cperl-mode hijacks cc-mode's `c-fill-paragraph' (M-q)

Dear Bug Team! After visiting a Perl file (triggering cperl-mode), I can no longer fill paragraphs in any C++ mode (or cc-mode) buffers. In cc-mode the key sequence M-q runs `c-fill-paragraph'. This function works fine until cperl-mode gets loaded. After cperl-mode is active c-fill-paragraph fails with a message like: Args out of range: #<buffer "assertions.hh">, 0, 2 Here is a typical back-trace: Signaling: (args-out-of-range #<buffer "assertions.hh"> 0 2) cperl-fill-paragraph(nil) fill-paragraph(nil) c-fill-paragraph(nil) call-interactively(c-fill-paragraph) The only workaround I've found is to execute (setq fill-paragraph-function nil) This seems to restore proper behavior to `c-fill-paragraph.' cc-mode and cperl-mode should be able to coexist. That is, I should be able to edit both Perl files and C++ files in the same session without losing functionality in either. cperl-mode is being too aggressive here, or making global changes that should only be relevant to buffers actually in cperl-mode. ================================================================ System Info to help track down your bug: --------------------------------------- uname -a: CYGWIN_NT-5.0 TSUNAMI 1.3.2(0.39/3/2) 2001-05-20 23:28 i686 unknown ./configure '--with-dragndrop' '--with-postgresql=no' '--with-x=no' '--bindir=/usr/local/bin/i686-pc-cygwin' '--with-site-lisp=yes' '--with-ipv6-cname=no' '--with-netinstall' XEmacs 21.4.6 "Common Lisp (Windows)" configured for `i686-pc-cygwin'. Compilation / Installation: Source code location: /development/xemacs/xemacs-21.4-release Installation prefix: /usr/local Operating system description file: `s/cygwin32.h' Machine description file: `m/intel386.h' Compiler: gcc -I/usr/lib/../include/noX -I/usr/lib/../include/noX -g -O3 -Wall -Wno-switch -Winline -Wmissing-prototypes -Wsign-compare -Wshadow -Wpointer-arith Relocating allocator for buffers: no GNU version of malloc: yes Window System: Compiling in support for the Microsoft window system. Using MS-Windows menubars. Using MS-Windows scrollbars. Using MS-Windows dialog boxes. Using MS-Windows native widgets. Compiling in support for Drag'n'Drop (EXPERIMENTAL). - Drag'n'Drop prototype: msw. 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: Compiling in support for sound (native). Databases: Compiling in support for GNU DBM. Internationalization: Compiling in support for file coding. Mail: Compiling in support for POP mail retrieval. Other Features: Inhibiting IPv6 canonicalization at startup. Compiling in support for dynamic shared object modules. Installed XEmacs Packages: ------------------------- ((zenirc:version 1.13 :type regular) (xemacs-devel :version 1.4 :type single-file) (xemacs-base :version 1.57 :type regular) (w3 :version 1.21 :type regular) (vm :version 7.02 :type regular) (viper :version 1.31 :type regular) (view-process :version 1.11 :type regular) (vc-cc :version 1.18 :type regular) (vc :version 1.3 :type regular) (tramp :version 1.01 :type regular) (time :version 1.11 :type regular) (textools :version 1.12 :type regular) (text-modes :version 1.36 :type single-file) (texinfo :version 1.2 :type regular) (strokes :version 1.08 :type regular) (speedbar :version 1.22 :type regular) (sounds-wav :version 1.1 :type regular) (slider :version 1.13 :type regular) (sh-script :version 1.13 :type regular) (sgml :version 1.08 :type regular) (semantic :version 1.11 :type regular) (scheme :version 1.11 :type regular) (reftex :version 1.24 :type regular) (psgml :version 1.26 :type regular) (prog-modes :version 1 .49 :type single-file) (pcomplete :version 1.01 :type regular) (pcl-cvs :version 1.57 :type regular) (pc :version 1.21 :type single-file) (os-utils :version 1.26 :type single-file) (net-utils :version 1.23 :type single-file) (misc-games :version 1.15 :type single-file) (mailcrypt :version 2.11 :type regular) (mail-lib :version 1.42 :type regular) (ispell :version 1.24 :type regular) (ilisp :version 1.2 :type regular) (igrep :version 1.08 :type regular) (hm--html-menus :version 1.17 :type regular) (gnus :version 1.58 :type regular) (fsf-compat :version 1.09 :type single-file) (frame-icon :version 1.09 :type regular) (forms :version 1.14 :type regular) (footnote :version 1.13 :type regular) (eudc :version 1.35 :type regular) (eterm :version 1.13 :type regular) (eshell :version 1.02 :type regular) (emerge :version 1.09 :type regular) (elib :version 1.1 :type single-file) (eieio :version 1.02 :type regular) (efs :version 1.27 :type regular) (edt :version 1.12 :type regular) (edit-utils :version 1.75 :type single-file) (ediff :version 1.35 :type regular) (edebug :version 1.14 :type regular) (dired :version 1.11 :type regular) (dictionary :version 1.06 :type regular) (debug :version 1.14 :type regular) (cookie :version 1.13 :type regular) (clearcase :version 1.02 :type regular) (cc-mode :version 1.27 :type regular) (calendar :version 1.18 :type regular) (calc :version 1.18 :type regular) (c-support :version 1.16 :type single-file) (build :version 1.05 :type regular) (bbdb :version 1.17 :type regular) (auctex :version 1.29 :type regular) (apel :version 1.2 :type regular)) Features: -------- (mail-abbrevs xemacsbug shadow sendmail rfc822 cc-mode cc-align cc-cmds cc-engine cc-styles cc-langs cc-vars wid-edit cc-menus imenu cc-defs font-lock cperl-mode cus-face efs-cu zenirc-autoloads xemacs-devel-autoloads xemacs-base-autoloads w3-autoloads vm-autoloads viper-autoloads view-process-autoloads vc-cc-autoloads vc-autoloads tramp-autoloads time-autoloads textools-autoloads text-modes-autoloads texinfo-autoloads strokes-autoloads speedbar-autoloads sounds-wav-autoloads slider-autoloads sh-script-autoloads sgml-autoloads semantic-autoloads scheme-autoloads reftex-autoloads psgml-autoloads prog-modes-autoloads pcomplete-autoloads pcl-cvs-autoloads pc-autoloads os-utils-autoloads net-utils-autoloads misc-games-autoloads mailcrypt-autoloads mail-lib-autoloads ispell-autoloads ilisp-autoloads igrep-autoloads hm--html-menus-autoloads gnus-autoloads fsf-compat-autoloads frame-icon-autoloads forms-autoloads footnote-autoloads eudc-autoloads eterm-autoloads eshell-autoloads emerge-autoloads elib-autoloads eieio-autoloads efs-autoloads edt-autoloads edit-utils-autoloads ediff-autoloads edebug-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 lisp-autoloads loadhist auto-show fontl-hooks code-cmds gutter-items menubar-items x-menubar dragdrop mode-motion mouse itimer auto-save lisp-mode easymenu iso8859-1 page buff-menu lib-complete help-nomule 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 mswindows-scrollbars mswindows tty-frames tty toolbar native-sound 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 cygwin32 dragdrop-api dialog devices window-system base64) Recent keystrokes: ----------------- m u l t i - l i n e SPC c o m m e n t SPC f o r SPC y o u r SPC BS BS SPC t o SPC t r y SPC r e f o r m a t t i n g SPC w i t h SPC M - q . SPC D o e s SPC i t SPC w o r k ? M-q C-a M-x x e TAB s u TAB BS BS b TAB BS BS BS BS BS BS BS BS e m TAB C-g misc-use r Recent messages (most recent first): ----------------------------------- Loading xemacsbug...done Quit Loading xemacsbug... Making completion list... Args out of range: #<buffer "assertions.hh">, 0, 2 Loading cc-mode...done Loading cc-mode... Making completion list... Loading font-lock...done Loading font-lock... f10 not defined. Scanning for "hard" Perl constructions... done Scanning for "hard" Perl constructions... Loading cperl-mode...done Loading cus-face...done Loading cus-face... Loading cperl-mode... post_putback.pl has auto save data; consider M-x recover-file Loading efs-cu...done -- Steven E. Harris :: seharris(a)raytheon.com Raytheon:: http://www.raytheon.com