Disable universal newlines when reading TOML (#2408)

CHANGES.md

@@ -4,6 +4,7 @@
 
 ### _Black_
 
+- Do not accept bare carriage return line endings in pyproject.toml (#2408)
 - Improve error message for invalid regular expression (#2678)
 - Improve error message when parsing fails during AST safety check by embedding the
   underlying SyntaxError (#2693)

Pipfile

@@ -42,7 +42,7 @@ platformdirs= ">=2"
 click = ">=8.0.0"
 mypy_extensions = ">=0.4.3"
 pathspec = ">=0.8.1"
-tomli = ">=0.2.6, <2.0.0"
+tomli = ">=1.1.0, <3.0.0"
 typed-ast = "==1.4.3"
 typing_extensions = {markers = "python_version < '3.10'", version = ">=3.10.0.0"}
 black = {editable = true,extras = ["d"],path = "."}

setup.py

@@ -99,7 +99,7 @@ def find_python_files(base: Path) -> List[Path]:
     install_requires=[
         "click>=7.1.2",
         "platformdirs>=2",
-        "tomli>=0.2.6,<2.0.0",
+        "tomli>=1.1.0,<3.0.0",
         "typed-ast>=1.4.2; python_version < '3.8' and implementation_name == 'cpython'",
         "pathspec>=0.9.0, <1",
         "dataclasses>=0.6; python_version < '3.7'",

src/black/files.py

@@ -95,8 +95,8 @@ def parse_pyproject_toml(path_config: str) -> Dict[str, Any]:
 
     If parsing fails, will raise a tomli.TOMLDecodeError
     """
-    with open(path_config, encoding="utf8") as f:
-        pyproject_toml = tomli.loads(f.read())
+    with open(path_config, "rb") as f:
+        pyproject_toml = tomli.load(f)
     config = pyproject_toml.get("tool", {}).get("black", {})
     return {k.replace("--", "").replace("-", "_"): v for k, v in config.items()}