
 import unicodedata
 from collections.abc import Generator
@@ -187,6 +188,11 @@ def _run_single_hook(
 
         if not hook.pass_filenames:
             filenames = ()
+        elif hook.use_filesnames_file:
+            filenames_file = tempfile.NamedTemporaryFile("w+")
+            filenames_file.write("\n".join(filenames))
+            filenames = (f"@{filenames_file}",)
+
         time_before = time.monotonic()
         language = languages[hook.language]
         with language.in_env(hook.prefix, hook.language_version):
diff --git a/pre_commit/hook.py b/pre_commit/hook.py
index 309cd5be..0ef86b72 100644
--- a/pre_commit/hook.py
+++ b/pre_commit/hook.py
@@ -28,6 +28,7 @@ class Hook(NamedTuple):
     always_run: bool
     fail_fast: bool
     pass_filenames: bool
+    use_filesnames_file: bool
     description: str
     language_version: str
     log_file: str
diff --git a/tests/commands/run_test.py b/tests/commands/run_test.py
index 50a20f37..676d5fb5 100644
--- a/tests/commands/run_test.py
+++ b/tests/commands/run_test.py
@@ -1064,6 +1064,31 @@ def test_pass_filenames(
     assert (b'foo.py' in printed) == pass_filenames
 
 
+@pytest.mark.parametrize(
+    ('use_filesnames_file', 'hook_args'),
+    (
+        (True, []),
+        (False, []),
+        (True, ['some', 'args']),
+        (False, ['some', 'args']),
+    ),
+)
+def test_use_filesnames_file(
+        cap_out, store, repo_with_passing_hook,
+        use_filesnames_file, hook_args,
+):
+    with modify_config() as config:
+        config['repos'][0]['hooks'][0]['use_filesnames_file'] = use_filesnames_file
+        config['repos'][0]['hooks'][0]['args'] = hook_args
+    stage_a_file()
+    ret, printed = _do_run(
+        cap_out, store, repo_with_passing_hook, run_opts(verbose=True),
+    )
+    out_lines = printed.splitlines()
+    out_lines[-1] == b"Hello World"
+    assert out_lines[-2].startswith(b"@") == use_filesnames_file
+
+
 def test_fail_fast(cap_out, store, repo_with_failing_hook):
     with modify_config() as config:
         # More than one hook
diff --git a/tests/repository_test.py b/tests/repository_test.py
index ac065ec4..0033b84f 100644
--- a/tests/repository_test.py
+++ b/tests/repository_test.py
@@ -455,6 +455,7 @@ def test_manifest_hooks(tempdir_factory, store):
         minimum_pre_commit_version='0',
         name='Bash hook',
         pass_filenames=True,
+        use_filesnames_file=False,
         require_serial=False,
         stages=[
             'commit-msg',