On 2012-09-04 16:00 +0800, Vitalie Spinu wrote: > In development version C-M-a is bound to > ess-goto-beginning-of-function-or-para which has an explicit error > protection for such cases. This is orthogonal to the issue I reported. The bug is setting beginning-of-defun-function and end-of-defun-function to something not conforming to their requirements. Leo