test: Use permissions from git in lint-files.py #25015

 161 | @@ -145,26 +162,26 @@ def check_all_file_permissions() -> int:
 162 |              continue
 163 |          else:
 164 |              print(

---

  69 | @@ -63,17 +70,29 @@ def full_extension(self) -> Optional[str]:
  70 |      @property
  71 |      def permissions(self) -> int:
  72 |          """
  73 | -        Returns the octal file permission of the file
  74 | +        Returns the octal file permission of the file. Internally, git only
  75 | +        keeps an 'executable' bit, so this will always return 0o644 or 0o755.
  76 |          """
  77 | -        return int(oct(os.stat(self.file_path).st_mode)[-3:])
  78 | +        return self._permissions

---

 188 | @@ -178,7 +189,7 @@ def check_shebang_file_permissions() -> int:
 189 |                      continue
 190 |  
 191 |              print(
 192 | -                f"""File "{filename}" contains a shebang line, but has the file permission {file_meta.permissions} instead of the expected executable permission {ALLOWED_PERMISSION_EXECUTABLES}. Do "chmod {ALLOWED_PERMISSION_EXECUTABLES} {filename}" (or remove the shebang line)."""
 193 | +                    f"""File "{filename}" contains a shebang line, but has the file permission {file_meta.permissions:03o} instead of the expected executable permission {ALLOWED_PERMISSION_EXECUTABLES}. Do "chmod {ALLOWED_PERMISSION_EXECUTABLES} {filename}" (or remove the shebang line)."""

---

  20 | -CMD_SHEBANG_FILES = "git grep --full-name --line-number -I '^#!'"
  21 | +CMD_ALL_FILES = ["git", "ls-files", "-z", "--full-name", "--stage"]
  22 | +CMD_SHEBANG_FILES = ["git", "grep", "--full-name", "--line-number", "-I", "^#!"]
  23 | +
  24 | +# this intentionally includes uppercase variants, as to be able to flag them
  25 | +ALL_SOURCE_FILENAMES_REGEXP = r"^.*\.([cC][pP][pP]|[hH]|[pP][yY]|[sS][hH])$"

---