Using an anonymous function to translate keys as described in the Elisp
manual at
http://www.gnu.org/software/emacs/manual/html_node/elisp/Translation-Keymaps.htmldoes
not work as expected.

Using a named function to map C-e to C-c, the Key Translation is successful:
  (progn (fset 'foo (lambda (prompt) (kbd "C-c")))
         (define-key key-translation-map (kbd "C-e") 'foo))

Using an anonymous function for another keymap binds C-e to the
lambda-defined command.
  (define-key global-map
              (kbd "C-e")
              (lambda () (interactive) (message "Inside C-e's lambda")))

But using an anonymous function for key-translation-map does not change
behavior of inputting C-e:
  (define-key key-translation-map
              (kbd "C-e")
              (lambda (prompt) (kbd "C-c")))

I find no reason why the last Elisp shouldn't define a Key Translation.
The Elisp manual section on Anonymous Functions states "Anonymous functions
are valid wherever function names are."  (
http://www.gnu.org/software/emacs/manual/html_node/elisp/Anonymous-Functions.html)







This bug report will be sent to the Bug-GNU-Emacs mailing list
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Please write in English if possible, as the Emacs maintainers
usually do not have translators for other languages.

Please describe exactly what actions triggered the bug, and
the precise symptoms of the bug.  If you can, give a recipe
starting from `emacs -Q':



If Emacs crashed, and you have the Emacs process in the gdb debugger,
please include the output from the following gdb commands:
    `bt full' and `xbacktrace'.
For information about debugging Emacs, please read the file
/home/epich/sw/emacs-24.1/install/share/emacs/24.1/etc/DEBUG.


In GNU Emacs 24.1.1 (i686-pc-linux-gnu, X toolkit, Xaw scroll bars)
 of 2012-07-07 on epich-hp
Windowing system distributor `The X.Org Foundation', version 11.0.11001000
Configured using:
 `configure '--prefix=/home/epich/sw/emacs-24.1/install''

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: Lisp Interaction

Minor modes in effect:
  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-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
C-y <return> C-y <return> C-y <up> <up> <up> <up> <up>
<up> <up> <up> <up> <up> <right> <right> <right> <right>
<right> <right> <right> <right> <right> <right> <right>
<right> <right> <right> <right> <right> <right> <right>
<right> <right> <right> <right> <right> <right> <right>
<right> <right> <right> <right> <right> <right> <right>
<right> <right> <right> C-e M-x e v a l - l a s t s
e x p <backspace> <backspace> <backspace> <backspace>
- s e x p <return> <left> <left> <left> C-e C-g <right>
<right> <right> <return> <return> ( d e f i n e - k
e y SPC k e y - t r a n s l a t i o n - m a p SPC (
k b d SPC " C - e " SPC n i l ) ) M-x e v i l <backspace>
<backspace> a l - l a s t - s e x p <return> <down-mouse-1>
<mouse-movement> <mouse-1> <right> ) <right> <right>
<right> <right> <right> <right> <backspace> <left>
<right> <right> <left> SPC M-x e v a l - l a s t -
s e x p <return> <left> <left> <left> <left> C-e <down>
<down> <down> <up> <left> <left> <down> <down> C-e
M-x e v a l - l a s t - s e x p <return> <left> <left>
<left> C-e <down> <down> <down> <down> M-x e v a l
- l a s t - s e x p <return> <left> <left> C-e C-e
<left> <left> C-e M-x r e p o r t - e m a c s - <backspace>
<backspace> <backspace> <backspace> <backspace> <backspace>
<backspace> <backspace> <backspace> <backspace> <backspace>
<backspace> <backspace> <backspace> <backspace> <down-mouse-1>
q <mouse-1> q <down-mouse-1> <mouse-1> M-x r e p o
r t - e m a c s - b u g <return>

Recent messages:
You can run the command `eval-last-sexp' with C-x C-e
(lambda nil (interactive) (message "Inside C-e's lambda"))
You can run the command `eval-last-sexp' with C-x C-e
Inside C-e's lambda
(lambda (prompt) (kbd "C-c"))
You can run the command `eval-last-sexp' with C-x C-e
Inside C-e's lambda [3 times]
delete-backward-char: Text is read-only [2 times]
Quit
Back to top level.

Load-path shadows:
None found.

Features:
(shadow sort gnus-util mail-extr emacsbug message format-spec rfc822 mml
mml-sec mm-decode mm-bodies mm-encode mail-parse rfc2231 mailabbrev
gmm-utils mailheader sendmail regexp-opt rfc2047 rfc2045 ietf-drums
mm-util mail-prsvr mail-utils help-mode easymenu view debug edmacro
kmacro time-date tooltip ediff-hook vc-hooks lisp-float-type mwheel
x-win x-dnd tool-bar dnd fontset image fringe lisp-mode register page
menu-bar rfn-eshadow timer select scroll-bar 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 minibuffer loaddefs
button faces cus-face files text-properties overlay sha1 md5 base64
format env code-pages mule custom widget hashtable-print-readable
backquote make-network-process dynamic-setting font-render-setting
x-toolkit x multi-tty emacs)