Please write in English if possible, because the Emacs maintainers usually do not have translators to read other languages for them. Your bug report will be posted to the bug-gnu-emacs@gnu.org mailing list, and to the gnu.emacs.bug news group. Please describe exactly what actions triggered the bug and the precise symptoms of the bug: In the current development head only: `M-x calculator' moves point to some arbitrary point in the buffer. You may test this in *scratch* buffer after startup (point will be moved to the end of the buffer in this case). This simple patch fixes it: