Add --hook-args option to try-repo

pre_commit/commands/try_repo.py

@@ -4,6 +4,7 @@ import argparse
 import logging
 import os.path
 import tempfile
+import warnings
 
 import pre_commit.constants as C
 from pre_commit import git
@@ -54,8 +55,15 @@ def try_repo(args: argparse.Namespace) -> int:
 
         store = Store(tempdir)
         if args.hook:
-            hooks = [{'id': args.hook}]
+            hook = {'id': args.hook}
+            if args.hook_args is not None:
+                hook['args'] = args.hook_args
+            hooks = [hook]
         else:
+            if args.hook_args is not None:
+                warnings.warn(
+                    "Unused flag '--hook-args' as 'hook' is not specified.",
+                )
             repo_path = store.clone(repo, ref)
             manifest = load_manifest(os.path.join(repo_path, C.MANIFEST_FILE))
             manifest = sorted(manifest, key=lambda hook: hook['id'])

pre_commit/main.py

@@ -3,6 +3,7 @@ from __future__ import annotations
 import argparse
 import logging
 import os
+import shlex
 import sys
 from collections.abc import Sequence
 
@@ -171,6 +172,14 @@ def _add_run_options(parser: argparse.ArgumentParser) -> None:
     )
 
 
+def _add_hook_flags_option(parser: argparse.ArgumentParser) -> None:
+    parser.add_argument(
+        '--hook-args',
+        type=shlex.split,
+        help='Raw string with flags to pass into the hook (if specified).',
+    )
+
+
 def _adjust_args_and_chdir(args: argparse.Namespace) -> None:
     # `--config` was specified relative to the non-root working directory
     if os.path.exists(args.config):
@@ -324,6 +333,7 @@ def main(argv: Sequence[str] | None = None) -> int:
         ),
     )
     _add_run_options(try_repo_parser)
+    _add_hook_flags_option(try_repo_parser)
 
     uninstall_parser = _add_cmd(
         'uninstall', help='Uninstall the pre-commit script.',

tests/commands/try_repo_test.py

@@ -19,8 +19,13 @@ from testing.util import git_commit
 from testing.util import run_opts
 
 
-def try_repo_opts(repo, ref=None, **kwargs):
-    return auto_namedtuple(repo=repo, ref=ref, **run_opts(**kwargs)._asdict())
+def try_repo_opts(repo, ref=None, hook_args=None, **kwargs):
+    return auto_namedtuple(
+        repo=repo,
+        ref=ref,
+        hook_args=hook_args,
+        **run_opts(**kwargs)._asdict(),
+    )
 
 
 def _get_out(cap_out):
@@ -89,6 +94,33 @@ Bash hook............................................(no files to check)Skipped
 '''
 
 
+def test_try_repo_with_specific_hook_and_args(cap_out, tempdir_factory):
+    _run_try_repo(
+        tempdir_factory,
+        hook='bash_hook',
+        hook_args=['pwd', '&&', 'ls'],
+        verbose=True,
+    )
+    start, config, rest = _get_out(cap_out)
+    assert start == ''
+    config_pattern = re_assert.Matches(
+        '^repos:\n'
+        '-   repo: .+\n'
+        '    rev: .+\n'
+        '    hooks:\n'
+        '    -   id: bash_hook\n'
+        '        args:\n'
+        '        - pwd\n'
+        '        - \'&&\'\n'
+        '        - ls\n$',
+    )
+    config_pattern.assert_matches(config)
+    assert rest == '''\
+Bash hook............................................(no files to check)Skipped
+- hook id: bash_hook
+'''
+
+
 def test_try_repo_relative_path(cap_out, tempdir_factory):
     repo = make_repo(tempdir_factory, 'modified_file_returns_zero_repo')
     with cwd(git_dir(tempdir_factory)):