Repository: pallets/click
File: src/click/core.py (Python)

Code before:
        for param in self.params:
            all_names.difference_update(param.opts)
            all_names.difference_update(param.secondary_opts)
        return list(all_names)

    def get_help_option(self, ctx: Context) -> Option | None:
        """Returns the help option object.

        Unless ``add_help_option`` is ``False``.
        """
        help_option_names = self.get_help_option_names(ctx)

        if not help_option_names or not self.add_help_option:
            return None

        # Avoid circular import.
        from .decorators import help_option

        def dummy_func() -> None:
            pass

        # Call @help_option decorator to produce an help option with proper
        # defaults and attach it to the dummy function defined above.
        help_option(*help_option_names)(dummy_func)

        return dummy_func.__click_params__.pop()  # type: ignore[no-any-return, attr-defined]

    def make_parser(self, ctx: Context) -> _OptionParser:
        """Creates the underlying option parser for this command."""
        parser = _OptionParser(ctx)
        for param in self.get_params(ctx):
            param.add_to_parser(parser, ctx)
        return parser

    def get_help(self, ctx: Context) -> str:
        """Formats the help into a string and returns it.

        Calls :meth:`format_help` internally.
        """
        formatter = ctx.make_formatter()
        self.format_help(ctx, formatter)
        return formatter.getvalue().rstrip("\n")

    def get_short_help_str(self, limit: int = 45) -> str:
        """Gets short help for the command or makes it by shortening the
        long help string.
        """
        if self.short_help:
            text = inspect.cleandoc(self.short_help)
        elif self.help:
            text = make_default_short_help(self.help, limit)

Review comment (suggestion):
A throw-away function isn't needed here. The option decorator can be applied to the command `self` and popped from `self.params`.

```suggestion
        # apply help_option decorator and pop resulting option
        help_option(*help_option_names)(self)
        return self.params.pop() # type: ignore[return-value]
```

Code after:
        for param in self.params:
            all_names.difference_update(param.opts)
            all_names.difference_update(param.secondary_opts)
        return list(all_names)

    def get_help_option(self, ctx: Context) -> Option | None:
        """Returns the help option object.

        Skipped if :attr:`add_help_option` is ``False``.
        """
        help_option_names = self.get_help_option_names(ctx)

        if not help_option_names or not self.add_help_option:
            return None

        # Avoid circular import.
        from .decorators import help_option

        # apply help_option decorator and pop resulting option
        help_option(*help_option_names)(self)
        return self.params.pop() # type: ignore[return-value]

    def make_parser(self, ctx: Context) -> _OptionParser:
        """Creates the underlying option parser for this command."""
        parser = _OptionParser(ctx)
        for param in self.get_params(ctx):
            param.add_to_parser(parser, ctx)
        return parser

    def get_help(self, ctx: Context) -> str:
        """Formats the help into a string and returns it.

        Calls :meth:`format_help` internally.
        """
        formatter = ctx.make_formatter()
        self.format_help(ctx, formatter)
        return formatter.getvalue().rstrip("\n")

    def get_short_help_str(self, limit: int = 45) -> str:
        """Gets short help for the command or makes it by shortening the
        long help string.
        """
        if self.short_help:
            text = inspect.cleandoc(self.short_help)
        elif self.help:
            text = make_default_short_help(self.help, limit)
        else:
            text = ""

        if self.deprecated:
            deprecated_message = (