Missing return value in context manager example (Managing resources)?

[zapp42]

The API documentation for the Context.with_resource() method states

"Returns: Whatever context_manager.__enter__() returns."

In the example code from the "Managing resources" section, the code looks like this:

def __enter__(self):
        path = os.path.join(self.home, "repo.db")
        self.db = open_database(path)

And later:

def cli(ctx, repo_home):
    ctx.obj = ctx.with_resource(Repo(repo_home))

For me ctx.obj is None after this call, which seems to be in line with the documentation of with_resource().

Is there a return self missing in the __enter__() method, or am I missing something?

Environment:

• Python version: 3.12
• Click version: 8.17