Add shell completions by shtab

pre-commit --print-completion bash | sudo tee /usr/share/bash-completion/completions/pre-commit
pre-commit --print-completion zsh | sudo tee /usr/share/zsh/site-functions/_pre-commit
pre-commit --print-completion tcsh | sudo tee /etc/profile.d/pre-commit.completion.csh

pre_commit/_shtab.py

@@ -0,0 +1,16 @@
+from __future__ import annotations
+
+from argparse import ArgumentParser
+from typing import Any
+
+FILE = None
+DIRECTORY = DIR = None
+
+
+def add_argument_to(
+    parser: ArgumentParser, *args: list[Any], **kwargs: dict[Any, Any],
+) -> ArgumentParser:
+    from argparse import Action
+
+    Action.complete = None  # type: ignore
+    return parser