bug#5560: 23.1.92; parens matching in c-mode broken

[David Reitter]

Parens matching in C mode is sometimes surprising. In the example
below, double-clicking on either of the first two opening parentheses 
will mark the text until the "     hyper_modifier : 0)", but that is correct
only for the second paren, while the first one is unmatched due to a space
following the backslash.

#define EV_MODIFIERS(e)                               \
    ((([e modifierFlags] & NSHelpKeyMask) ?           \ 
           hyper_modifier : 0)                        \    
    ...


It would be more useful if an "unmatched parentheses" was shown, or if the 
region up to the end of the scan process (i.e. the space+newline) was marked.




In GNU Emacs 23.1.92.86 (x86_64-apple-darwin10.2.0, NS apple-appkit-1038.25)
 of 2010-02-08 on scarlett.local - Aquamacs Distribution 2.0dev
Windowing system distributor `Apple', version 10.3.1038
configured using `configure  '--with-ns' 'CFLAGS=-O0 -g''

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.UTF-8
  value of $XMODIFIERS: nil
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: ObjC/l

Minor modes in effect:
  diff-auto-refine-mode: t
  which-function-mode: t
  savehist-mode: t
  smart-frame-positioning-mode: t
  aquamacs-autoface-mode: t
  recentf-mode: t
  osx-key-mode: t
  tabbar-mwheel-mode: t
  tabbar-mode: t
  show-paren-mode: t
  delete-selection-mode: t
  pc-selection-mode: t
  cua-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  transient-mark-mode: t
  abbrev-mode: t

Recent input:
<double-wheel-down> <triple-wheel-down> <wheel-down> 
<wheel-down> <double-wheel-down> <down-mouse-1> <mouse-1> 
<down-mouse-1> <mouse-movement> <mouse-movement> <drag-mouse-1> 
<kp-delete> <down> <down> <down> <S-down> <S-down> 
<S-down> <S-down> <S-down> <S-left> <S-left> <S-left> 
<S-left> <kp-delete> <kp-delete> <kp-delete> <kp-delete> 
<kp-delete> <down> <down> <A-left> <S-down> <S-down> 
<S-down> <S-down> <S-down> <kp-delete> <return> <up> 
<up> <up> <up> <up> <up> <backspace> <down> <down> 
<down> <up> <up> <up> <up> <up> <up> <up> <up> <up> 
<up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> 
<up> <up> <up> <right> | <down> <down> <down> <down> 
<down> <left> | <down> <down> <down> <down> <right> 
<down> | <kp-delete> <up> <up> <up> <up> <up> <up> 
<kp-delete> <up> <up> <up> <up> <up> <kp-delete> <up> 
<right> <S-down> <S-down> <S-down> <S-down> <S-down> 
<S-down> <S-down> <S-down> <S-down> <S-down> <S-down> 
<S-down> <S-down> <S-down> <S-down> <S-down> <S-down> 
<S-up> <S-up> ⌘X <down> <down> <down> <down> <down> 
<down> <down> <down> <down> ⌘V <up> <up> <up> <up> 
<up> <up> <up> <up> <up> <up> <up> <up> <up> <up> <up> 
<tab> <down> <tab> <down> <tab> <down> <tab> <down> 
<down> <up> <backspace> SPC \ <right> <tab> <down> 
<tab> <down> <tab> <down> <tab> <A-right> SPC \ <down> 
<A-backspace> <A-backspace> <tab> <down> <tab> <down> 
<tab> <down> <tab> <A-right> ) <backspace> <down-mouse-1> 
<mouse-1> <double-down-mouse-1> <double-mouse-1> <down-mouse-1> 
<mouse-1> <down-mouse-1> <mouse-1> <double-down-mouse-1> 
<double-mouse-1> <down-mouse-1> <mouse-1> <double-down-mouse-1> 
<double-mouse-1> <down-mouse-1> <mouse-1> <double-down-mouse-1> 
<double-mouse-1> <down-mouse-1> <mouse-1> <down-mouse-1> 
<mouse-1> <double-down-mouse-1> <double-mouse-1> <down-mouse-1> 
<mouse-1> <double-down-mouse-1> <double-mouse-1> <down-mouse-1> 
<mouse-1> <double-down-mouse-1> <double-mouse-1> <down-mouse-1> 
<mouse-1> <down-mouse-1> <mouse-movement> <mouse-movement> 
<mouse-movement> <mouse-movement> <drag-mouse-1> <down-mouse-1> 
<mouse-1> <down-mouse-1> <mouse-1> ) <backspace> <wheel-up> 
<double-wheel-up> <down-mouse-1> <mouse-1> <double-down-mouse-1> 
<double-mouse-1> <down-mouse-1> <mouse-1> <double-down-mouse-1> 
<double-mouse-1> <down-mouse-1> <mouse-1> <double-down-mouse-1> 
<double-mouse-1> <down-mouse-1> <mouse-1> <double-down-mouse-1> 
<double-mouse-1> <down-mouse-1> <mouse-1> <double-down-mouse-1> 
<double-mouse-1> <down-mouse-1> <mouse-1> <double-down-mouse-1> 
<double-mouse-1> <down-mouse-1> <mouse-1> <double-down-mouse-1> 
<double-mouse-1> <down-mouse-1> <mouse-1> <double-down-mouse-1> 
<double-mouse-1> <down-mouse-1> <mouse-1> ⌘S <escape> 
X C - M O D E <return> <down-mouse-1> <mouse-1> <double-down-mouse-1> 
<double-mouse-1> <down-mouse-1> <mouse-1> <escape> 
X <up> O B <return> ⌘S <down-mouse-1> <mouse-movement> 
<mouse-movement> <drag-mouse-1> ⌘C <menu-bar> <help-menu> 
<bug-diagnosis> <send-emacs-bug-report>

Recent messages:
Auto-saving...
Mark set [4 times]
Auto-saving...done
Auto-saving...done
Mark set
Auto-saving...done
Auto-saving...done
Saving file /Users/dr/ae.git/src/nsterm.m...
Wrote /Users/dr/ae.git/src/nsterm.m
(No changes need to be saved)

Load-path shadows:
/Users/dr/Library/Preferences/Aquamacs Emacs/Recent Files hides 
/Users/dr/Library/Preferences/Aquamacs Emacs/Aquamacs Emacs2/Recent Files
/Users/dr/Library/Preferences/Aquamacs Emacs/Preferences hides 
/Users/dr/Library/Preferences/Aquamacs Emacs/Aquamacs Emacs2/Preferences
/Users/dr/Library/Preferences/Aquamacs Emacs/places hides 
/Users/dr/Library/Preferences/Aquamacs Emacs/Aquamacs Emacs2/places
/Users/dr/Library/Preferences/Aquamacs Emacs/minibuffer-history hides 
/Users/dr/Library/Preferences/Aquamacs Emacs/Aquamacs Emacs2/minibuffer-history
/Users/dr/Library/Preferences/Aquamacs Emacs/frame-positions hides 
/Users/dr/Library/Preferences/Aquamacs Emacs/Aquamacs Emacs2/frame-positions
/Users/dr/Library/Preferences/Aquamacs Emacs/customizations hides 
/Users/dr/Library/Preferences/Aquamacs Emacs/Aquamacs Emacs2/customizations
/Library/Application Support/Aquamacs Emacs/JDEE/site-start hides 
/Library/Application Support/Aquamacs Emacs/SLIME/site-start
/Library/Application Support/Aquamacs Emacs/JDEE/cedet/speedbar/speedbar hides 
/Users/dr/ae.git/nextstep/Aquamacs.app/Contents/Resources/lisp/speedbar
/Library/Application Support/Aquamacs Emacs/JDEE/cedet/speedbar/sb-image hides 
/Users/dr/ae.git/nextstep/Aquamacs.app/Contents/Resources/lisp/sb-image
/Library/Application Support/Aquamacs Emacs/JDEE/cedet/common/ezimage hides 
/Users/dr/ae.git/nextstep/Aquamacs.app/Contents/Resources/lisp/ezimage
/Library/Application Support/Aquamacs Emacs/JDEE/cedet/speedbar/dframe hides 
/Users/dr/ae.git/nextstep/Aquamacs.app/Contents/Resources/lisp/dframe
/Library/Application Support/Aquamacs Emacs/JDEE/cedet/eieio/eieio hides 
/Users/dr/ae.git/nextstep/Aquamacs.app/Contents/Resources/lisp/emacs-lisp/eieio
/Library/Application Support/Aquamacs Emacs/JDEE/cedet/eieio/eieio-speedbar 
hides 
/Users/dr/ae.git/nextstep/Aquamacs.app/Contents/Resources/lisp/emacs-lisp/eieio-speedbar
/Library/Application Support/Aquamacs Emacs/JDEE/cedet/eieio/eieio-opt hides 
/Users/dr/ae.git/nextstep/Aquamacs.app/Contents/Resources/lisp/emacs-lisp/eieio-opt
/Library/Application Support/Aquamacs Emacs/JDEE/cedet/eieio/eieio-custom hides 
/Users/dr/ae.git/nextstep/Aquamacs.app/Contents/Resources/lisp/emacs-lisp/eieio-custom
/Library/Application Support/Aquamacs Emacs/JDEE/cedet/eieio/eieio-comp hides 
/Users/dr/ae.git/nextstep/Aquamacs.app/Contents/Resources/lisp/emacs-lisp/eieio-comp
/Library/Application Support/Aquamacs Emacs/JDEE/cedet/eieio/eieio-base hides 
/Users/dr/ae.git/nextstep/Aquamacs.app/Contents/Resources/lisp/emacs-lisp/eieio-base
/Library/Application Support/Aquamacs Emacs/JDEE/cedet/eieio/chart hides 
/Users/dr/ae.git/nextstep/Aquamacs.app/Contents/Resources/lisp/emacs-lisp/chart
/Library/Application Support/Aquamacs Emacs/JDEE/cedet/semantic/semantic hides 
/Users/dr/ae.git/nextstep/Aquamacs.app/Contents/Resources/lisp/cedet/semantic
/Library/Application Support/Aquamacs Emacs/JDEE/cedet/common/mode-local hides 
/Users/dr/ae.git/nextstep/Aquamacs.app/Contents/Resources/lisp/cedet/mode-local
/Library/Application Support/Aquamacs Emacs/JDEE/cedet/common/inversion hides 
/Users/dr/ae.git/nextstep/Aquamacs.app/Contents/Resources/lisp/cedet/inversion
/Library/Application Support/Aquamacs Emacs/JDEE/cedet/ede/ede hides 
/Users/dr/ae.git/nextstep/Aquamacs.app/Contents/Resources/lisp/cedet/ede
/Library/Application Support/Aquamacs Emacs/JDEE/cedet/common/cedet hides 
/Users/dr/ae.git/nextstep/Aquamacs.app/Contents/Resources/lisp/cedet/cedet
/Library/Application Support/Aquamacs Emacs/JDEE/cedet/common/cedet-files hides 
/Users/dr/ae.git/nextstep/Aquamacs.app/Contents/Resources/lisp/cedet/cedet-files
/Library/Application Support/Aquamacs Emacs/JDEE/site-start hides 
/Users/dr/ae.git/nextstep/Aquamacs.app/Contents/Resources/lisp/aquamacs/site-start

Features:
(shadow sort mail-extr message ecomplete rfc822 mml mml-sec
password-cache mm-decode mm-bodies mm-encode mailabbrev nnheader
gnus-util netrc gmm-utils mailheader canlock sha1 hex-util hashcash
emacsbug cc-mode cc-fonts cc-menus cc-cmds cc-styles cc-align cc-engine
cc-vars cc-defs log-edit ring pcvs-util add-log diff-mode vc
vc-dispatcher cl-specs edebug multi-isearch jka-compr find-func vc-git
url-http tls url-auth mail-parse rfc2231 rfc2047 rfc2045 qp ietf-drums
url-gw url-cache url url-proxy url-privacy url-expand url-methods
url-history url-cookie url-util url-parse url-vars mm-util mail-prsvr
mailcap mail-utils which-func imenu slime-autoloads load-emacs-plugins
aquamacs-mode-defaults auctex-config server tex-site smart-dnd
aquamacs-aux savehist mouse-sel one-buffer-one-frame
smart-frame-positioning drews_init color-theme-autoloads saveplace
visual-line aquamacs-bug aquamacs-autoface-mode aquamacs-editing
sendmail recentf tree-widget cus-edit osxkeys emulate-mac-keyboard-mode
frame-cmds strings misc-fns thingatpt+ thingatpt frame-fns avoid
aquamacs-mac-fontsets fit-frame aquamacs-frame-setup aquamacs-tabbar
tabbar-window cl cl-19 tabbar easy-mmode cus-start cus-load
load-emacs-pre-plugins aquamacs-site-start cocoa-compatibility filladapt
aquamacs-redo check-for-updates aquamacs-menu osx_defaults
aquamacs-tool-bar aquamacs mac-extra-functions aquamacs-tools
aquamacs-macros parse-time timezone time-date paren delsel pc-select
cua-base wid-edit regexp-opt advice advice-preload byte-opt bytecomp
byte-compile debug help-fns help-mode view image-file disp-table tooltip
ediff-hook vc-hooks lisp-float-type mwheel ns-win easymenu tool-bar dnd
fontset image fringe lisp-mode register page menu-bar rfn-eshadow timer
select scroll-bar mldrag mouse jit-lock font-lock syntax facemenu
font-core frame cham georgian utf-8-lang misc-lang vietnamese tibetan
thai tai-viet lao korean japanese hebrew greek romanian slovak czech
european ethiopic indian cyrillic chinese case-table epa-hook
jka-cmpr-hook help simple abbrev loaddefs button minibuffer faces
cus-face files text-properties overlay md5 base64 format env code-pages
mule custom widget hashtable-print-readable backquote
make-network-process ns multi-tty emacs)

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