Re: Mysterious fontification/C++ context issue

[Richard Stallman]

    >> Could we set open-paren-in-column-0-is-defun-start to t for c mode?
    >> If no one sees a better alternative, let's do that.  But let's wait
    >> a few days and see what else is suggested.

    > It seems that no better ideas are forthcoming, so I think we should go
    > ahead and do this.

    Could we revert the change to beginning-of-defun instead?

It seems clearly incorrect for beginning-of-defun to ignore
open-paren-in-column-0-is-defun-start.

For what other reason does C mode set open-paren-in-column-0-is-defun-start?