This bug report will be sent to the Free Software Foundation, not to your local site managers! Please write in English, because the Emacs maintainers 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. In GNU Emacs 21.2.1 (i386-redhat-linux-gnu, X toolkit, Xaw3d scroll bars) of 2003-02-20 on porky.devel.redhat.com configured using `configure --host=i386-redhat-linux --build=i386-redhat-linux --target=i386-redhat-linux-gnu --program-prefix= --prefix=/usr --exec-prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin --sysconfdir=/etc --datadir=/usr/share --includedir=/usr/include --libdir=/usr/lib --libexecdir=/usr/libexec --localstatedir=/var --sharedstatedir=/usr/com --mandir=/usr/share/man --infodir=/usr/share/info --with-gcc --with-pop --with-sound' Important settings: value of $LC_ALL: nil value of $LC_COLLATE: nil value of $LC_CTYPE: nil value of $LC_MESSAGES: nil value of $LC_MONETARY: nil value of $LC_NUMERIC: nil value of $LC_TIME: nil value of $LANG: en_US locale-coding-system: iso-latin-1 default-enable-multibyte-characters: t Please describe exactly what actions triggered the bug and the precise symptoms of the bug: Hi. Loading the text file in the attached gzip file deterministically causes my emacs to hang. Even (keyboard-quit) won't interrupt it. A quick look with gdb suggests it's the regexp code that's at fault. I've trimmed the file down to something close to the minimal fault-revealing sequence. Let me know if you need more info. cheers alan