[Bug: 21.5-b27] font-lock-fontify-* / infinite loop

Mon Jan 8 15:45:33 EST 2007

================================================================
Dear Bug Team!

I've font-lock-mode turned on by default. Using Gnus (from CVS as
well; updated and installed shortly before this bug report) and
answering an email (yank (with Supercite as in the XEmacs repository)
and reply) font locking runs into an infinite loop while "Fontifying
*wide reply to <recipient>*... (regexps).." is shown in the status
bar.

The mouse cursor continuously changes from the busy cursor to the
normal cursor and back.

The backtrace below ("recent messages") is shown when I abort
fontifying (Meta-g; which I usually have to press *twice* before it
really aborts). 

Consequently, in the buffer to be fontified usually exactly one line
is correctly fontified while the rest is unmodified.

Interestingly, if I turn *off* font-lock-mode and switch it back on
while inside that buffer, it's being fontified correctly instantly.

I *think* I've seen this problem years ago once already and someone on
this list told me about a switch for font-lock-mode that fixed the
infinite loop but unfortunately I can't find the message in the
archives.

Feel free to request any additional information.

Oh, btw, why is my XEmacs standard menu ("File", etc.) suddenly in
German? 

LANG=en_US.utf8
LC_CTYPE=de_DE.utf8
LC_NUMERIC=de_DE.utf8
LC_TIME=de_DE.utf8
LC_COLLATE=de_DE.utf8
LC_MONETARY=de_DE.utf8
LC_MESSAGES=en_US.utf8
LC_PAPER=de_DE.utf8
LC_NAME=de_DE.utf8
LC_ADDRESS=de_DE.utf8
LC_TELEPHONE=de_DE.utf8
LC_MEASUREMENT=de_DE.utf8
LC_IDENTIFICATION=de_DE.utf8
LC_ALL=

================================================================

System Info to help track down your bug:
---------------------------------------

uname -a: Linux janus 2.6.19-gentoo-r2 #7 SMP PREEMPT Sat Jan 6 19:11:18 CET 2007 x86_64 AMD Athlon(tm) 64 X2 Dual Core Processor 4200+ AuthenticAMD GNU/Linux

./configure  '--prefix=/usr' '--with-widgets=motif' '--with-dialogs=motif' '--with-scrollbars=motif' '--with-menubars=lucid' '--with-x' '--with-msw=no' '--with-ncurses' '--with-xpm' '--with-athena=3d' '--with-gif' '--with-png' '--with-jpeg' '--with-tiff' '--with-xface' '--with-pop' '--with-sound=native' '--with-mule' '--with-error-checking=none' '--with-debug=no' '--with-gpm' '--with-pdump' '--with-kkcc' '--with-optimization' '--with-cflags=-mtune=athlon64 -march=athlon64 -O2 -pipe' '--with-dynamic' '--with-xft=emacs,tabs,gauges,menubars' '--with-dragndrop' '--with-zlib' '--with-ldap' '--with-modules' '--with-site-lisp=yes' '--with-site-modules=yes' 'CFLAGS=-mtune=athlon64 -march=athlon64 -O2 -pipe'

XEmacs 21.5-b27 "fiddleheads" (+CVS-20070106) configured for `x86_64-unknown-linux'.

Compilation Environment and Installation Defaults:
  Source code location:              /usr/src/emacsen-cvs/xemacs/xemacs
  Installation prefix:               /usr
  Operating system description file: `s/linux.h'
  Not using any machine description file
  Compiler version:                  gcc (GCC) 4.1.1 (Gentoo 4.1.1-r3)
    - GCC specs file:                specs.
    - Compiler command:              gcc  -Wall -Wno-switch -Wundef -Wsign-compare -Wno-char-subscripts -Wpacked -Wunused-parameter -g -O3 -mtune=athlon64 -march=athlon64 -O2 -pipe
  libc version:                      2.5
  Relocating allocator for buffers:  no
  GNU version of malloc:             yes
    - Using Doug Lea's new malloc from the GNU C Library.

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 fontconfig to manage fonts.
    - Compiling in support for Xft antialiased fonts (EXPERIMENTAL).
  Compiling in support for Motif.
  *WARNING*  Many versions of Motif are buggy, requiring workarounds.
             You are likely to experience slow redisplay.
             You may need to install vendor patches to Motif.
             See PROBLEMS for more information.
  Using Lucid menubars.
    - Using Xft to render antialiased fonts in menubars.
      WARNING: This feature will be replaced with a face.
  Using Motif scrollbars.
  Using Motif dialog boxes.
  Using Motif native widgets.
    - Using Xft to render antialiased fonts in tab controls.
      WARNING: This feature will be replaced with a face.
    - Using Xft to render antialiased fonts in progress bars.
      WARNING: This feature will be replaced with a face.
      WARNING: This feature not yet implemented; setting ignored.

TTY:
  Compiling in support for ncurses.
  Compiling in support for GPM (General Purpose Mouse).

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:
  Compiling in support for sound (native).
  Compiling in support for ALSA (Advanced Linux Sound Architecture).

Databases:
  Compiling in support for Berkeley database.
  Compiling in support for LDAP.

Internationalization:
  Compiling in support for Mule (multi-lingual Emacs).
  Compiling in support for XIM (X11R5+ I18N input method).
    - Using Motif to provide XIM support.

Mail:
  Compiling in support for POP mail retrieval.
  Compiling in support for "file" mail spool file locking method.

Other Features:
  Inhibiting IPv6 canonicalization at startup.
  Compiling in support for dynamic shared object modules.
  Using the new GC mark algorithms (KKCC).
  WARNING: ---------------------------------------------------------
  WARNING: The new algorithms are experimental. They are enabled by
  WARNING: default for this release. Use `--disable-kkcc' to
  WARNING: turn it off.
  WARNING: ---------------------------------------------------------
  Using the new portable dumper.
  Dumping into executable.

Load-Path Lisp Shadows:
----------------------
(/usr/lib/xemacs/xemacs-packages/lisp/ecrypto/sha1
/usr/lib/xemacs/xemacs-packages/lisp/gnus/sha1
/usr/lib/xemacs/xemacs-packages/lisp/ecrypto/password
/usr/lib/xemacs/xemacs-packages/lisp/gnus/password
/usr/lib/xemacs/xemacs-packages/lisp/ecrypto/md4
/usr/lib/xemacs/xemacs-packages/lisp/gnus/md4
/usr/lib/xemacs/xemacs-packages/lisp/ecrypto/hex-util
/usr/lib/xemacs/xemacs-packages/lisp/gnus/hex-util
/usr/lib/xemacs/xemacs-packages/lisp/ecrypto/encrypt
/usr/lib/xemacs/xemacs-packages/lisp/gnus/encrypt
/usr/lib/xemacs/xemacs-packages/lisp/gnus/tls
/usr/lib/xemacs/xemacs-packages/lisp/mail-lib/tls
/usr/lib/xemacs/xemacs-packages/lisp/gnus/netrc
/usr/lib/xemacs/xemacs-packages/lisp/mail-lib/netrc
/usr/lib/xemacs/xemacs-packages/lisp/gnus/starttls
/usr/lib/xemacs/xemacs-packages/lisp/mail-lib/starttls
/usr/lib/xemacs/xemacs-packages/lisp/gnus/pop3
/usr/lib/xemacs/xemacs-packages/lisp/mail-lib/pop3
/usr/lib/xemacs/xemacs-packages/lisp/gnus/rfc2104
/usr/lib/xemacs/xemacs-packages/lisp/mail-lib/rfc2104
/usr/lib/xemacs/xemacs-packages/lisp/gnus/dns-mode
/usr/lib/xemacs/xemacs-packages/lisp/net-utils/dns-mode
/usr/lib/xemacs/xemacs-packages/lisp/gnus/dns
/usr/lib/xemacs/xemacs-packages/lisp/net-utils/dns
/usr/lib/xemacs/xemacs-packages/lisp/gnus/dig
/usr/lib/xemacs/xemacs-packages/lisp/net-utils/dig
/usr/lib/xemacs/xemacs-packages/lisp/gnus/pgg-pgp5
/usr/lib/xemacs/xemacs-packages/lisp/pgg/pgg-pgp5
/usr/lib/xemacs/xemacs-packages/lisp/gnus/pgg-pgp
/usr/lib/xemacs/xemacs-packages/lisp/pgg/pgg-pgp
/usr/lib/xemacs/xemacs-packages/lisp/gnus/pgg-gpg
/usr/lib/xemacs/xemacs-packages/lisp/pgg/pgg-gpg
/usr/lib/xemacs/xemacs-packages/lisp/gnus/pgg-parse
/usr/lib/xemacs/xemacs-packages/lisp/pgg/pgg-parse
/usr/lib/xemacs/xemacs-packages/lisp/gnus/pgg-def
/usr/lib/xemacs/xemacs-packages/lisp/pgg/pgg-def
/usr/lib/xemacs/xemacs-packages/lisp/gnus/pgg
/usr/lib/xemacs/xemacs-packages/lisp/pgg/pgg
/usr/lib/xemacs/xemacs-packages/lisp/gnus/sasl-ntlm
/usr/lib/xemacs/xemacs-packages/lisp/sasl/sasl-ntlm
/usr/lib/xemacs/xemacs-packages/lisp/gnus/sasl-digest
/usr/lib/xemacs/xemacs-packages/lisp/sasl/sasl-digest
/usr/lib/xemacs/xemacs-packages/lisp/gnus/sasl-cram
/usr/lib/xemacs/xemacs-packages/lisp/sasl/sasl-cram
/usr/lib/xemacs/xemacs-packages/lisp/gnus/sasl
/usr/lib/xemacs/xemacs-packages/lisp/sasl/sasl
/usr/lib/xemacs/xemacs-packages/lisp/gnus/ntlm
/usr/lib/xemacs/xemacs-packages/lisp/sasl/ntlm
/usr/lib/xemacs/xemacs-packages/lisp/gnus/hmac-md5
/usr/lib/xemacs/xemacs-packages/lisp/sasl/hmac-md5
/usr/lib/xemacs/xemacs-packages/lisp/gnus/hmac-def
/usr/lib/xemacs/xemacs-packages/lisp/sasl/hmac-def
/usr/lib/xemacs/xemacs-packages/lisp/gnus/sieve-manage
/usr/lib/xemacs/xemacs-packages/lisp/sieve/sieve-manage
/usr/lib/xemacs/xemacs-packages/lisp/gnus/sieve-mode
/usr/lib/xemacs/xemacs-packages/lisp/sieve/sieve-mode
/usr/lib/xemacs/xemacs-packages/lisp/gnus/sieve
/usr/lib/xemacs/xemacs-packages/lisp/sieve/sieve
/usr/lib/xemacs/mule-packages/lisp/mule-base/korea-util
/usr/lib/xemacs-21.5-b27/lisp/mule/korea-util
/usr/lib/xemacs/mule-packages/lisp/mule-base/cyril-util
/usr/lib/xemacs-21.5-b27/lisp/mule/cyril-util
/usr/lib/xemacs/mule-packages/lisp/mule-base/ethio-util
/usr/lib/xemacs-21.5-b27/lisp/mule/ethio-util
/usr/lib/xemacs/mule-packages/lisp/mule-base/china-util
/usr/lib/xemacs-21.5-b27/lisp/mule/china-util
/usr/lib/xemacs/mule-packages/lisp/mule-base/japan-util
/usr/lib/xemacs-21.5-b27/lisp/mule/japan-util
/usr/lib/xemacs/mule-packages/lisp/mule-base/viet-util
/usr/lib/xemacs-21.5-b27/lisp/mule/viet-util
/usr/lib/xemacs/xemacs-packages/lisp/xemacs-base/regexp-opt
/usr/lib/xemacs-21.5-b27/lisp/regexp-opt
/usr/lib/xemacs/mule-packages/lisp/mule-ucs/unicode
/usr/lib/xemacs-21.5-b27/lisp/unicode
/usr/lib/xemacs/xemacs-packages/lisp/xemacs-base/easy-mmode
/usr/lib/xemacs-21.5-b27/lisp/easy-mmode
/usr/lib/xemacs/xemacs-packages/lisp/build/build-report
/usr/lib/xemacs-21.5-b27/lisp/build-report)

Installed XEmacs Packages:
-------------------------
(zenirc ver: 1.16 upstream: 2.112)
(xwem ver: 1.22 upstream: lg at xwem.org--2005/xwem--main--2.1--versionfix-1)
(xslt-process ver: 1.12 upstream: 1.2.1)
(xslide ver: 1.09 upstream: 0.2.2)
(xlib ver: 1.14 upstream: lg at xwem.org--2005/xlib--main--2.1--version-0)
(xetla ver: 1.01 upstream: steve at eicq.org--2005/xetla--main--1.1--version-0)
(xemacs-devel ver: 1.75 upstream: No-Upstream-Ver)
(xemacs-base ver: 2.08 upstream: No-Upstream-Ver)
(x-symbol ver: 1.1 upstream: 4.5.1)
(w3 ver: 1.33 upstream: 4.0pre47)
(vm ver: 7.22 upstream: 7.17)
(viper ver: 1.54 upstream: 3.09)
(view-process ver: 1.13 upstream: 2.4)
(vhdl ver: 1.22 upstream: 3.33.12)
(vc ver: 1.41 upstream: No-Upstream-Ver)
(tpu ver: 1.14 upstream: 4.2X)
(tm ver: 1.38 upstream: No-Upstream-Ver)
(time ver: 1.14 upstream: 1.17)
(textools ver: 1.15 upstream: No-Upstream-Ver)
(text-modes ver: 1.92 upstream: No-Upstream-Ver)
(texinfo ver: 1.3 upstream: No-Upstream-Ver)
(supercite ver: 1.21 upstream: 3.55x3)
(strokes ver: 1.1 upstream: No-Upstream-Ver)
(speedbar ver: 1.28 upstream: 0.14beta4)
(slider ver: 1.15 upstream: 0.3x1)
(sieve ver: 1.18 upstream: No-Upstream-Ver)
(sh-script ver: 1.21 upstream: 2.0f)
(sgml ver: 1.11 upstream: No-Upstream-Ver)
(semantic ver: 1.2 upstream: 1.4.4)
(scheme ver: 1.14 upstream: No-Upstream-Ver)
(ruby-modes ver: 1.02 upstream: 1.6.8)
(rmail ver: 1.14 upstream: No-Upstream-Ver)
(riece ver: 1.22 upstream: 2.0.2)
(reftex ver: 1.34 upstream: 4.21)
(re-builder ver: 1.05 upstream: 1.20)
(python-modes ver: 1.08 upstream: No-Upstream-Ver)
(psgml ver: 1.44 upstream: 1.3.1)
(ps-print ver: 1.11 upstream: 6.5.6)
(prog-modes ver: 2.09 upstream: No-Upstream-Ver)
(pgg ver: 1.06 upstream: 0.1)
(perl-modes ver: 1.09 upstream: No-Upstream-Ver)
(pcomplete ver: 1.04 upstream: 1.1.6)
(pcl-cvs ver: 1.67 upstream: R-2_9_9)
(pc ver: 1.28 upstream: No-Upstream-Ver)
(os-utils ver: 1.39 upstream: No-Upstream-Ver)
(oo-browser ver: 1.04 upstream: 4.08)
(ocaml ver: 0.06 upstream: 3.06)
(net-utils ver: 1.5 upstream: N/A)
(misc-games ver: 1.19 upstream: No-Upstream-Ver)
(mine ver: 1.16 upstream: 1.9)
(mh-e ver: 1.29 upstream: 7.4.2)
(mew ver: 1.19 upstream: 1.94.2)
(mailcrypt ver: 2.14 upstream: 3.5.8)
(mail-lib ver: 1.78 upstream: No-Upstream-Ver)
(jde ver: 1.51 upstream: 2.3.3)
(ispell ver: 1.32 upstream: 3.6)
(ilisp ver: 1.34 upstream: 5.12.0)
(igrep ver: 1.14 upstream: 2.111)
(idlwave ver: 1.32 upstream: 5.1)
(ibuffer ver: 1.09 upstream: No-Upstream-Ver)
(hyperbole ver: 1.16 upstream: 4.18)
(hm--html-menus ver: 1.23 upstream: 5.9)
(haskell-mode ver: 1.1 upstream: 2.1)
(gnats ver: 1.17 upstream: 3.101)
(games ver: 1.17 upstream: 1.04)
(fsf-compat ver: 1.15 upstream: No-Upstream-Ver)
(fortran-modes ver: 1.05 upstream: No-Upstream-Ver)
(forms ver: 1.15 upstream: 2.37)
(footnote ver: 1.16 upstream: 0.18x)
(eudc ver: 1.39 upstream: 1.32)
(eterm ver: 1.17 upstream: No-Upstream-Ver)
(eshell ver: 1.1 upstream: 2.4.1)
(escreen ver: 1.01 upstream: 1.16)
(emerge ver: 1.11 upstream: No-Upstream-Ver)
(eieio ver: 1.05 upstream: 0.17)
(efs ver: 1.33 upstream: 1.23)
(edt ver: 1.13 upstream: No-Upstream-Ver)
(edit-utils ver: 2.37 upstream: No-Upstream-Ver)
(ediff ver: 1.67 upstream: 2.75)
(edebug ver: 1.22 upstream: No-Upstream-Ver)
(ecrypto ver: 0.2 upstream: 2.0)
(ecb ver: 1.22 upstream: 2.31)
(docbookide ver: 0.07000000000000001 upstream: 0.1)
(dired ver: 1.17 upstream: 7.13)
(dictionary ver: 1.16 upstream: 1.8)
(debug ver: 1.18 upstream: No-Upstream-Ver)
(cookie ver: 1.15 upstream: No-Upstream-Ver)
(clearcase ver: 1.1 upstream: /main/laptop/165)
(cc-mode ver: 1.45 upstream: 5.30.10)
(calendar ver: 1.3 upstream: No-Upstream-Ver)
(calc ver: 1.26 upstream: 2.02fX3)
(c-support ver: 1.22 upstream: No-Upstream-Ver)
(build ver: 1.14 upstream: 2.02)
(bbdb ver: 1.29 upstream: 2.34)
(auctex ver: 1.46 upstream: 11.55)
(apel ver: 1.32 upstream: 10.6)
(ada ver: 1.14 upstream: 2.27)
(skk ver: 1.23 upstream: 10.62a)
(mule-ucs ver: 1.14 upstream: 0.84)
(mule-base ver: 1.49 upstream: No-Upstream-Ver)
(lookup ver: 1.15 upstream: 1.0)
(leim ver: 1.24 upstream: No-Upstream-Ver)
(latin-unity ver: 1.19 upstream: 1.19)
(egg-its ver: 1.27 upstream: No-Upstream-Ver)
(edict ver: 1.16 upstream: 0.9.9)

Installed Modules:
-----------------

Features:
--------

(xemacsbug shadow bbdb-sc bbdb supercite regi annotations browse-url
w3m-hist w3m-xmas path-util w3m-ccl pccl pccl-20 w3m-favicon w3m-image
w3m-proc w3m-util poem poem-xm pces pces-xfc pces-20 broken pces-xm
poe-xemacs overlay poe pym static apel-ver product smtpmail
latin-unity-tables latin-euro-standards latin-euro-latin10
latin-euro-latin9 latin-euro-latin8 latin-euro-latin7 latin-unity-vars
latin-unity message-utils pp gnus-cite ansi-color gnus-bcklg
gnus-async sort gnus-ml gnus-topic parse-time timezone nnfolder
byte-optimize bytecomp byte-compile nnml utf7 nnimap imap efs-cu
encrypt edmacro mail-extr gnus-junk boxquote rect ispell uudecode
deuglify smiley gnus-delay gnus-draft gnus-agent gnus-srvr nnvirtual
nntp gnus-cache gnus-msg gnus-art regexp-opt mm-uu mml2015 pgg
pgg-parse pgg-def mm-view nndraft nnmh gnus-score score-mode gnus-sum
nnoo gnus-group gnus-undo nnmail mail-source format-spec mailcrypt
comint gnus-start gnus-spec gnus-int gnus-range message ecomplete mml
mml-sec mml-smime smime password smime-ldap ldap dig mm-decode
mm-bodies mm-encode mailcap lpr mail-parse rfc2045 rfc2231 rfc2047 qp
ietf-drums mail-abbrevs sendmail rfc822 gmm-utils mailheader canlock
sha1 hex-util hashcash executable gnus-win gnus gnus-ems gnus-xmas
messagexmas nnheader nnheaderxm gnus-util netrc time-date mail-utils
mm-util timer-funcs mail-prsvr wid-edit gnuserv semantic-ia
semantic-analyze semantic-load semanticdb eieio-base eieio senator
ring semantic-imenu advice advice-preload imenu semantic-ctxt
semantic-util-modes timer semantic-util semantic assoc working mwheel
font-lock recent-files x-font-menu font-menu font disp-table cus-face
zenirc-autoloads xwem-autoloads xslt-process-autoloads
xslide-autoloads xlib-autoloads xetla-autoloads xemacs-devel-autoloads
xemacs-base-autoloads x-symbol-autoloads w3-autoloads vm-autoloads
viper-autoloads view-process-autoloads vhdl-autoloads vc-autoloads
tpu-autoloads tm-autoloads time-autoloads textools-autoloads
text-modes-autoloads texinfo-autoloads supercite-autoloads
strokes-autoloads speedbar-autoloads slider-autoloads sieve-autoloads
sh-script-autoloads sgml-autoloads semantic-autoloads scheme-autoloads
ruby-modes-autoloads rmail-autoloads riece-autoloads reftex-autoloads
re-builder-autoloads python-modes-autoloads psgml-autoloads
ps-print-autoloads prog-modes-autoloads pgg-autoloads
perl-modes-autoloads pcomplete-autoloads pcl-cvs-autoloads
pc-autoloads os-utils-autoloads oo-browser-autoloads ocaml-autoloads
net-utils-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 hyperbole-autoloads hm--html-menus-autoloads
haskell-mode-autoloads gnus-autoloads gnats-autoloads games-autoloads
fsf-compat-autoloads fortran-modes-autoloads forms-autoloads
footnote-autoloads eudc-autoloads eterm-autoloads eshell-autoloads
escreen-autoloads erc-autoloads emerge-autoloads eieio-autoloads
efs-autoloads edt-autoloads edit-utils-autoloads ediff-autoloads
edebug-autoloads ecrypto-autoloads ecb-autoloads docbookide-autoloads
dired-autoloads dictionary-autoloads debug-autoloads cookie-autoloads
clearcase-autoloads cc-mode-autoloads calendar-autoloads
calc-autoloads c-support-autoloads build-autoloads bbdb-autoloads
auctex-autoloads apel-autoloads ada-autoloads skk-autoloads
mule-ucs-autoloads mule-base-autoloads lookup-autoloads leim-autoloads
latin-unity-autoloads egg-its-autoloads edict-autoloads
modules-autoloads mule-autoloads auto-autoloads rsz-minibuf auto-show
fontl-hooks canna-leim tibetan slovenian czech romanian lao devanagari
indian ccl code-cmds gutter-items menubar-items x-menubar mode-motion
mouse behavior itimer auto-save lisp-mode easymenu easy-mmode
iso8859-1 page buff-menu lib-complete loadhist cus-file derived
newcomment env text-props fontconfig frame obsolete cus-start custom
widget cl-extra cl cl-19 packages backquote unicode font-mgr
motif-scrollbars cut-buffer xft-fonts lucid-menubars motif-dialogs x
c-balloon-help tty-frames tty toolbar native-sound alsa-sound
scrollbar unix-processes multicast network-streams subprocesses
modules menu-accelerator-support menubar berkeley-db md5 xemacs xim
mule gutter tiff png gif jpeg xface xpm xbm lisp-float-type
file-coding linux dialog devices window-system base64)

Recent keystrokes:
-----------------

down down down down down down up down down down up 
up up up RET down down RET RET C-end up RET up up up 
RET W v W v F RET button1 button1up down down down 
down down down down down down down down down down down 
down down down down down down down down down down down 
down down down down down down down down down down down 
down down down down down down down down down down down 
C-home M-x r p e BS BS e o BS p o TAB r TAB x e TAB 
RET

Recent messages (most recent first):
-----------------------------------

Warning: 

Defaulting to the GNU Emacs-derived `sendmail.el' mail client. This facility,
while part of base XEmacs, is heinously underfeatured, and not going to get
better in the medium term. We include it so that bug reports work without
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To choose a package from those installed, click on "Options" ->
"Internet" -> "Compose Mail With ..." and decide on one from the
list. Gnus and VM are full-featured and have active user communities.

To disable this warning and stick with the old behavior, you can explicitly
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Loading xemacsbug...done
Loading xemacsbug...
Making completion list...
Warning: Error in unknown: Quit

Backtrace follows:

  # (unwind-protect ...)
  # bind (val next prev start end prop value object newface override end start match highlight end highlights matcher keyword nkeywords iter old-progress progress bufname keywords case-fold-search loudly loudvar end start)
  font-lock-fontify-keywords-region(754 1400 nil)
  # (unwind-protect ...)
  # bind (modified buffer-undo-list inhibit-read-only old-syntax-table buffer-file-name buffer-file-truename loudly end beg)
  font-lock-default-fontify-region(754 1400 nil)
  # bind (loudly end beg)
  font-lock-fontify-region(754 1400)
  # bind (val end beg)
  #<compiled-function (beg end val) "...(5)" [end beg font-lock-fontify-region] 3>(754 1400 t)
  map-range-table(#<compiled-function (beg end val) "...(5)" [end beg font-lock-fontify-region] 3> #<range-table [754 1400) t [1401 1483) t [1484 1629) t [1630 2314) t [2315 2596) t [2597 3083) t [3084 3544) t [3545 3750) t [3752 3926) t 0x59b3b>)
  # (unwind-protect ...)
  # (unwind-protect ...)
  # (unwind-protect ...)
  # bind (dummy buffer)
  #<compiled-function (buffer dummy) "...(47)" [font-lock-pending-buffer-table font-lock-range-table buffer remhash buffer-live-p clear-range-table map-extents #<compiled-function (ex dummy-maparg) "...(32)" [font-lock-range-table ex end beg extent-start-position extent-end-position 0 1 put-range-table t] 5> nil font-lock-pending t put-text-property map-range-table #<compiled-function (beg end val) "...(5)" [end beg font-lock-fontify-region] 3>] 9>(#<buffer "*wide reply to Stephen J. Turnbull*"> t)
  # (unwind-protect ...)
  maphash(#<compiled-function (buffer dummy) "...(47)" [font-lock-pending-buffer-table font-lock-range-table buffer remhash buffer-live-p clear-range-table map-extents #<compiled-function (ex dummy-maparg) "...(32)" [font-lock-range-table ex end beg extent-start-position extent-end-position 0 1 put-range-table t] 5> nil font-lock-pending t put-text-property map-range-table #<compiled-function (beg end val) "...(5)" [end beg font-lock-fontify-region] 3>] 9> #<hash-table size 0/29 weakness key 0x59b36>)
  # (unwind-protect ...)
  # bind (match-data)
  font-lock-fontify-pending-extents()
  #<compiled-function nil "...(10)" [font-lock-pending-buffer-table hash-table-count 0 font-lock-fontify-pending-extents] 2>()
  # (unwind-protect ...)
  call-with-condition-handler(#<compiled-function (__call_trapping_errors_arg__) "...(17)" [__call_trapping_errors_arg__ errstr error-message-string lwarn general warning "Error in %s: %s\n\nBacktrace follows:\n\n%s" "unknown" backtrace-in-condition-handler-eliminating-handler] 8> #<compiled-function nil "...(10)" [font-lock-pending-buffer-table hash-table-count 0 font-lock-fontify-pending-extents] 2>)
  # (condition-case ... . ((error)))
  font-lock-pre-idle-hook()
  # (unwind-protect ...)
  # (catch #<INTERNAL OBJECT (XEmacs bug?) (opaque, size=0) 0xab0f28> ...)
  # (unwind-protect ...)
  # (unwind-protect ...)
  # bind (inhibit-quit)
  # (unwind-protect ...)
  # (unwind-protect ...)
  # bind (inhibit-quit)
  # (condition-case ... . error)
  # (catch top-level ...)

Fontifying *wide reply to Stephen J. Turnbull*... aborted.aborted.
("" . ">"), ">>", " >> "
Fontifying *wide reply to Stephen J. Turnbull*... (regexps)..
Fontifying *wide reply to Stephen J. Turnbull*...
("" . ">"), ">>", " >> "
("" . ">"), ">>", " >> "
("" . ">"), ">>", " >> "
("" . ">"), ">>", " >> "
("" . ">"), ">>", " >> "
("" . ">"), ">>", " >> "
("" . ">"), ">>", " >> "
("" . ">"), ">>", " >> "
("" . ">"), ">>", " >> "
Loading bbdb-sc...done
Fontifying *wide reply to Stephen J. Turnbull*... done.

-- 
Grüße, Wulf