Your bug report #26694: preview-at-point fails on very long lines with "End of buffer" which was filed against the auctex package, has been closed. The explanation is attached below, along with your original report. If you require more details, please reply to 26694@debbugs.gnu.org. -- 26694: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=26694 GNU Bug Tracking System Contact help-debbugs@gnu.org with problems