bug#3720: Fwd: [Aquamacs-bugs] 23.1.50; Duplicate events for C-<tab> keystroke

Package: emacs,ns

Verified with Emacs 23 from CVS (May 16), the report below is with a  
newer build.

Begin forwarded message:

> From: Aaron Crane <[email protected]>
> Date: June 28, 2009 4:29:17 PM EDT
> To: [email protected]
> Subject: [Aquamacs-bugs] 23.1.50; Duplicate events for C-<tab>  
> keystroke
>
> Hitting C-<tab> causes two C-<tab> events to be dispatched in the
> latest nightly.  To reproduce, M-x start-vanilla-aquamacs RET then, in
> the new Aquamacs, C-<tab> C-h l
>
> The view-lossage window in the new Aquamacs now contains the  
> following:
>
> <ns-application-activated> <C-tab> <C-tab> ^H L
>
> This also seems to happen for keystrokes involving Tab and Control
> and any other set of modifiers, though not for other modifier+Tab
> combinations.  It doesn't seem to happen for other keys, but I
> haven't done an exhaustive investigation.
>
> In GNU Emacs 23.1.50.1 (i386-apple-darwin9.7.0, NS apple- 
> appkit-949.46)
> of 2009-06-28 on braeburn.aquamacs.org - Aquamacs Distribution 2.0dev
> Windowing system distributor `Apple', version 10.3.949
> configured using `configure  '--with-ns' '--without-x' 'CFLAGS=-arch  
> i386 -arch ppc' 'LDFLAGS=-arch i386 -arch ppc''
>
> 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: nil
>  value of $XMODIFIERS: nil
>  locale-coding-system: nil
>  default-enable-multibyte-characters: t
>
> Major mode: Text
>
> Minor modes in effect:
>  delete-selection-mode: t
>  show-paren-mode: t
>  pc-selection-mode: t
>  savehist-mode: t
>  cua-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
>  tooltip-mode: t
>  tool-bar-mode: t
>  mouse-wheel-mode: t
>  menu-bar-mode: t
>  file-name-shadow-mode: t
>  global-font-lock-mode: t
>  font-lock-mode: t
>  blink-cursor-mode: t
>  global-auto-composition-mode: t
>  auto-composition-mode: t
>  auto-encryption-mode: t
>  auto-compression-mode: t
>  smart-spacing-mode: t
>  column-number-mode: t
>  line-number-mode: t
>  global-visual-line-mode: t
>  visual-line-mode: t
>  transient-mark-mode: t
>