Fix misdetection of project root with `--stdin-filename` (#3216)

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

diff --git a/src/black/files.py b/src/black/files.py
index 17515d52b57b6427363f97526deffcbdbc6fdbb2..d51c1bc7a90231106540bdb7fcdadb115d626225 100644 (file)
--- a/src/black/files.py
+++ b/src/black/files.py
@@ -39,7 +39,9 @@ if TYPE_CHECKING:
 
 
 @lru_cache()
 
 
 @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
     """Return a directory containing .git, .hg, or pyproject.toml.
 
     That directory will be a common parent of all files and directories


@@ -52,6 +54,8 @@ 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.
     """
     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())]
 
     if not srcs:
         srcs = [str(Path.cwd().resolve())]