From 58e1f625ab78de77f79a77528a21ec83e6779c08 Mon Sep 17 00:00:00 2001
From: Yuri D'Elia <wavexx@thregr.org>
Date: Thu, 28 Oct 2021 11:51:52 +0200
Subject: [PATCH] Handle missing components in path canonicalization

The trailing components are not guarantee to exist. Avoid doing a second
stat, just ignore FileNotFoundError exceptions in _canon_subpath.
---
 pre_commit/main.py | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/pre_commit/main.py b/pre_commit/main.py
index c18c1a6a..34f16db8 100644
--- a/pre_commit/main.py
+++ b/pre_commit/main.py
@@ -159,8 +159,11 @@ def _add_run_options(parser: argparse.ArgumentParser) -> None:
 def _canon_subpath(path: str, toplevel: str) -> str:
     tail = ''
     while len(path):
-        if os.path.samefile(path, toplevel):
-            return os.path.join(toplevel, tail)
+        try:
+            if os.path.samefile(path, toplevel):
+                return os.path.join(toplevel, tail)
+        except FileNotFoundError:
+            pass
         path, base = os.path.split(path)
         tail = os.path.join(base, tail)
     return tail