Add option to skip the first line of source code (#3299)

[etc/vim.git] / src / black / files.py

diff --git a/src/black/files.py b/src/black/files.py
index 17515d52b57b6427363f97526deffcbdbc6fdbb2..ed503f5fec79bc69d693a9d1c72d82254304b782 100644 (file)
--- a/src/black/files.py
+++ b/src/black/files.py
@@ -26,7 +26,8 @@ if sys.version_info >= (3, 11):
         import tomllib
     except ImportError:
         # Help users on older alphas
-        import tomli as tomllib
+        if not TYPE_CHECKING:
+            import tomli as tomllib
 else:
     import tomli as tomllib
 
@@ -39,7 +40,9 @@ if TYPE_CHECKING:
 
 
 @lru_cache()
-def find_project_root(srcs: Sequence[str]) -> Tuple[Path, str]:
+def find_project_root(
+    srcs: Sequence[str], stdin_filename: Optional[str] = None
+) -> Tuple[Path, str]:
     """Return a directory containing .git, .hg, or pyproject.toml.
 
     That directory will be a common parent of all files and directories
@@ -52,6 +55,8 @@ def find_project_root(srcs: Sequence[str]) -> Tuple[Path, str]:
     the second element as a string describing the method by which the
     project root was discovered.
     """
+    if stdin_filename is not None:
+        srcs = tuple(stdin_filename if s == "-" else s for s in srcs)
     if not srcs:
         srcs = [str(Path.cwd().resolve())]