use_filesnames_file

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, ''),

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):

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