Hi, Of late I've been getting occasional Emacs crashes with the following backtrace: $ emacs -nw Fatal error 11: Segmentation fault Backtrace: emacs[0x4fbdb2] emacs[0x4e3389] emacs[0x4fa83e] emacs[0x4faa43] emacs[0x4faaaf] /usr/lib/libpthread.so.0(+0x11080)[0x7f1ebfa42080] emacs(re_search_2+0x38c)[0x53168c] emacs[0x526c12] emacs[0x527565] emacs[0x527747] emacs[0x554416] emacs[0x58a32b] emacs[0x553e7d] emacs[0x55426b] emacs[0x58a32b] emacs[0x553e7d] emacs[0x55426b] emacs[0x58a32b] emacs[0x553e7d] emacs[0x55426b] emacs[0x58a32b] emacs[0x55426b] emacs[0x5544dc] emacs[0x552695] emacs[0x554351] emacs[0x58a32b] emacs[0x55426b] emacs[0x58a32b] emacs[0x55426b] emacs[0x58a32b] emacs[0x55426b] emacs[0x552de6] emacs[0x42abca] emacs[0x437f5f] emacs[0x438087] emacs[0x43c3ea] emacs[0x440ca2] emacs[0x43f105] emacs[0x44a3c8] emacs[0x44d00a] emacs[0x460b9e] ... Segmentation fault (core dumped) I can't reproduce this minimally but it seems to happen when (1) I'm using emacsclient, the above crashed during an `emacsclient -c` session, and (2) when running some kind of file search, I usually use rgrep. Thanks! -deech