Adding upstream version 4.5.0+dfsg.

Signed-off-by: Daniel Baumann <daniel@debian.org>

pre_commit_hooks/check_symlinks.py

@@ -0,0 +1,27 @@
+from __future__ import annotations
+
+import argparse
+import os.path
+from typing import Sequence
+
+
+def main(argv: Sequence[str] | None = None) -> int:
+    parser = argparse.ArgumentParser(description='Checks for broken symlinks.')
+    parser.add_argument('filenames', nargs='*', help='Filenames to check')
+    args = parser.parse_args(argv)
+
+    retv = 0
+
+    for filename in args.filenames:
+        if (
+                os.path.islink(filename) and
+                not os.path.exists(filename)
+        ):  # pragma: no cover (symlink support required)
+            print(f'{filename}: Broken symlink')
+            retv = 1
+
+    return retv
+
+
+if __name__ == '__main__':
+    raise SystemExit(main())