-;; Map delete and backspace
-(define-key function-key-map [backspace] "\177")
-(define-key function-key-map [delete] "\C-d")
-(define-key function-key-map [M-backspace] [?\M-\177])
-(define-key function-key-map [C-M-backspace] [\C-\M-delete])
-
-;; Ignore case on file-name completion
-(setq completion-ignore-case t)
+;;;; Function keys
+
+(defvar x-alternatives-map
+ (let ((map (make-sparse-keymap)))
+ ;; Map certain keypad keys into ASCII characters that people usually expect.
+ (define-key map [backspace] [127])
+ (define-key map [delete] [127])
+ (define-key map [tab] [?\t])
+ (define-key map [linefeed] [?\n])
+ (define-key map [clear] [?\C-l])
+ (define-key map [return] [?\C-m])
+ (define-key map [escape] [?\e])
+ (define-key map [M-backspace] [?\M-\d])
+ (define-key map [M-delete] [?\M-\d])
+ (define-key map [M-tab] [?\M-\t])
+ (define-key map [M-linefeed] [?\M-\n])
+ (define-key map [M-clear] [?\M-\C-l])
+ (define-key map [M-return] [?\M-\C-m])
+ (define-key map [M-escape] [?\M-\e])
+ (define-key map [iso-lefttab] [backtab])
+ (define-key map [S-iso-lefttab] [backtab])
+ (define-key map [S-tab] [backtab])
+ map)
+ "Keymap of possible alternative meanings for some keys.")
+
+(defun x-setup-function-keys (frame)
+ "Set up `function-key-map' on FRAME for w32."
+ ;; Don't do this twice on the same display, or it would break
+ ;; normal-erase-is-backspace-mode.
+ (unless (terminal-parameter frame 'x-setup-function-keys)
+ ;; Map certain keypad keys into ASCII characters that people usually expect.
+ (with-selected-frame frame
+ (let ((map (copy-keymap x-alternatives-map)))
+ (set-keymap-parent map (keymap-parent local-function-key-map))
+ (set-keymap-parent local-function-key-map map)))
+ (set-terminal-parameter frame 'x-setup-function-keys t)))
+
+(declare-function set-message-beep "w32console.c")
+(declare-function w32-get-clipboard-data "w32select.c")
+(declare-function w32-get-locale-info "w32proc.c")
+(declare-function w32-get-valid-locale-ids "w32proc.c")
+(declare-function w32-set-clipboard-data "w32select.c")