I just sent out the previous letter before it was finished, so here comes the rest of it (sorry about that): Steps to repeat: emacs -Q Evaluate the following: (save-excursion (insert "(") (dotimes (x 10) (insert "abc\n"))) C-g (Just to know where you are in C-h l) Now press TAB and down arrow over and over again, as fast as you can, like you're reindenting code. After a few lines, Emacs stops to indent. Looking at the end of C-h l, you will see something like: C-g C-h l Here, a is missing, which explains the indentation problems. Sincerely, Anders Lindgren On Mon, Jan 20, 2014 at 4:26 PM, GNU bug Tracking System < help-debbugs@gnu.org> wrote: > Thank you for filing a new bug report with debbugs.gnu.org. > > This is an automatically generated reply to let you know your message > has been received. > > Your message is being forwarded to the package maintainers and other > interested parties for their attention; they will reply in due course. > > Your message has been sent to the package maintainer(s): > bug-gnu-emacs@gnu.org > > If you wish to submit further information on this problem, please > send it to 16505@debbugs.gnu.org. > > Please do not send mail to help-debbugs@gnu.org unless you wish > to report a problem with the Bug-tracking system. > > -- > 16505: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=16505 > GNU Bug Tracking System > Contact help-debbugs@gnu.org with problems >