Babcore: Emacs Customizations everyone should have

(defun show-frame (&optional frame)
  "Show the current Emacs frame or the FRAME given as argument.

And make sure that it really shows up!"
  (raise-frame)
  ; yes, you have to call this twice. Don’t ask me why…
  ; select-frame-set-input-focus calls x-focus-frame and does a bit of
  ; additional magic.
  (select-frame-set-input-focus (selected-frame))
  (select-frame-set-input-focus (selected-frame)))

;; let emacs blink when something interesting happens.
;; in KDE this marks the active Emacs icon in the tray.
(defun x-urgency-hint (frame arg &optional source)
  "Set the x-urgency hint for the frame to arg: 

- If arg is nil, unset the urgency.
- If arg is any other value, set the urgency.

If you unset the urgency, you still have to visit the frame to make the urgency setting disappear (at least in KDE)."
    (let* ((wm-hints (append (x-window-property 
                "WM_HINTS" frame "WM_HINTS" source nil t) nil))
     (flags (car wm-hints)))
    (setcar wm-hints
        (if arg
        (logior flags #x100)
          (logand flags (lognot #x100))))
    (x-change-window-property "WM_HINTS" wm-hints frame "WM_HINTS" 32 t)))

(defun x-urgent (&optional arg)
  "Mark the current emacs frame as requiring urgent attention. 

With a prefix argument which does not equal a boolean value of nil, remove the urgency flag (which might or might not change display, depending on the window manager)."
  (interactive "P")
  (let (frame (selected-frame))
  (x-urgency-hint frame (not arg))))

; fullscreen, taken from http://www.emacswiki.org/emacs/FullScreen#toc26
; should work for X und OSX with emacs 23.x (TODO find minimum version).
; for windows it uses (w32-send-sys-command #xf030) (#xf030 == 61488)
(defvar babcore-fullscreen-p nil
  "Check if fullscreen is on or off")
(defvar babcore-stored-frame-width nil 
  "width of the frame before going fullscreen")
(defvar babcore-stored-frame-height nil
  "width of the frame before going fullscreen")

(defun babcore-non-fullscreen ()
  (interactive)
  (if (fboundp 'w32-send-sys-command)
      ;; WM_SYSCOMMAND restore #xf120
      (w32-send-sys-command 61728)
    (progn (set-frame-parameter nil 'fullscreen nil)
           (set-frame-parameter nil 'width 
                                (if babcore-stored-frame-width
                                    babcore-stored-frame-width 82))
           (sleep-for 0 1) ; 1ms sleep: workaround to avoid unsetting the width in the next command
           (set-frame-parameter nil 'height
                                (if babcore-stored-frame-height 
                                    babcore-stored-frame-height 42)))))

(defun babcore-fullscreen ()
  (interactive)
  (setq babcore-stored-frame-width (frame-width))
  (setq babcore-stored-frame-height (frame-height))
  (if (fboundp 'w32-send-sys-command)
      ;; WM_SYSCOMMAND maximaze #xf030
      (w32-send-sys-command 61488)
    (set-frame-parameter nil 'fullscreen 'fullboth)))

(defun toggle-fullscreen ()
  (interactive)
  (setq babcore-fullscreen-p (not babcore-fullscreen-p))
  (if babcore-fullscreen-p
      (babcore-non-fullscreen)
    (babcore-fullscreen)))

(global-set-key [f11] 'toggle-fullscreen)

; Default KDE keybindings to make emacs nicer integrated into KDE. 

; can treat C-m as its own mapping.
; (define-key input-decode-map "\C-m" [?\C-1])

(defun revert-buffer-preserve-modes ()
  (interactive)
  (revert-buffer t nil t))

; C-m shows/hides the menu bar - thanks to http://stackoverflow.com/questions/2298811/how-to-turn-off-alternative-enter-with-ctrlm-in-linux
; f5 reloads
(defconst kde-default-keys-minor-mode-map
  (let ((map (make-sparse-keymap)))
    (set-keymap-parent map text-mode-map)
    (define-key map [f5] 'revert-buffer-preserve-modes)
    (define-key map [?\C-1] 'menu-bar-mode)
    (define-key map [?\C-+] 'text-scale-increase)
    (define-key map [?\C--] 'text-scale-decrease) ; shadows 'negative-argument which is also available via M-- and C-M--, though.
    (define-key map [C-kp-add] 'text-scale-increase)
    (define-key map [C-kp-subtract] 'text-scale-decrease)
    map)
  "Keymap for `kde-default-keys-minor-mode'.")

;; Minor mode for keypad control
(define-minor-mode kde-default-keys-minor-mode
  "Adds some default KDE keybindings"
  :global t
  :init-value t
  :lighter ""
  :keymap 'kde-default-keys-minor-mode-map
  )

;; Set the frame title as by http://www.emacswiki.org/emacs/FrameTitle
(setq frame-title-format (list "%b ☺ " (user-login-name) "@" (system-name) "%[ - GNU %F " emacs-version)
      icon-title-format (list "%b ☻ " (user-login-name) "@" (system-name) " - GNU %F " emacs-version))

; save the place in files
(require 'saveplace)
(setq-default save-place t)

; save minibuffer history
(require 'savehist)
;; increase the default history cutoff
(setq history-length 500)
(savehist-mode t)
(setq savehist-additional-variables
      '(regexp-search-ring
        register-alist))

;; Make comint recognize passwords in virtually all languages.
(defcustom comint-password-prompt-regexp
  (concat
   "\\(^ *\\|"
   (regexp-opt
    '("Enter" "enter" "Enter same" "enter same" "Enter the" "enter the"
      "Old" "old" "New" "new" "'s" "login"
      "Kerberos" "CVS" "UNIX" " SMB" "LDAP" "[sudo]" "Repeat" "Bad") t)
   " +\\)"
   (regexp-opt
    '("Adgangskode" "adgangskode" "Contrasenya" "contrasenya" "Contraseña" "contraseña" "Geslo" "geslo" "Hasło" "hasło" "Heslo" "heslo" "Iphasiwedi" "iphasiwedi" "Jelszó" "jelszó" "Lozinka" "lozinka" "Lösenord" "lösenord" "Mot de passe " "Mot de Passe " "mot de Passe " "mot de passe " "Mật khẩu " "mật khẩu" "Parola" "parola" "Pasahitza" "pasahitza" "Pass phrase" "pass Phrase" "pass phrase" "Passord" "passord" "Passphrase" "passphrase" "Password" "password" "Passwort" "passwort" "Pasvorto" "pasvorto" "Response" "response" "Salasana" "salasana" "Senha" "senha" "Wachtwoord" "wachtwoord" "slaptažodis" "slaptažodis" "Лозинка" "лозинка" "Пароль" "пароль" "ססמה" "كلمة السر" "गुप्तशब्द" "शब्दकूट" "গুপ্তশব্দ" "পাসওয়ার্ড" "ਪਾਸਵਰਡ" "પાસવર્ડ" "ପ୍ରବେଶ ସଙ୍କେତ" "கடவுச்சொல்" "సంకేతపదము" "ಗುಪ್ತಪದ" "അടയാളവാക്ക്" "රහස්පදය" "ពាក្យសម្ងាត់ ៖ " "パスワード" "密码" "密碼" "암호"))
   "\\(?:\\(?:, try\\)? *again\\| (empty for no passphrase)\\| (again)\\)?\
\\(?: for [^:]+\\)?:\\s *\\'")
  "Regexp matching prompts for passwords in the inferior process.
This is used by `comint-watch-for-password-prompt'."
  :version "24.3"
  :type 'regexp
  :group 'comint)

;; Mark all AC_* and AS_* functions as builtin.
(add-hook 'autoconf-mode-hook 
          (lambda () 
            (add-to-list 'autoconf-font-lock-keywords '("\\(\\(AC\\|AS\\|AM\\)_.+?\\)\\((\\|\n\\)" (1 font-lock-builtin-face)))))

; tell emacs to ignore alt-gr clicks needed for M4 in the Neo Layout.
(define-key special-event-map (kbd "<key-17>") 'ignore)
(define-key special-event-map (kbd "<M-key-17>") 'ignore)

; yank-pop should yank if the last command was no yank.
(defun yank-pop (&optional arg)
  "Replace just-yanked stretch of killed text with a different stretch.
At such a time, the region contains a stretch of reinserted
previously-killed text.  `yank-pop' deletes that text and inserts in its
place a different stretch of killed text.

With no argument, the previous kill is inserted.
With argument N, insert the Nth previous kill.
If N is negative, this is a more recent kill.

The sequence of kills wraps around, so that after the oldest one
comes the newest one.

When this command inserts killed text into the buffer, it honors
`yank-excluded-properties' and `yank-handler' as described in the
doc string for `insert-for-yank-1', which see."
  (interactive "*p")
  (if (not (eq last-command 'yank))
      (yank)
    (setq this-command 'yank)
    (unless arg (setq arg 1))
    (let ((inhibit-read-only t)
          (before (< (point) (mark t))))
      (if before
          (funcall (or yank-undo-function 'delete-region) (point) (mark t))
        (funcall (or yank-undo-function 'delete-region) (mark t) (point)))
      (setq yank-undo-function nil)
      (set-marker (mark-marker) (point) (current-buffer))
      (insert-for-yank (current-kill arg))
      ;; Set the window start back where it was in the yank command,
      ;; if possible.
      (set-window-start (selected-window) yank-window-start t)
      (if before
          ;; This is like exchange-point-and-mark, but doesn't activate the mark.
          ;; It is cleaner to avoid activation, even though the command
          ;; loop would deactivate the mark because we inserted text.
          (goto-char (prog1 (mark t)
                       (set-marker (mark-marker) (point) (current-buffer))))))
    nil))

(setq visible-bell t)