X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/df2ae3bbe6c45298aabb6c04e85cb353205626f1..2dfa69bb7fc1d310902ae565271d595d307f166b:/black.py

diff --git a/black.py b/black.py
index 7e39c92..b9eca0a 100644
--- a/black.py
+++ b/black.py
@@ -3482,5 +3482,28 @@ def write_cache(
         pass
 
 
+def patch_click() -> None:
+    """Make Click not crash.
+
+    On certain misconfigured environments, Python 3 selects the ASCII encoding as the
+    default which restricts paths that it can access during the lifetime of the
+    application.  Click refuses to work in this scenario by raising a RuntimeError.
+
+    In case of Black the likelihood that non-ASCII characters are going to be used in
+    file paths is minimal since it's Python source code.  Moreover, this crash was
+    spurious on Python 3.7 thanks to PEP 538 and PEP 540.
+    """
+    try:
+        from click import core
+        from click import _unicodefun  # type: ignore
+    except ModuleNotFoundError:
+        return
+
+    for module in (core, _unicodefun):
+        if hasattr(module, "_verify_python3_env"):
+            module._verify_python3_env = lambda: None
+
+
 if __name__ == "__main__":
+    patch_click()
     main()