From 3b72ed0d4809a4f485891d0b565379217cb47e9f Mon Sep 17 00:00:00 2001
From: Tsuyoshi Hombashi <tsuyoshi.hombashi@gmail.com>
Date: Mon, 31 Dec 2018 22:03:31 +0900
Subject: [PATCH] Improve an error message when failed to load pyproject.toml
 (#653)

---
 black.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/black.py b/black.py
index 8855c37..52c5b0c 100644
--- a/black.py
+++ b/black.py
@@ -160,7 +160,9 @@ def read_pyproject_toml(
         pyproject_toml = toml.load(value)
         config = pyproject_toml.get("tool", {}).get("black", {})
     except (toml.TomlDecodeError, OSError) as e:
-        raise click.BadOptionUsage(f"Error reading configuration file: {e}", ctx)
+        raise click.FileError(
+            filename=value, hint=f"Error reading configuration file: {e}"
+        )
 
     if not config:
         return None
-- 
2.39.5