[ESS] Debugger entered--Lisp error

[Leo]

On 2012-09-04 13:03 +0800, Leo wrote:
> It is fine for this command to behave like this but there are call-sites
> where this error gets in the way such as `ess-calculate-indent' which
> hurts indentation.

`beginning-of-defun-function' if defined should behave like
beginning-of-defun:

  If search is successful, return t; point ends up at the beginning
  of the line where the search succeeded.  Otherwise, return nil.

So the definition of ess-beginning-of-function doesn't meet this
requirement. Could someone fix it?

Leo