texinfmt.el: texinfo-format-separate-node fail invalid regexp

Dear Bug Team! How-To-Repeat: C-x C-f example.texi (attached file), and M-x texinfo-format-buffer. Invalid regexp: "Invalid preceding regular expression" (backtrace attached) When regexp special character (e.g. "+") in node-name ("C++"), re-search-backward call with invalid regexp. ChangeLog & diff file attached; use search-backward instead of re-search-backward. ================================================================ System Info to help track down your bug: --------------------------------------- uname -a: FreeBSD rave.kaoru.trans-nt.com 4.7-STABLE FreeBSD 4.7-STABLE #8: Sun Nov 10 19:51:09 JST 2002 root＠rave.kaoru.trans-nt.com:/usr/obj/usr/src/sys/RAVE i386 ./configure '--extra-verbose' '--cflags=-O2' '--dynamic=yes' '--with-mule' '--with-site-lisp' '--with-x11' '--with-tty' '--with-xface' '--with-xpm' '--with-gtk=no' '--with-gnome=no' '--with-xim=no' '--with-sound=none' '--with-ipv6-cname=no' '--with-ldap=no' '--with-postgresql=no' '--x-includes=/usr/X11R6/include' '--x-libraries=/usr/X11R6/lib' '--with-canna=no' '--with-wnn6=yes' '--with-wnn=no' '--with-png' '--with-gif' '--with-jpeg' '--with-pop' '--site-includes=/usr/local/include:/usr/local/include/wnn6' '--site-libraries=/usr/local/lib' '--site-prefixes=/usr/local' XEmacs 21.4.10 "Military Intelligence" configured for `i386-unknown-freebsd4.7'. Compilation / Installation: Source code location: /usr/local/src/xemacs Installation prefix: /usr/local Additional header files: /usr/local/include /usr/local/include/wnn6 Additional libraries: /usr/local/lib Additional prefixes: /usr/local Runtime library search path: /usr/local/lib:/usr/X11R6/lib Operating system description file: `s/freebsd.h' Machine description file: `m/intel386.h' Compiler: gcc -O2 Relocating allocator for buffers: yes GNU version of malloc: yes Linking with `-z nocombreloc'. - Consider configuring with --pdump. Window System: Compiling in support for the X window system: - X Windows headers location: /usr/X11R6/include - X Windows libraries location: /usr/X11R6/lib - Handling WM_COMMAND properly. Using Lucid menubars. Using Lucid scrollbars. Using Motif dialog boxes. Using Motif native widgets. TTY: Compiling in support for ncurses. Images: Compiling in support for GIF images (builtin). Compiling in support for XPM images. Compiling in support for PNG images. Compiling in support for JPEG images. Compiling in support for TIFF images. Compiling in support for X-Face message headers. Sound: Databases: Compiling in support for DBM. Internationalization: Compiling in support for Mule (multi-lingual Emacs). Compiling in support for the WNN input method on Mule. - Using WNN version 6. Mail: Compiling in support for POP mail retrieval. Compiling in support for "flock" mail spool file locking method. Other Features: Inhibiting IPv6 canonicalization at startup. Compiling in support for dynamic shared object modules. Installed XEmacs Packages: ------------------------- ((zenirc:version 1.13 :type regular) (xslt-process :version 1.1 :type regular) (xslide :version 1.03 :type regular) (xemacs-devel :version 1.48 :type single-file) (xemacs-base :version 1.68 :type regular) (w3 :version 1.25 :type regular) (vm :version 7.07 :type regular) (viper :version 1.34 :type regular) (view-process :version 1.12 :type regular) (vhdl :version 1.15 :type regular) (vc-cc :version 1.21 :type regular) (vc :version 1.33 :type regular) (tramp :version 1.08 :type regular) (tpu :version 1.12 :type regular) (tooltalk :version 1.13 :type regular) (time :version 1.12 :type regular) (textools :version 1.12 :type regular) (text-modes :version 1.52 :type single-file) (texinfo :version 1.2 :type regular) (supercite :version 1.19 :type regular) (strokes :version 1.08 :type regular) (speedbar :version 1.24 :type regular) (sounds-wav :version 1.1 :type regular) (sounds-au :version 1.1 :type regular) (sml-mode :version 0.03 :type regular) (slider :version 1.13 :type regular) (sieve :version 1.09 :type regular) (sh-script :version 1.15 :type regular) (sgml :version 1.08 :type regular) (semantic :version 1.14 :type regular) (scheme :version 1.11 :type regular) (sasl :version 1.12 :type regular) (rmail :version 1.13 :type regular) (reftex :version 1.28 :type regular) (psgml-dtds :version 1.02 :type regular) (psgml :version 1.33 :type regular) (ps-print :version 1.08 :type regular) (prog-modes :version 1 .65 :type single-file) (pcomplete :version 1.01 :type regular) (pcl-cvs :version 1.64 :type regular) (pc :version 1.25 :type single-file) (os-utils :version 1.28 :type single-file) (ocaml :version 0.03 :type regular) (net-utils :version 1.28 :type single-file) (mmm-mode :version 1.0 :type regular) (misc-games :version 1.15 :type single-file) (mine :version 1.14 :type regular) (mh-e :version 1.15 :type regular) (mew :version 1.17 :type regular) (mailcrypt :version 2.11 :type regular) (mail-lib :version 1.49 :type regular) (jde :version 1.35 :type regular) (ispell :version 1.24 :type regular) (ilisp :version 1.28 :type regular) (igrep :version 1.09 :type regular) (idlwave :version 1.25 :type regular) (ibuffer :version 1.08 :type regular) (hm--html-menus :version 1.18 :type regular) (haskell-mode :version 1.03 :type regular) (gnats :version 1.15 :type regular) (games :version 1.13 :type regular) (fsf-compat :version 1.11 :type single-file) (frame-icon :version 1.09 :type regular) (forms :version 1.14 :type regular) (footnote :version 1.15 :type regular) (eudc :version 1.36 :type regular) (eterm :version 1.13 :type regular) (ess :version 1.02 :type regular) (eshell :version 1.03 :type regular) (emerge :version 1.09 :type regular) (elib :version 1.1 :type single-file) (eieio :version 1.03 :type regular) (efs :version 1.29 :type regular) (edt :version 1.12 :type regular) (edit-utils :version 1.93 :type single-file) (ediff :version 1.41 :type regular) (edebug :version 1.14 :type regular) (ecrypto :version 0.11 :type regular) (docbookide :version 0.05 :type regular) (dired :version 1.12 :type regular) (dictionary :version 1.11 :type regular) (debug :version 1.15 :type regular) (crisp :version 1.12 :type regular) (cookie :version 1.14 :type regular) (clearcase :version 1.04 :type regular) (cc-mode :version 1.3 :type regular) (calendar :version 1.18 :type regular) (calc :version 1.23 :type regular) (c-support :version 1.16 :type single-file) (build :version 1.07 :type regular) (bbdb :version 1.21 :type regular) (auctex :version 1.32 :type regular) (ada :version 1.1 :type regular) (skk :version 1.22 :type regular) (mule-ucs :version 1.04 :type regular) (mule-base :version 1.42 :type regular) (lookup :version 1.12 :type regular) (locale :version 1.18 :type regular) (leim :version 1.19 :type regular) (latin-unity :version 1.05 :type regular) (egg-its :version 1.26 :type regular) (edict :version 1.13 :type regular)) Features: -------- (debug informat gnus-fun gnus-cite sort gnus-async mel-q-ccl gnus-ml disp-table nndraft nnmh gnus-agent gnus-srvr gnus-score score-mode nnvirtual gnus-msg gnus-art gnus-sum gnus-group gnus-undo nntp gnus-cache nnimap nnmail mail-source format-spec nnoo imap gnus-start message mail-abbrevs mailheader canlock gnus-range gnus-spec gnus-int gnus-win gnus gnus-ems gnus-xmas messagexmas gnus-util netrc time-date parse-time nnheader nnheaderxm mmgnus running-pterodactyl-gnus-0_73-or-later gnus-vers mu-cite wl-score egg-jpn egg-wnn egg egg-leim tdf-mode smtp sasl sasl-anonymous sasl-login sasl-plain x-face-xmas x-face add-log view-less view hyper-apropos develock find-func texinfmt texnfo-upd executable tex-info texinfo flyspell ispell wl-mime mime-play filename mime-edit pgg-parse pccl pccl-20 pgg-def signature mail-utils mime-setup mail-mime-setup semi-setup mime-image elmo-filter elmo-mark elmo-sendlog elmo-internal elmo-pop3 elmo-imap4 elmo-nntp elmo-net elmo-dop elmo-localdir elmo-cache elmo-map elp wl-address wl-thread wl-summary ps-print lpr wl-refile wl-message elmo-mime mmelmo-buffer mmelmo-imap mime-view mime-conf calist semi-def mmimap mime-parse mmbuffer mmgeneric elmo-multi wl-folder wl wl-xmas wl-util pp elmo elmo-database elmo-msgdb luna wl-draft emu invisible inv-xemacs wl-template xemacsbug shadow sendmail rfc822 elisp-info-index cl-specs func-menu efs-cu wl-demo wl-highlight wl-vars wl-version elmo-util utf7 elmo-date timezone elmo-vars elmo-version eword-encode checkdoc init rave init-frame paren mic-paren windows revive init-www init-irc init-texmf env tex-jp latex tex tex-site init-gnus init-wl init-mew init-prog cc-styles cc-vars cc-defs init-lisp font-lock info elisp-info init-mua lsdb mime eword-decode mel mime-def mcharset mcs-20 mcs-xm mcs-xmu wid-edit cus-face pcustom std11 alist poem poem-xm pces pces-xfc pces-20 broken pces-xm path-util byte-optimize bytecomp byte-compile poe-xemacs timer overlay poe pym edebug eval-reg static apel-ver product init-misc autoinsert japan-util advice advice-preload uniquify kaoru regexp-opt zenirc-autoloads xslt-process-autoloads xslide-autoloads xemacs-devel-autoloads xemacs-base-autoloads w3-autoloads vm-autoloads viper-autoloads view-process-autoloads vhdl-autoloads vc-cc-autoloads vc-autoloads tramp-autoloads tpu-autoloads tooltalk-autoloads time-autoloads textools-autoloads text-modes-autoloads texinfo-autoloads supercite-autoloads strokes-autoloads speedbar-autoloads sounds-wav-autoloads sounds-au-autoloads sml-mode-autoloads slider-autoloads sieve-autoloads sh-script-autoloads sgml-autoloads semantic-autoloads scheme-autoloads sasl-autoloads rmail-autoloads reftex-autoloads psgml-dtds-autoloads psgml-autoloads ps-print-autoloads prog-modes-autoloads pcomplete-autoloads pcl-cvs-autoloads pc-autoloads os-utils-autoloads ocaml-autoloads net-utils-autoloads mmm-mode-autoloads misc-games-autoloads mine-autoloads mh-e-autoloads mew-autoloads mailcrypt-autoloads mail-lib-autoloads jde-autoloads ispell-autoloads ilisp-autoloads igrep-autoloads idlwave-autoloads ibuffer-autoloads hm--html-menus-autoloads haskell-mode-autoloads gnats-autoloads games-autoloads fsf-compat-autoloads frame-icon-autoloads forms-autoloads footnote-autoloads eudc-autoloads eterm-autoloads ess-autoloads eshell-autoloads emerge-autoloads elib-autoloads eieio-autoloads efs-autoloads edt-autoloads edit-utils-autoloads ediff-autoloads edebug-autoloads ecrypto-autoloads docbookide-autoloads dired-autoloads dictionary-autoloads debug-autoloads crisp-autoloads cookie-autoloads clearcase-autoloads cc-mode-autoloads calendar-autoloads calc-autoloads c-support-autoloads build-autoloads bbdb-autoloads auctex-autoloads ada-autoloads skk-autoloads mule-ucs-autoloads mule-base-autoloads lookup-autoloads locale-autoloads leim-autoloads latin-unity-autoloads egg-its-autoloads edict-autoloads wl-autoloads gnus-autoloads semi-autoloads mu-autoloads lsdb-autoloads liece-autoloads flim-autoloads chise-autoloads apel-autoloads lisp-autoloads loadhist auto-show fontl-hooks x-iso8859-1 slovenian czech romanian ccl mule-help code-cmds gutter-items menubar-items x-menubar mode-motion mouse itimer auto-save lisp-mode easymenu iso8859-1 page buff-menu lib-complete cus-file derived frame text-props obsolete cus-start custom widget cl-extra mini-cl cl cl-19 packages backquote very-early-lisp file-coding wnn mule lucid-scrollbars cut-buffer lucid-menubars motif-dialogs x c-balloon-help tty-frames tty toolbar scrollbar unix-processes multicast network-streams subprocesses modules menu-accelerator-support menubar dbm md5 xemacs gutter tiff png gif jpeg xface xpm xbm lisp-float-type berkeley-unix dialog devices window-system base64) Recent keystrokes: ----------------- C-g C-c 3 c C-x C-f M-p M-p C-a C-f C-f C-k SPC e x a m p l SPC t e x i RET M-x t e x i n f o SPC f o SPC b u SPC RET C-p C-SPC ESC > M-w C-x C-f B a BS BS b a c k t r a c e RET C-y C-x C-s M-x t e x i n f SPC o f o BS BS BS BS BS BS BS BS BS r e p o r t SPC e m a SPC b u SPC RET Recent messages (most recent first): ----------------------------------- Saving /home/kaoru/Mail/draft/24... Type C-c C-x C-z to exit MIME mode, and type C-c C-x ? to get help. (New file) Making completion list... Wrote /home/kaoru/backtrace (New file) Entering debugger... Formatting: C++ ... Formatting: Top ... Removing trailing whitespace from Info buffer... Converting example.texi to Info format... Formatting Info file: example.info Formatting Info file... Making completion list... Memorize current window configuration into 3 Switch to window[3] [3] is nil. C)reate D)up F)indfile B)uff X)M-x k)KeyFunc&exit N)o: Quit texinfo-format-separate-node Fontifying ChangeLog<tmp>... done.