Correct hidden folder removal

The first fix to remove hidden folder was not working properly in case multiple hidden folders exist.

Author: fcollonval

jupyterlab-snippets/loader.py

@@ -15,10 +15,10 @@ def collect_snippets(self):
         snippets = []
         for root_path in self.snippet_paths:
             for dirpath, dirnames, filenames in os.walk(root_path, followlinks=True):
-                # Remove hidden folder
-                for folder_i, folder in enumerate(dirnames):
-                    if folder.startswith("."):
-                        dirnames.pop(folder_i)
+                # Remove hidden folder                
+                to_remove = [folder for folder in dirnames if folder.startswith(".")]
+                for folder in to_remove:
+                    dirnames.remove(folder)
 
                 for f in filenames:
                     fullpath = PurePath(dirpath).relative_to(root_path).joinpath(f)