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;;; -*- mode: emacs-lisp; coding: utf-8 -*-
;;;
;;; Functions and macros for .emacs
;;;
;;; (c) 2004 Mark Wooding
;;;

;;;----- Licensing notice ---------------------------------------------------
;;;
;;; This program is free software; you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 2 of the License, or
;;; (at your option) any later version.
;;;
;;; This program is distributed in the hope that it will be useful,
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with this program; if not, write to the Free Software Foundation,
;;; Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

;;;--------------------------------------------------------------------------
;;; Check command-line.

(defvar mdw-fast-startup nil
  "Whether .emacs should optimize for rapid startup.
This may be at the expense of cool features.")
(let ((probe nil) (next command-line-args))
  (while next
    (cond ((string= (car next) "--mdw-fast-startup")
           (setq mdw-fast-startup t)
           (if probe
               (rplacd probe (cdr next))
             (setq command-line-args (cdr next))))
          (t
           (setq probe next)))
    (setq next (cdr next))))

;;;--------------------------------------------------------------------------
;;; Some general utilities.

(eval-when-compile
  (unless (fboundp 'make-regexp)
    (load "make-regexp"))
  (require 'cl))

(defmacro mdw-regexps (&rest list)
  "Turn a LIST of strings into a single regular expression at compile-time."
  (declare (indent nil)
           (debug 0))
  `',(make-regexp list))

;; Some error trapping.
;;
;; If individual bits of this file go tits-up, we don't particularly want
;; the whole lot to stop right there and then, because it's bloody annoying.

(defmacro trap (&rest forms)
  "Execute FORMS without allowing errors to propagate outside."
  (declare (indent 0)
           (debug t))
  `(condition-case err
       ,(if (cdr forms) (cons 'progn forms) (car forms))
     (error (message "Error (trapped): %s in %s"
                     (error-message-string err)
                     ',forms))))

;; Configuration reading.

(defvar mdw-config nil)
(defun mdw-config (sym)
  "Read the configuration variable named SYM."
  (unless mdw-config
    (setq mdw-config
          (flet ((replace (what with)
                   (goto-char (point-min))
                   (while (re-search-forward what nil t)
                     (replace-match with t))))
            (with-temp-buffer
              (insert-file-contents "~/.mdw.conf")
              (replace  "^[ \t]*\\(#.*\\|\\)\n" "")
              (replace (concat "^[ \t]*"
                               "\\([-a-zA-Z0-9_.]*\\)"
                               "[ \t]*=[ \t]*"
                               "\\(.*[^ \t\n]\\|\\)"
                               "[ \t]**\\(\n\\|$\\)")
                       "(\\1 . \"\\2\")\n")
              (car (read-from-string
                    (concat "(" (buffer-string) ")")))))))
  (cdr (assq sym mdw-config)))

;; Set up the load path convincingly.

(dolist (dir (append (and (boundp 'debian-emacs-flavor)
                          (list (concat "/usr/share/"
                                        (symbol-name debian-emacs-flavor)
                                        "/site-lisp")))))
  (dolist (sub (directory-files dir t))
    (when (and (file-accessible-directory-p sub)
               (not (member sub load-path)))
      (setq load-path (nconc load-path (list sub))))))

;; Is an Emacs library available?

(defun library-exists-p (name)
  "Return non-nil if NAME is an available library.
Return non-nil if NAME.el (or NAME.elc) somewhere on the Emacs
load path.  The non-nil value is the filename we found for the
library."
  (let ((path load-path) elt (foundp nil))
    (while (and path (not foundp))
      (setq elt (car path))
      (setq path (cdr path))
      (setq foundp (or (let ((file (concat elt "/" name ".elc")))
                         (and (file-exists-p file) file))
                       (let ((file (concat elt "/" name ".el")))
                         (and (file-exists-p file) file)))))
    foundp))

(defun maybe-autoload (symbol file &optional docstring interactivep type)
  "Set an autoload if the file actually exists."
  (and (library-exists-p file)
       (autoload symbol file docstring interactivep type)))

(defun mdw-kick-menu-bar (&optional frame)
  "Regenerate FRAME's menu bar so it doesn't have empty menus."
  (interactive)
  (unless frame (setq frame (selected-frame)))
  (let ((old (frame-parameter frame 'menu-bar-lines)))
    (set-frame-parameter frame 'menu-bar-lines 0)
    (set-frame-parameter frame 'menu-bar-lines old)))

;; Splitting windows.

(unless (fboundp 'scroll-bar-columns)
  (defun scroll-bar-columns (side)
    (cond ((eq side 'left) 0)
          (window-system 3)
          (t 1))))
(unless (fboundp 'fringe-columns)
  (defun fringe-columns (side)
    (cond ((not window-system) 0)
          ((eq side 'left) 1)
          (t 2))))

(defun mdw-horizontal-window-overhead ()
  "Computes the horizontal window overhead.
This is the number of columns used by fringes, scroll bars and other such
cruft."
  (if (not window-system)
      1
    (let ((tot 0))
      (dolist (what '(scroll-bar fringe))
        (dolist (side '(left right))
          (incf tot (funcall (intern (concat (symbol-name what) "-columns"))
                             side))))
      tot)))

(defun mdw-split-window-horizontally (&optional width)
  "Split a window horizontally.
Without a numeric argument, split the window approximately in
half.  With a numeric argument WIDTH, allocate WIDTH columns to
the left-hand window (if positive) or -WIDTH columns to the
right-hand window (if negative).  Space for scroll bars and
fringes is not taken out of the allowance for WIDTH, unlike
\\[split-window-horizontally]."
  (interactive "P")
  (split-window-horizontally
   (cond ((null width) nil)
         ((>= width 0) (+ width (mdw-horizontal-window-overhead)))
         ((< width 0) width))))

(defun mdw-divvy-window (&optional width)
  "Split a wide window into appropriate widths."
  (interactive "P")
  (setq width (cond (width (prefix-numeric-value width))
                    ((and window-system
                          (>= emacs-major-version 22))
                     77)
                    (t 78)))
  (let* ((win (selected-window))
         (sb-width (mdw-horizontal-window-overhead))
         (c (/ (+ (window-width) sb-width)
               (+ width sb-width))))
    (while (> c 1)
      (setq c (1- c))
      (split-window-horizontally (+ width sb-width))
      (other-window 1))
    (select-window win)))

;; Transient mark mode hacks.

(defadvice exchange-point-and-mark
    (around mdw-highlight (&optional arg) activate compile)
  "Maybe don't actually exchange point and mark.
If `transient-mark-mode' is on and the mark is inactive, then
just activate it.  A non-trivial prefix argument will force the
usual behaviour.  A trivial prefix argument (i.e., just C-u) will
activate the mark and temporarily enable `transient-mark-mode' if
it's currently off."
  (cond ((or mark-active
             (and (not transient-mark-mode) (not arg))
             (and arg (or (not (consp arg))
                          (not (= (car arg) 4)))))
         ad-do-it)
        (t
         (or transient-mark-mode (setq transient-mark-mode 'only))
         (set-mark (mark t)))))

;; Functions for sexp diary entries.

(defun mdw-weekday (l)
  "Return non-nil if `date' falls on one of the days of the week in L.
L is a list of day numbers (from 0 to 6 for Sunday through to
Saturday) or symbols `sunday', `monday', etc. (or a mixture).  If
the date stored in `date' falls on a listed day, then the
function returns non-nil."
  (let ((d (calendar-day-of-week date)))
    (or (memq d l)
        (memq (nth d '(sunday monday tuesday wednesday
                              thursday friday saturday)) l))))

(defun mdw-todo (&optional when)
  "Return non-nil today, or on WHEN, whichever is later."
  (let ((w (calendar-absolute-from-gregorian (calendar-current-date)))
        (d (calendar-absolute-from-gregorian date)))
    (if when
        (setq w (max w (calendar-absolute-from-gregorian
                        (cond
                         ((not european-calendar-style)
                          when)
                         ((> (car when) 100)
                          (list (nth 1 when)
                                (nth 2 when)
                                (nth 0 when)))
                         (t
                          (list (nth 1 when)
                                (nth 0 when)
                                (nth 2 when))))))))
    (eq w d)))

;; Fighting with Org-mode's evil key maps.

(defvar mdw-evil-keymap-keys
  '(([S-up] . [?\C-c up])
    ([S-down] . [?\C-c down])
    ([S-left] . [?\C-c left])
    ([S-right] . [?\C-c right])
    (([M-up] [?\e up]) . [C-up])
    (([M-down] [?\e down]) . [C-down])
    (([M-left] [?\e left]) . [C-left])
    (([M-right] [?\e right]) . [C-right]))
  "Defines evil keybindings to clobber in `mdw-clobber-evil-keymap'.
The value is an alist mapping evil keys (as a list, or singleton)
to good keys (in the same form).")

(defun mdw-clobber-evil-keymap (keymap)
  "Replace evil key bindings in the KEYMAP.
Evil key bindings are defined in `mdw-evil-keymap-keys'."
  (dolist (entry mdw-evil-keymap-keys)
    (let ((binding nil)
          (keys (if (listp (car entry))
                    (car entry)
                  (list (car entry))))
          (replacements (if (listp (cdr entry))
                            (cdr entry)
                          (list (cdr entry)))))
      (catch 'found
        (dolist (key keys)
          (setq binding (lookup-key keymap key))
          (when binding
            (throw 'found nil))))
      (when binding
        (dolist (key keys)
          (define-key keymap key nil))
        (dolist (key replacements)
          (define-key keymap key binding))))))

(eval-after-load "org-latex"
  '(progn
     (push '("strayman"
             "\\documentclass{strayman}
\\usepackage[utf8]{inputenc}
\\usepackage[palatino, helvetica, courier, maths=cmr]{mdwfonts}
\\usepackage[T1]{fontenc}
\\usepackage{graphicx, tikz, mdwtab, mdwmath, crypto, longtable}"
             ("\\section{%s}" . "\\section*{%s}")
             ("\\subsection{%s}" . "\\subsection*{%s}")
             ("\\subsubsection{%s}" . "\\subsubsection*{%s}")
             ("\\paragraph{%s}" . "\\paragraph*{%s}")
             ("\\subparagraph{%s}" . "\\subparagraph*{%s}"))
           org-export-latex-classes)))

(setq org-export-docbook-xslt-proc-command "xsltproc --output %o %s %i"
      org-export-docbook-xsl-fo-proc-command "fop %i.safe %o"
      org-export-docbook-xslt-stylesheet
      "/usr/share/xml/docbook/stylesheet/docbook-xsl/fo/docbook.xsl")

;;;--------------------------------------------------------------------------
;;; Mail and news hacking.

(define-derived-mode  mdwmail-mode mail-mode "[mdw] mail"
  "Major mode for editing news and mail messages from external programs.
Not much right now.  Just support for doing MailCrypt stuff."
  :syntax-table nil
  :abbrev-table nil
  (run-hooks 'mail-setup-hook))

(define-key mdwmail-mode-map [?\C-c ?\C-c] 'disabled-operation)

(add-hook 'mdwail-mode-hook
          (lambda ()
            (set-buffer-file-coding-system 'utf-8)
            (make-local-variable 'paragraph-separate)
            (make-local-variable 'paragraph-start)
            (setq paragraph-start
                  (concat "[ \t]*[-_][-_][-_]+$\\|^-- \\|-----\\|"
                          paragraph-start))
            (setq paragraph-separate
                  (concat "[ \t]*[-_][-_][-_]+$\\|^-- \\|-----\\|"
                          paragraph-separate))))

;; How to encrypt in mdwmail.

(defun mdwmail-mc-encrypt (&optional recip scm start end from sign)
  (or start
      (setq start (save-excursion
                    (goto-char (point-min))
                    (or (search-forward "\n\n" nil t) (point-min)))))
  (or end
      (setq end (point-max)))
  (mc-encrypt-generic recip scm start end from sign))

;; How to sign in mdwmail.

(defun mdwmail-mc-sign (key scm start end uclr)
  (or start
      (setq start (save-excursion
                    (goto-char (point-min))
                    (or (search-forward "\n\n" nil t) (point-min)))))
  (or end
      (setq end (point-max)))
  (mc-sign-generic key scm start end uclr))

;; Some signature mangling.

(defun mdwmail-mangle-signature ()
  (save-excursion
    (goto-char (point-min))
    (perform-replace "\n-- \n" "\n-- " nil nil nil)))
(add-hook 'mail-setup-hook 'mdwmail-mangle-signature)
(add-hook 'message-setup-hook 'mdwmail-mangle-signature)

;; Insert my login name into message-ids, so I can score replies.

(defadvice message-unique-id (after mdw-user-name last activate compile)
  "Ensure that the user's name appears at the end of the message-id string,
so that it can be used for convenient filtering."
  (setq ad-return-value (concat ad-return-value "." (user-login-name))))

;; Tell my movemail hack where movemail is.
;;
;; This is needed to shup up warnings about LD_PRELOAD.

(let ((path exec-path))
  (while path
    (let ((try (expand-file-name "movemail" (car path))))
      (if (file-executable-p try)
          (setenv "REAL_MOVEMAIL" try))
      (setq path (cdr path)))))

(eval-after-load "erc"
    '(load "~/.ercrc.el"))

;;;--------------------------------------------------------------------------
;;; Utility functions.

(or (fboundp 'line-number-at-pos)
    (defun line-number-at-pos (&optional pos)
      (let ((opoint (or pos (point))) start)
        (save-excursion
          (save-restriction
            (goto-char (point-min))
            (widen)
            (forward-line 0)
            (setq start (point))
            (goto-char opoint)
            (forward-line 0)
            (1+ (count-lines 1 (point))))))))

(defun mdw-uniquify-alist (&rest alists)
  "Return the concatenation of the ALISTS with duplicate elements removed.
The first association with a given key prevails; others are
ignored.  The input lists are not modified, although they'll
probably become garbage."
  (and alists
       (let ((start-list (cons nil nil)))
         (mdw-do-uniquify start-list
                          start-list
                          (car alists)
                          (cdr alists)))))

(defun mdw-do-uniquify (done end l rest)
  "A helper function for mdw-uniquify-alist.
The DONE argument is a list whose first element is `nil'.  It
contains the uniquified alist built so far.  The leading `nil' is
stripped off at the end of the operation; it's only there so that
DONE always references a cons cell.  END refers to the final cons
cell in the DONE list; it is modified in place each time to avoid
the overheads of `append'ing all the time.  The L argument is the
alist we're currently processing; the remaining alists are given
in REST."

  ;; There are several different cases to deal with here.
  (cond

   ;; Current list isn't empty.  Add the first item to the DONE list if
   ;; there's not an item with the same KEY already there.
   (l (or (assoc (car (car l)) done)
          (progn
            (setcdr end (cons (car l) nil))
            (setq end (cdr end))))
      (mdw-do-uniquify done end (cdr l) rest))

   ;; The list we were working on is empty.  Shunt the next list into the
   ;; current list position and go round again.
   (rest (mdw-do-uniquify done end (car rest) (cdr rest)))

   ;; Everything's done.  Remove the leading `nil' from the DONE list and
   ;; return it.  Finished!
   (t (cdr done))))

(defun date ()
  "Insert the current date in a pleasing way."
  (interactive)
  (insert (save-excursion
            (let ((buffer (get-buffer-create "*tmp*")))
              (unwind-protect (progn (set-buffer buffer)
                                     (erase-buffer)
                                     (shell-command "date +%Y-%m-%d" t)
                                     (goto-char (mark))
                                     (delete-backward-char 1)
                                     (buffer-string))
                (kill-buffer buffer))))))

(defun uuencode (file &optional name)
  "UUencodes a file, maybe calling it NAME, into the current buffer."
  (interactive "fInput file name: ")

  ;; If NAME isn't specified, then guess from the filename.
  (if (not name)
      (setq name
            (substring file
                       (or (string-match "[^/]*$" file) 0))))
  (print (format "uuencode `%s' `%s'" file name))

  ;; Now actually do the thing.
  (call-process "uuencode" file t nil name))

(defvar np-file "~/.np"
  "*Where the `now-playing' file is.")

(defun np (&optional arg)
  "Grabs a `now-playing' string."
  (interactive)
  (save-excursion
    (or arg (progn
              (goto-char (point-max))
              (insert "\nNP: ")
              (insert-file-contents np-file)))))

(defun mdw-version-< (ver-a ver-b)
  "Answer whether VER-A is strictly earlier than VER-B.
VER-A and VER-B are version numbers, which are strings containing digit
sequences separated by `.'."
  (let* ((la (mapcar (lambda (x) (car (read-from-string x)))
                     (split-string ver-a "\\.")))
         (lb (mapcar (lambda (x) (car (read-from-string x)))
                     (split-string ver-b "\\."))))
    (catch 'done
      (while t
        (cond ((null la) (throw 'done lb))
              ((null lb) (throw 'done nil))
              ((< (car la) (car lb)) (throw 'done t))
              ((= (car la) (car lb)) (setq la (cdr la) lb (cdr lb))))))))

(defun mdw-check-autorevert ()
  "Sets global-auto-revert-ignore-buffer appropriately for this buffer.
This takes into consideration whether it's been found using
tramp, which seems to get itself into a twist."
  (cond ((not (boundp 'global-auto-revert-ignore-buffer))
         nil)
        ((and (buffer-file-name)
              (fboundp 'tramp-tramp-file-p)
              (tramp-tramp-file-p (buffer-file-name)))
         (unless global-auto-revert-ignore-buffer
           (setq global-auto-revert-ignore-buffer 'tramp)))
        ((eq global-auto-revert-ignore-buffer 'tramp)
         (setq global-auto-revert-ignore-buffer nil))))

(defadvice find-file (after mdw-autorevert activate)
  (mdw-check-autorevert))
(defadvice write-file (after mdw-autorevert activate)
  (mdw-check-autorevert))

;;;--------------------------------------------------------------------------
;;; Dired hacking.

(defadvice dired-maybe-insert-subdir
    (around mdw-marked-insertion first activate)
  "The DIRNAME may be a list of directory names to insert.
Interactively, if files are marked, then insert all of them.
With a numeric prefix argument, select that many entries near
point; with a non-numeric prefix argument, prompt for listing
options."
  (interactive
   (list (dired-get-marked-files nil
                                 (and (integerp current-prefix-arg)
                                      current-prefix-arg)
                                 #'file-directory-p)
         (and current-prefix-arg
              (not (integerp current-prefix-arg))
              (read-string "Switches for listing: "
                           (or dired-subdir-switches
                               dired-actual-switches)))))
  (let ((dirs (ad-get-arg 0)))
    (dolist (dir (if (listp dirs) dirs (list dirs)))
      (ad-set-arg 0 dir)
      ad-do-it)))

;;;--------------------------------------------------------------------------
;;; URL viewing.

(defun mdw-w3m-browse-url (url &optional new-session-p)
  "Invoke w3m on the URL in its current window, or at least a different one.
If NEW-SESSION-P, start a new session."
  (interactive "sURL: \nP")
  (save-excursion
    (let ((window (selected-window)))
      (unwind-protect
          (progn
            (select-window (or (and (not new-session-p)
                                    (get-buffer-window "*w3m*"))
                               (progn
                                 (if (one-window-p t) (split-window))
                                 (get-lru-window))))
            (w3m-browse-url url new-session-p))
        (select-window window)))))

(defvar mdw-good-url-browsers
  '(browse-url-generic
    (w3m . mdw-w3m-browse-url)
    browse-url-w3
    browse-url-mozilla)
  "List of good browsers for mdw-good-url-browsers.
Each item is a browser function name, or a cons (CHECK . FUNC).
A symbol FOO stands for (FOO . FOO).")

(defun mdw-good-url-browser ()
  "Return a good URL browser.
Trundle the list of such things, finding the first item for which
CHECK is fboundp, and returning the correponding FUNC."
  (let ((bs mdw-good-url-browsers) b check func answer)
    (while (and bs (not answer))
      (setq b (car bs)
            bs (cdr bs))
      (if (consp b)
          (setq check (car b) func (cdr b))
        (setq check b func b))
      (if (fboundp check)
          (setq answer func)))
    answer))

(eval-after-load "w3m-search"
  '(progn
     (dolist
         (item
          '(("g" "Google" "http://www.google.co.uk/search?q=%s")
            ("gd" "Google Directory"
             "http://www.google.com/search?cat=gwd/Top&q=%s")
            ("gg" "Google Groups" "http://groups.google.com/groups?q=%s")
            ("ward" "Ward's wiki" "http://c2.com/cgi/wiki?%s")
            ("gi" "Images" "http://images.google.com/images?q=%s")
            ("rfc" "RFC"
             "http://metalzone.distorted.org.uk/ftp/pub/mirrors/rfc/rfc%s.txt.gz")
            ("wp" "Wikipedia"
             "http://en.wikipedia.org/wiki/Special:Search?go=Go&search=%s")
            ("imdb" "IMDb" "http://www.imdb.com/Find?%s")
            ("nc-wiki" "nCipher wiki"
             "http://wiki.ncipher.com/wiki/bin/view/Devel/?topic=%s")
            ("map" "Google maps" "http://maps.google.co.uk/maps?q=%s&hl=en")
            ("lp" "Launchpad bug by number"
             "https://bugs.launchpad.net/bugs/%s")
            ("lppkg" "Launchpad bugs by package"
             "https://bugs.launchpad.net/%s")
            ("msdn" "MSDN"
             "http://social.msdn.microsoft.com/Search/en-GB/?query=%s&ac=8")
            ("debbug" "Debian bug by number"
             "http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=%s")
            ("debbugpkg" "Debian bugs by package"
             "http://bugs.debian.org/cgi-bin/pkgreport.cgi?pkg=%s")
            ("ljlogin" "LJ login" "http://www.livejournal.com/login.bml")))
       (add-to-list 'w3m-search-engine-alist
                    (list (cadr item) (caddr item) nil))
       (add-to-list 'w3m-uri-replace-alist
                    (list (concat "\\`" (car item) ":")
                          'w3m-search-uri-replace
                          (cadr item))))))

;;;--------------------------------------------------------------------------
;;; Paragraph filling.

;; Useful variables.

(defvar mdw-fill-prefix nil
  "*Used by `mdw-line-prefix' and `mdw-fill-paragraph'.
If there's no fill prefix currently set (by the `fill-prefix'
variable) and there's a match from one of the regexps here, it
gets used to set the fill-prefix for the current operation.

The variable is a list of items of the form `REGEXP . PREFIX'; if
the REGEXP matches, the PREFIX is used to set the fill prefix.
It in turn is a list of things:

  STRING -- insert a literal string
  (match . N) -- insert the thing matched by bracketed subexpression N
  (pad . N) -- a string of whitespace the same width as subexpression N
  (expr . FORM) -- the result of evaluating FORM")

(make-variable-buffer-local 'mdw-fill-prefix)

(defvar mdw-hanging-indents
  (concat "\\(\\("
            "\\([*o+]\\|-[-#]?\\|[0-9]+\\.\\|\\[[0-9]+\\]\\|([a-zA-Z])\\)"
            "[ \t]+"
          "\\)?\\)")
  "*Standard regexp matching parts of a hanging indent.
This is mainly useful in `auto-fill-mode'.")

;; Setting things up.

(fset 'mdw-do-auto-fill (symbol-function 'do-auto-fill))

;; Utility functions.

(defun mdw-maybe-tabify (s)
  "Tabify or untabify the string S, according to `indent-tabs-mode'."
  (let ((tabfun (if indent-tabs-mode #'tabify #'untabify)))
    (with-temp-buffer
      (save-match-data
        (insert s "\n")
        (let ((start (point-min)) (end (point-max)))
          (funcall tabfun (point-min) (point-max))
          (setq s (buffer-substring (point-min) (1- (point-max)))))))))

(defun mdw-examine-fill-prefixes (l)
  "Given a list of dynamic fill prefixes, pick one which matches
context and return the static fill prefix to use.  Point must be
at the start of a line, and match data must be saved."
  (cond ((not l) nil)
               ((looking-at (car (car l)))
                (mdw-maybe-tabify (apply #'concat
                                         (mapcar #'mdw-do-prefix-match
                                                 (cdr (car l))))))
               (t (mdw-examine-fill-prefixes (cdr l)))))

(defun mdw-maybe-car (p)
  "If P is a pair, return (car P), otherwise just return P."
  (if (consp p) (car p) p))

(defun mdw-padding (s)
  "Return a string the same width as S but made entirely from whitespace."
  (let* ((l (length s)) (i 0) (n (make-string l ? )))
    (while (< i l)
      (if (= 9 (aref s i))
          (aset n i 9))
      (setq i (1+ i)))
    n))

(defun mdw-do-prefix-match (m)
  "Expand a dynamic prefix match element.
See `mdw-fill-prefix' for details."
  (cond ((not (consp m)) (format "%s" m))
           ((eq (car m) 'match) (match-string (mdw-maybe-car (cdr m))))
           ((eq (car m) 'pad) (mdw-padding (match-string
                                            (mdw-maybe-car (cdr m)))))
           ((eq (car m) 'eval) (eval (cdr m)))
           (t "")))

(defun mdw-choose-dynamic-fill-prefix ()
  "Work out the dynamic fill prefix based on the variable `mdw-fill-prefix'."
  (cond ((and fill-prefix (not (string= fill-prefix ""))) fill-prefix)
           ((not mdw-fill-prefix) fill-prefix)
           (t (save-excursion
                (beginning-of-line)
                (save-match-data
                  (mdw-examine-fill-prefixes mdw-fill-prefix))))))

(defun do-auto-fill ()
  "Handle auto-filling, working out a dynamic fill prefix in the
case where there isn't a sensible static one."
  (let ((fill-prefix (mdw-choose-dynamic-fill-prefix)))
    (mdw-do-auto-fill)))

(defun mdw-fill-paragraph ()
  "Fill paragraph, getting a dynamic fill prefix."
  (interactive)
  (let ((fill-prefix (mdw-choose-dynamic-fill-prefix)))
    (fill-paragraph nil)))

(defun mdw-standard-fill-prefix (rx &optional mat)
  "Set the dynamic fill prefix, handling standard hanging indents and stuff.
This is just a short-cut for setting the thing by hand, and by
design it doesn't cope with anything approximating a complicated
case."
  (setq mdw-fill-prefix
           `((,(concat rx mdw-hanging-indents)
              (match . 1)
              (pad . ,(or mat 2))))))

;;;--------------------------------------------------------------------------
;;; Other common declarations.

;; Common mode settings.

(defvar mdw-auto-indent t
  "Whether to indent automatically after a newline.")

(defun mdw-whitespace-mode (&optional arg)
  "Turn on/off whitespace mode, but don't highlight trailing space."
  (interactive "P")
  (when (and (boundp 'whitespace-style)
             (fboundp 'whitespace-mode))
    (let ((whitespace-style (remove 'trailing whitespace-style)))
      (whitespace-mode arg))
    (setq show-trailing-whitespace whitespace-mode)))

(defun mdw-misc-mode-config ()
  (and mdw-auto-indent
       (cond ((eq major-mode 'lisp-mode)
              (local-set-key "\C-m" 'mdw-indent-newline-and-indent))
             ((or (eq major-mode 'slime-repl-mode)
                  (eq major-mode 'asm-mode))
              nil)
             (t
              (local-set-key "\C-m" 'newline-and-indent))))
  (local-set-key [C-return] 'newline)
  (make-local-variable 'page-delimiter)
  (setq page-delimiter "\f\\|^.*-\\{6\\}.*$")
  (setq comment-column 40)
  (auto-fill-mode 1)
  (setq fill-column 77)
  (setq show-trailing-whitespace t)
  (mdw-whitespace-mode 1)
  (and (fboundp 'gtags-mode)
       (gtags-mode))
  (if (fboundp 'hs-minor-mode)
      (trap (hs-minor-mode t))
    (outline-minor-mode t))
  (reveal-mode t)
  (trap (turn-on-font-lock)))

(defun mdw-post-config-mode-hack ()
  (mdw-whitespace-mode 1))

(eval-after-load 'gtags
  '(progn
     (dolist (key '([mouse-2] [mouse-3]))
       (define-key gtags-mode-map key nil))
     (define-key gtags-mode-map [C-S-mouse-2] 'gtags-find-tag-by-event)
     (define-key gtags-select-mode-map [C-S-mouse-2]
       'gtags-select-tag-by-event)
     (dolist (map (list gtags-mode-map gtags-select-mode-map))
       (define-key map [C-S-mouse-3] 'gtags-pop-stack))))

;; Backup file handling.

(defvar mdw-backup-disable-regexps nil
  "*List of regular expressions: if a file name matches any of
these then the file is not backed up.")

(defun mdw-backup-enable-predicate (name)
  "[mdw]'s default backup predicate.
Allows a backup if the standard predicate would allow it, and it
doesn't match any of the regular expressions in
`mdw-backup-disable-regexps'."
  (and (normal-backup-enable-predicate name)
       (let ((answer t) (list mdw-backup-disable-regexps))
         (save-match-data
           (while list
             (if (string-match (car list) name)
                 (setq answer nil))
             (setq list (cdr list)))
           answer))))
(setq backup-enable-predicate 'mdw-backup-enable-predicate)

;; Frame cleanup.

(defun mdw-last-one-out-turn-off-the-lights (frame)
  "Disconnect from an X display if this was the last frame on that display."
  (let ((frame-display (frame-parameter frame 'display)))
    (when (and frame-display
               (eq window-system 'x)
               (not (some (lambda (fr)
                            (and (not (eq fr frame))
                                 (string= (frame-parameter fr 'display)
                                          frame-display)))
                          (frame-list))))
      (run-with-idle-timer 0 nil #'x-close-connection frame-display))))
(add-hook 'delete-frame-functions 'mdw-last-one-out-turn-off-the-lights)

;;;--------------------------------------------------------------------------
;;; General fontification.

(defmacro mdw-define-face (name &rest body)
  "Define a face, and make sure it's actually set as the definition."
  (declare (indent 1)
           (debug 0))
  `(progn
     (make-face ',name)
     (defvar ,name ',name)
     (put ',name 'face-defface-spec ',body)
     (face-spec-set ',name ',body nil)))

(mdw-define-face default
  (((type w32)) :family "courier new" :height 85)
  (((type x)) :family "6x13" :foundry "trad" :height 130)
  (((type color)) :foreground "white" :background "black")
  (t nil))
(mdw-define-face fixed-pitch
  (((type w32)) :family "courier new" :height 85)
  (((type x)) :family "6x13" :foundry "trad" :height 130)
  (t :foreground "white" :background "black"))
(if (>= emacs-major-version 23)
    (mdw-define-face variable-pitch
      (((type x)) :family "sans" :height 100))
  (mdw-define-face variable-pitch
    (((type x)) :family "helvetica" :height 90)))
(mdw-define-face region
  (((type tty) (class color)) :background "blue")
  (((type tty) (class mono)) :inverse-video t)
  (t :background "grey30"))
(mdw-define-face minibuffer-prompt
  (t :weight bold))
(mdw-define-face mode-line
  (((class color)) :foreground "blue" :background "yellow"
                   :box (:line-width 1 :style released-button))
  (t :inverse-video t))
(mdw-define-face mode-line-inactive
  (((class color)) :foreground "yellow" :background "blue"
                   :box (:line-width 1 :style released-button))
  (t :inverse-video t))
(mdw-define-face scroll-bar
  (t :foreground "black" :background "lightgrey"))
(mdw-define-face fringe
  (t :foreground "yellow"))
(mdw-define-face show-paren-match
  (((class color)) :background "darkgreen")
  (t :underline t))
(mdw-define-face show-paren-mismatch
  (((class color)) :background "red")
  (t :inverse-video t))
(mdw-define-face highlight
  (((type x) (class color)) :background "DarkSeaGreen4")
  (((type tty) (class color)) :background "cyan")
  (t :inverse-video t))

(mdw-define-face holiday-face
  (t :background "red"))
(mdw-define-face calendar-today-face
  (t :foreground "yellow" :weight bold))

(mdw-define-face comint-highlight-prompt
  (t :weight bold))
(mdw-define-face comint-highlight-input
  (t nil))

(mdw-define-face dired-directory
  (t :foreground "cyan" :weight bold))
(mdw-define-face dired-symlink
  (t :foreground "cyan"))
(mdw-define-face dired-perm-write
  (t nil))

(mdw-define-face trailing-whitespace
  (((class color)) :background "red")
  (t :inverse-video t))
(mdw-define-face mdw-punct-face
  (((type tty)) :foreground "yellow") (t :foreground "burlywood2"))
(mdw-define-face mdw-number-face
  (t :foreground "yellow"))
(mdw-define-face font-lock-function-name-face
  (t :slant italic))
(mdw-define-face font-lock-keyword-face
  (t :weight bold))
(mdw-define-face font-lock-constant-face
  (t :slant italic))
(mdw-define-face font-lock-builtin-face
  (t :weight bold))
(mdw-define-face font-lock-type-face
  (t :weight bold :slant italic))
(mdw-define-face font-lock-reference-face
  (t :weight bold))
(mdw-define-face font-lock-variable-name-face
  (t :slant italic))
(mdw-define-face font-lock-comment-delimiter-face
  (((class mono)) :weight bold)
  (((type tty) (class color)) :foreground "green")
  (t :slant italic :foreground "SeaGreen1"))
(mdw-define-face font-lock-comment-face
  (((class mono)) :weight bold)
  (((type tty) (class color)) :foreground "green")
  (t :slant italic :foreground "SeaGreen1"))
(mdw-define-face font-lock-string-face
  (((class mono)) :weight bold)
  (((class color)) :foreground "SkyBlue1"))

(mdw-define-face message-separator
  (t :background "red" :foreground "white" :weight bold))
(mdw-define-face message-cited-text
  (default :slant italic)
  (((type tty)) :foreground "green") (t :foreground "SeaGreen1"))
(mdw-define-face message-header-cc
  (default :weight bold)
  (((type tty)) :foreground "green") (t :foreground "SeaGreen1"))
(mdw-define-face message-header-newsgroups
  (default :weight bold)
  (((type tty)) :foreground "green") (t :foreground "SeaGreen1"))
(mdw-define-face message-header-subject
  (default :weight bold)
  (((type tty)) :foreground "green") (t :foreground "SeaGreen1"))
(mdw-define-face message-header-to
  (default :weight bold)
  (((type tty)) :foreground "green") (t :foreground "SeaGreen1"))
(mdw-define-face message-header-xheader
  (default :weight bold)
  (((type tty)) :foreground "green") (t :foreground "SeaGreen1"))
(mdw-define-face message-header-other
  (default :weight bold)
  (((type tty)) :foreground "green") (t :foreground "SeaGreen1"))
(mdw-define-face message-header-name
  (((type tty)) :foreground "green") (t :foreground "SeaGreen1"))
(mdw-define-face which-func
  (t nil))

(mdw-define-face diff-header
  (t nil))
(mdw-define-face diff-index
  (t :weight bold))
(mdw-define-face diff-file-header
  (t :weight bold))
(mdw-define-face diff-hunk-header
  (t :foreground "SkyBlue1"))
(mdw-define-face diff-function
  (t :foreground "SkyBlue1" :weight bold))
(mdw-define-face diff-header
  (t :background "grey10"))
(mdw-define-face diff-added
  (t :foreground "green"))
(mdw-define-face diff-removed
  (t :foreground "red"))
(mdw-define-face diff-context
  (t nil))
(mdw-define-face diff-refine-change
  (((class color) (type x)) :background "RoyalBlue4")
  (t :underline t))

(mdw-define-face dylan-header-background
  (((class color) (type x)) :background "NavyBlue")
  (t :background "blue"))

(mdw-define-face magit-diff-add
  (t :foreground "green"))
(mdw-define-face magit-diff-del
  (t :foreground "red"))
(mdw-define-face magit-diff-file-header
  (t :weight bold))
(mdw-define-face magit-diff-hunk-header
  (t :foreground "SkyBlue1"))
(mdw-define-face magit-item-highlight
  (((type tty)) :background "blue")
  (t :background "DarkSeaGreen4"))

(mdw-define-face erc-input-face
  (t :foreground "red"))

(mdw-define-face woman-bold
  (t :weight bold))
(mdw-define-face woman-italic
  (t :slant italic))

(eval-after-load "rst"
  '(progn
     (mdw-define-face rst-level-1-face
       (t :foreground "SkyBlue1" :weight bold))
     (mdw-define-face rst-level-2-face
       (t :foreground "SeaGreen1" :weight bold))
     (mdw-define-face rst-level-3-face
       (t :weight bold))
     (mdw-define-face rst-level-4-face
       (t :slant italic))
     (mdw-define-face rst-level-5-face
       (t :underline t))
     (mdw-define-face rst-level-6-face
       ())))

(mdw-define-face p4-depot-added-face
  (t :foreground "green"))
(mdw-define-face p4-depot-branch-op-face
  (t :foreground "yellow"))
(mdw-define-face p4-depot-deleted-face
  (t :foreground "red"))
(mdw-define-face p4-depot-unmapped-face
  (t :foreground "SkyBlue1"))
(mdw-define-face p4-diff-change-face
  (t :foreground "yellow"))
(mdw-define-face p4-diff-del-face
  (t :foreground "red"))
(mdw-define-face p4-diff-file-face
  (t :foreground "SkyBlue1"))
(mdw-define-face p4-diff-head-face
  (t :background "grey10"))
(mdw-define-face p4-diff-ins-face
  (t :foreground "green"))

(mdw-define-face w3m-anchor-face
  (t :foreground "SkyBlue1" :underline t))
(mdw-define-face w3m-arrived-anchor-face
  (t :foreground "SkyBlue1" :underline t))

(mdw-define-face whizzy-slice-face
  (t :background "grey10"))
(mdw-define-face whizzy-error-face
  (t :background "darkred"))

;; Ellipses used to indicate hidden text (and similar).
(mdw-define-face mdw-ellipsis-face
  (((type tty)) :foreground "blue") (t :foreground "grey60"))
(let ((dollar (make-glyph-code ?$ 'mdw-ellipsis-face))
      (backslash (make-glyph-code ?\ 'mdw-ellipsis-face))
      (dot (make-glyph-code ?. 'mdw-ellipsis-face))
      (bar (make-glyph-code ?| mdw-ellipsis-face)))
  (set-display-table-slot standard-display-table 0 dollar)
  (set-display-table-slot standard-display-table 1 backslash)
  (set-display-table-slot standard-display-table 4
                          (vector dot dot dot))
  (set-display-table-slot standard-display-table 5 bar))

;;;--------------------------------------------------------------------------
;;; C programming configuration.

;; Linux kernel hacking.

(defvar linux-c-mode-hook)

(defun linux-c-mode ()
  (interactive)
  (c-mode)
  (setq major-mode 'linux-c-mode)
  (setq mode-name "Linux C")
  (run-hooks 'linux-c-mode-hook))

;; Make C indentation nice.

(defun mdw-c-lineup-arglist (langelem)
  "Hack for DWIMmery in c-lineup-arglist."
  (if (save-excursion
        (c-block-in-arglist-dwim (c-langelem-2nd-pos c-syntactic-element)))
      0
    (c-lineup-arglist langelem)))

(defun mdw-c-indent-extern-mumble (langelem)
  "Indent `extern \"...\" {' lines."
  (save-excursion
    (back-to-indentation)
    (if (looking-at
         "\\s-*\\<extern\\>\\s-*\"\\([^\\\\\"]+\\|\\.\\)*\"\\s-*{")
        c-basic-offset
      nil)))

(defun mdw-c-style ()
  (c-add-style "[mdw] C and C++ style"
               '((c-basic-offset . 2)
                 (comment-column . 40)
                 (c-class-key . "class")
                 (c-backslash-column . 72)
                 (c-offsets-alist
                  (substatement-open . (add 0 c-indent-one-line-block))
                  (defun-open . (add 0 c-indent-one-line-block))
                  (arglist-cont-nonempty . mdw-c-lineup-arglist)
                  (topmost-intro . mdw-c-indent-extern-mumble)
                  (cpp-define-intro . 0)
                  (knr-argdecl . 0)
                  (inextern-lang . [0])
                  (label . 0)
                  (case-label . +)
                  (access-label . -)
                  (inclass . +)
                  (inline-open . ++)
                  (statement-cont . +)
                  (statement-case-intro . +)))
               t))

(defvar mdw-c-comment-fill-prefix
  `((,(concat "\\([ \t]*/?\\)"
              "\\(\*\\|//]\\)"
              "\\([ \t]*\\)"
              "\\([A-Za-z]+:[ \t]*\\)?"
              mdw-hanging-indents)
     (pad . 1) (match . 2) (pad . 3) (pad . 4) (pad . 5)))
  "Fill prefix matching C comments (both kinds).")

(defun mdw-fontify-c-and-c++ ()

  ;; Fiddle with some syntax codes.
  (modify-syntax-entry ?* ". 23")
  (modify-syntax-entry ?/ ". 124b")
  (modify-syntax-entry ?\n "> b")

  ;; Other stuff.
  (mdw-c-style)
  (setq c-hanging-comment-ender-p nil)
  (setq c-backslash-column 72)
  (setq c-label-minimum-indentation 0)
  (setq mdw-fill-prefix mdw-c-comment-fill-prefix)

  ;; Now define things to be fontified.
  (make-local-variable 'font-lock-keywords)
  (let ((c-keywords
         (mdw-regexps "and"             ;C++
                      "and_eq"          ;C++
                      "asm"             ;K&R, GCC
                      "auto"            ;K&R, C89
                      "bitand"          ;C++
                      "bitor"           ;C++
                      "bool"            ;C++, C9X macro
                      "break"           ;K&R, C89
                      "case"            ;K&R, C89
                      "catch"           ;C++
                      "char"            ;K&R, C89
                      "class"           ;C++
                      "complex"         ;C9X macro, C++ template type
                      "compl"           ;C++
                      "const"           ;C89
                      "const_cast"      ;C++
                      "continue"        ;K&R, C89
                      "defined"         ;C89 preprocessor
                      "default"         ;K&R, C89
                      "delete"          ;C++
                      "do"              ;K&R, C89
                      "double"          ;K&R, C89
                      "dynamic_cast"    ;C++
                      "else"            ;K&R, C89
                      ;; "entry"        ;K&R -- never used
                      "enum"            ;C89
                      "explicit"        ;C++
                      "export"          ;C++
                      "extern"          ;K&R, C89
                      "false"           ;C++, C9X macro
                      "float"           ;K&R, C89
                      "for"             ;K&R, C89
                      ;; "fortran"      ;K&R
                      "friend"          ;C++
                      "goto"            ;K&R, C89
                      "if"              ;K&R, C89
                      "imaginary"       ;C9X macro
                      "inline"          ;C++, C9X, GCC
                      "int"             ;K&R, C89
                      "long"            ;K&R, C89
                      "mutable"         ;C++
                      "namespace"       ;C++
                      "new"             ;C++
                      "operator"        ;C++
                      "or"              ;C++
                      "or_eq"           ;C++
                      "private"         ;C++
                      "protected"       ;C++
                      "public"          ;C++
                      "register"        ;K&R, C89
                      "reinterpret_cast" ;C++
                      "restrict"         ;C9X
                      "return"           ;K&R, C89
                      "short"            ;K&R, C89
                      "signed"           ;C89
                      "sizeof"           ;K&R, C89
                      "static"           ;K&R, C89
                      "static_cast"      ;C++
                      "struct"           ;K&R, C89
                      "switch"           ;K&R, C89
                      "template"         ;C++
                      "this"             ;C++
                      "throw"            ;C++
                      "true"             ;C++, C9X macro
                      "try"              ;C++
                      "this"             ;C++
                      "typedef"          ;C89
                      "typeid"           ;C++
                      "typeof"           ;GCC
                      "typename"         ;C++
                      "union"            ;K&R, C89
                      "unsigned"         ;K&R, C89
                      "using"            ;C++
                      "virtual"          ;C++
                      "void"             ;C89
                      "volatile"         ;C89
                      "wchar_t"          ;C++, C89 library type
                      "while"            ;K&R, C89
                      "xor"              ;C++
                      "xor_eq"           ;C++
                      "_Bool"            ;C9X
                      "_Complex"         ;C9X
                      "_Imaginary"       ;C9X
                      "_Pragma"          ;C9X preprocessor
                      "__alignof__"      ;GCC
                      "__asm__"          ;GCC
                      "__attribute__"    ;GCC
                      "__complex__"      ;GCC
                      "__const__"        ;GCC
                      "__extension__"    ;GCC
                      "__imag__"         ;GCC
                      "__inline__"       ;GCC
                      "__label__"        ;GCC
                      "__real__"         ;GCC
                      "__signed__"       ;GCC
                      "__typeof__"       ;GCC
                      "__volatile__"     ;GCC
                      ))
        (preprocessor-keywords
         (mdw-regexps "assert" "define" "elif" "else" "endif" "error"
                      "ident" "if" "ifdef" "ifndef" "import" "include"
                      "line" "pragma" "unassert" "undef" "warning"))
        (objc-keywords
         (mdw-regexps "class" "defs" "encode" "end" "implementation"
                      "interface" "private" "protected" "protocol" "public"
                      "selector")))

    (setq font-lock-keywords
          (list

           ;; Fontify include files as strings.
           (list (concat "^[ \t]*\\#[ \t]*"
                         "\\(include\\|import\\)"
                         "[ \t]*\\(<[^>]+\\(>\\|\\)\\)")
                 '(2 font-lock-string-face))

           ;; Preprocessor directives are `references'?.
           (list (concat "^\\([ \t]*#[ \t]*\\(\\("
                         preprocessor-keywords
                         "\\)\\>\\|[0-9]+\\|$\\)\\)")
                 '(1 font-lock-keyword-face))

           ;; Handle the keywords defined above.
           (list (concat "@\\<\\(" objc-keywords "\\)\\>")
                 '(0 font-lock-keyword-face))

           (list (concat "\\<\\(" c-keywords "\\)\\>")
                 '(0 font-lock-keyword-face))

           ;; Handle numbers too.
           ;;
           ;; This looks strange, I know.  It corresponds to the
           ;; preprocessor's idea of what a number looks like, rather than
           ;; anything sensible.
           (list (concat "\\(\\<[0-9]\\|\\.[0-9]\\)"
                         "\\([Ee][+-]\\|[0-9A-Za-z_.]\\)*")
                 '(0 mdw-number-face))

           ;; And anything else is punctuation.
           (list "\\(\\s.\\|\\s(\\|\\s)\\|\\s\\\\|\\s/\\)"
                 '(0 mdw-punct-face))))

    (mdw-post-config-mode-hack)))

;;;--------------------------------------------------------------------------
;;; AP calc mode.

(defun apcalc-mode ()
  (interactive)
  (c-mode)
  (setq major-mode 'apcalc-mode)
  (setq mode-name "AP Calc")
  (run-hooks 'apcalc-mode-hook))

(defun mdw-fontify-apcalc ()

  ;; Fiddle with some syntax codes.
  (modify-syntax-entry ?* ". 23")
  (modify-syntax-entry ?/ ". 14")

  ;; Other stuff.
  (mdw-c-style)
  (setq c-hanging-comment-ender-p nil)
  (setq c-backslash-column 72)
  (setq comment-start "/* ")
  (setq comment-end " */")
  (setq mdw-fill-prefix mdw-c-comment-fill-prefix)

  ;; Now define things to be fontified.
  (make-local-variable 'font-lock-keywords)
  (let ((c-keywords
         (mdw-regexps "break" "case" "cd" "continue" "define" "default"
                      "do" "else" "exit" "for" "global" "goto" "help" "if"
                      "local" "mat" "obj" "print" "quit" "read" "return"
                      "show" "static" "switch" "while" "write")))

    (setq font-lock-keywords
          (list

           ;; Handle the keywords defined above.
           (list (concat "\\<\\(" c-keywords "\\)\\>")
                 '(0 font-lock-keyword-face))

           ;; Handle numbers too.
           ;;
           ;; This looks strange, I know.  It corresponds to the
           ;; preprocessor's idea of what a number looks like, rather than
           ;; anything sensible.
           (list (concat "\\(\\<[0-9]\\|\\.[0-9]\\)"
                         "\\([Ee][+-]\\|[0-9A-Za-z_.]\\)*")
                 '(0 mdw-number-face))

           ;; And anything else is punctuation.
           (list "\\(\\s.\\|\\s(\\|\\s)\\|\\s\\\\|\\s/\\)"
                 '(0 mdw-punct-face)))))

  (mdw-post-config-mode-hack))

;;;--------------------------------------------------------------------------
;;; Java programming configuration.

;; Make indentation nice.

(defun mdw-java-style ()
  (c-add-style "[mdw] Java style"
               '((c-basic-offset . 2)
                 (c-offsets-alist (substatement-open . 0)
                                  (label . +)
                                  (case-label . +)
                                  (access-label . 0)
                                  (inclass . +)
                                  (statement-case-intro . +)))
               t))

;; Declare Java fontification style.

(defun mdw-fontify-java ()

  ;; Other stuff.
  (mdw-java-style)
  (setq c-hanging-comment-ender-p nil)
  (setq c-backslash-column 72)
  (setq mdw-fill-prefix mdw-c-comment-fill-prefix)

  ;; Now define things to be fontified.
  (make-local-variable 'font-lock-keywords)
  (let ((java-keywords
         (mdw-regexps "abstract" "boolean" "break" "byte" "case" "catch"
                      "char" "class" "const" "continue" "default" "do"
                      "double" "else" "extends" "final" "finally" "float"
                      "for" "goto" "if" "implements" "import" "instanceof"
                      "int" "interface" "long" "native" "new" "package"
                      "private" "protected" "public" "return" "short"
                      "static" "super" "switch" "synchronized" "this"
                      "throw" "throws" "transient" "try" "void" "volatile"
                      "while"

                      "false" "null" "true")))

    (setq font-lock-keywords
          (list

           ;; Handle the keywords defined above.
           (list (concat "\\<\\(" java-keywords "\\)\\>")
                 '(0 font-lock-keyword-face))

           ;; Handle numbers too.
           ;;
           ;; The following isn't quite right, but it's close enough.
           (list (concat "\\<\\("
                         "0\\([xX][0-9a-fA-F]+\\|[0-7]+\\)\\|"
                         "[0-9]+\\(\\.[0-9]*\\|\\)"
                         "\\([eE]\\([-+]\\|\\)[0-9]+\\|\\)\\)"
                         "[lLfFdD]?")
                 '(0 mdw-number-face))

           ;; And anything else is punctuation.
           (list "\\(\\s.\\|\\s(\\|\\s)\\|\\s\\\\|\\s/\\)"
                 '(0 mdw-punct-face)))))

  (mdw-post-config-mode-hack))

;;;--------------------------------------------------------------------------
;;; Javascript programming configuration.

(defun mdw-javascript-style ()
  (setq js-indent-level 2)
  (setq js-expr-indent-offset 0))

(defun mdw-fontify-javascript ()

  ;; Other stuff.
  (mdw-javascript-style)
  (setq js-auto-indent-flag t)

  ;; Now define things to be fontified.
  (make-local-variable 'font-lock-keywords)
  (let ((javascript-keywords
         (mdw-regexps "abstract" "boolean" "break" "byte" "case" "catch"
                      "char" "class" "const" "continue" "debugger" "default"
                      "delete" "do" "double" "else" "enum" "export" "extends"
                      "final" "finally" "float" "for" "function" "goto" "if"
                      "implements" "import" "in" "instanceof" "int"
                      "interface" "let" "long" "native" "new" "package"
                      "private" "protected" "public" "return" "short"
                      "static" "super" "switch" "synchronized" "throw"
                      "throws" "transient" "try" "typeof" "var" "void"
                      "volatile" "while" "with" "yield"

                      "boolean" "byte" "char" "double" "float" "int" "long"
                      "short" "void"))
        (javascript-constants
         (mdw-regexps "false" "null" "undefined" "Infinity" "NaN" "true"
                      "arguments" "this")))

    (setq font-lock-keywords
          (list

           ;; Handle the keywords defined above.
           (list (concat "\\_<\\(" javascript-keywords "\\)\\_>")
                 '(0 font-lock-keyword-face))

           ;; Handle the predefined constants defined above.
           (list (concat "\\_<\\(" javascript-constants "\\)\\_>")
                 '(0 font-lock-variable-name-face))

           ;; Handle numbers too.
           ;;
           ;; The following isn't quite right, but it's close enough.
           (list (concat "\\_<\\("
                         "0\\([xX][0-9a-fA-F]+\\|[0-7]+\\)\\|"
                         "[0-9]+\\(\\.[0-9]*\\|\\)"
                         "\\([eE]\\([-+]\\|\\)[0-9]+\\|\\)\\)"
                         "[lLfFdD]?")
                 '(0 mdw-number-face))

           ;; And anything else is punctuation.
           (list "\\(\\s.\\|\\s(\\|\\s)\\|\\s\\\\|\\s/\\)"
                 '(0 mdw-punct-face)))))

  (mdw-post-config-mode-hack))

;;;--------------------------------------------------------------------------
;;; C# programming configuration.

;; Make indentation nice.

(defun mdw-csharp-style ()
  (c-add-style "[mdw] C# style"
               '((c-basic-offset . 2)
                 (c-offsets-alist (substatement-open . 0)
                                  (label . 0)
                                  (case-label . +)
                                  (access-label . 0)
                                  (inclass . +)
                                  (statement-case-intro . +)))
               t))

;; Declare C# fontification style.

(defun mdw-fontify-csharp ()

  ;; Other stuff.
  (mdw-csharp-style)
  (setq c-hanging-comment-ender-p nil)
  (setq c-backslash-column 72)
  (setq mdw-fill-prefix mdw-c-comment-fill-prefix)

  ;; Now define things to be fontified.
  (make-local-variable 'font-lock-keywords)
  (let ((csharp-keywords
         (mdw-regexps "abstract" "as" "base" "bool" "break"
                      "byte" "case" "catch" "char" "checked"
                      "class" "const" "continue" "decimal" "default"
                      "delegate" "do" "double" "else" "enum"
                      "event" "explicit" "extern" "false" "finally"
                      "fixed" "float" "for" "foreach" "goto"
                      "if" "implicit" "in" "int" "interface"
                      "internal" "is" "lock" "long" "namespace"
                      "new" "null" "object" "operator" "out"
                      "override" "params" "private" "protected" "public"
                      "readonly" "ref" "return" "sbyte" "sealed"
                      "short" "sizeof" "stackalloc" "static" "string"
                      "struct" "switch" "this" "throw" "true"
                      "try" "typeof" "uint" "ulong" "unchecked"
                      "unsafe" "ushort" "using" "virtual" "void"
                      "volatile" "while" "yield")))

    (setq font-lock-keywords
          (list

           ;; Handle the keywords defined above.
           (list (concat "\\<\\(" csharp-keywords "\\)\\>")
                 '(0 font-lock-keyword-face))

           ;; Handle numbers too.
           ;;
           ;; The following isn't quite right, but it's close enough.
           (list (concat "\\<\\("
                         "0\\([xX][0-9a-fA-F]+\\|[0-7]+\\)\\|"
                         "[0-9]+\\(\\.[0-9]*\\|\\)"
                         "\\([eE]\\([-+]\\|\\)[0-9]+\\|\\)\\)"
                         "[lLfFdD]?")
                 '(0 mdw-number-face))

           ;; And anything else is punctuation.
           (list "\\(\\s.\\|\\s(\\|\\s)\\|\\s\\\\|\\s/\\)"
                 '(0 mdw-punct-face)))))

  (mdw-post-config-mode-hack))

(define-derived-mode csharp-mode java-mode "C#"
  "Major mode for editing C# code.")

;;;--------------------------------------------------------------------------
;;; F# programming configuration.

(setq fsharp-indent-offset 2)

(defun mdw-fontify-fsharp ()

  (let ((punct "=<>+-*/|&%!@?"))
    (do ((i 0 (1+ i)))
        ((>= i (length punct)))
      (modify-syntax-entry (aref punct i) ".")))

  (modify-syntax-entry ?_ "_")
  (modify-syntax-entry ?( "(")
  (modify-syntax-entry ?) ")")

  (setq indent-tabs-mode nil)

  (let ((fsharp-keywords
         (mdw-regexps "abstract" "and" "as" "assert" "atomic"
                      "base" "begin" "break"
                      "checked" "class" "component" "const" "constraint"
                      "constructor" "continue"
                      "default" "delegate" "do" "done" "downcast" "downto"
                      "eager" "elif" "else" "end" "exception" "extern"
                      "false" "finally" "fixed" "for" "fori" "fun" "function"
                      "functor"
                      "global"
                      "if" "in" "include" "inherit" "inline" "interface"
                      "internal"
                      "lazy" "let"
                      "match" "measure" "member" "method" "mixin" "module"
                      "mutable"
                      "namespace" "new" "null"
                      "object""of" "open" "or" "override"
                      "parallel" "params" "private" "process" "protected"
                      "public" "pure"
                      "rec" "recursive" "return"
                      "sealed" "sig" "static" "struct"
                      "tailcall" "then" "to" "trait" "true" "try" "type"
                      "upcast" "use"
                      "val" "virtual" "void" "volatile"
                      "when" "while" "with"
                      "yield"))

        (fsharp-builtins
         (mdw-regexps "asr" "land" "lor" "lsl" "lsr" "lxor" "mod"))

        (bang-keywords
         (mdw-regexps "do" "let" "return" "use" "yield"))

        (preprocessor-keywords
         (mdw-regexps "if" "indent" "else" "endif")))

    (setq font-lock-keywords
          (list (list (concat "\\(^\\|[^\"]\\)"
                              "\\(" "(\\*"
                                    "[^*]*\\*+"
                                    "\\(" "[^)*]" "[^*]*" "\\*+" "\\)*"
                                    ")"
                              "\\|"
                                    "//.*"
                              "\\)")
                      '(2 font-lock-comment-face))

                (list (concat "'" "\\("
                                    "\\\\"
                                    "\\(" "[ntbr'\\]"
                                    "\\|" "[0-9][0-9][0-9]"
                                    "\\|" "u" "[0-9a-fA-F]\\{4\\}"
                                    "\\|" "U" "[0-9a-fA-F]\\{8\\}"
                                    "\\)"
                                  "\\|"
                                  "." "\\)" "'"
                              "\\|"
                              "\"" "[^\"\\]*"
                                    "\\(" "\\\\" "\\(.\\|\n\\)"
                                          "[^\"\\]*" "\\)*"
                              "\\(\"\\|\\'\\)")
                      '(0 font-lock-string-face))

                (list (concat "\\_<\\(" bang-keywords "\\)!" "\\|"
                              "^#[ \t]*\\(" preprocessor-keywords "\\)\\_>"
                              "\\|"
                              "\\_<\\(" fsharp-keywords "\\)\\_>")
                      '(0 font-lock-keyword-face))
                (list (concat "\\<\\(" fsharp-builtins "\\)\\_>")
                      '(0 font-lock-variable-name-face))

                (list (concat "\\_<"
                              "\\(" "0[bB][01]+" "\\|"
                                    "0[oO][0-7]+" "\\|"
                                    "0[xX][0-9a-fA-F]+" "\\)"
                              "\\(" "lf\\|LF" "\\|"
                                    "[uU]?[ysnlL]?" "\\)"
                              "\\|"
                              "\\_<"
                              "[0-9]+" "\\("
                                "[mMQRZING]"
                                "\\|"
                                "\\(\\.[0-9]*\\)?"
                                "\\([eE][-+]?[0-9]+\\)?"
                                "[fFmM]?"
                                "\\|"
                                "[uU]?[ysnlL]?"
                              "\\)")
                      '(0 mdw-number-face))

                (list "\\(\\s.\\|\\s(\\|\\s)\\|\\s\\\\|\\s/\\)"
                      '(0 mdw-punct-face)))))

  (mdw-post-config-mode-hack))

(defun mdw-fontify-inferior-fsharp ()
  (mdw-fontify-fsharp)
  (setq font-lock-keywords
        (append (list (list "^[#-]" '(0 font-lock-comment-face))
                      (list "^>" '(0 font-lock-keyword-face)))
                font-lock-keywords)))

;;;--------------------------------------------------------------------------
;;; Go programming configuration.

(defun mdw-fontify-go ()

  (make-local-variable 'font-lock-keywords)
  (let ((go-keywords
         (mdw-regexps "break" "case" "chan" "const" "continue"
                      "default" "defer" "else" "fallthrough" "for"
                      "func" "go" "goto" "if" "import"
                      "interface" "map" "package" "range" "return"
                      "select" "struct" "switch" "type" "var"))
        (go-intrinsics
         (mdw-regexps "bool" "byte" "complex64" "complex128" "error"
                      "float32" "float64" "int" "uint8" "int16" "int32"
                      "int64" "rune" "string" "uint" "uint8" "uint16"
                      "uint32" "uint64" "uintptr" "void"
                      "false" "iota" "nil" "true"
                      "init" "main"
                      "append" "cap" "copy" "delete" "imag" "len" "make"
                      "new" "panic" "real" "recover")))

    (setq font-lock-keywords
          (list

           ;; Handle the keywords defined above.
           (list (concat "\\<\\(" go-keywords "\\)\\>")
                 '(0 font-lock-keyword-face))
           (list (concat "\\<\\(" go-intrinsics "\\)\\>")
                 '(0 font-lock-variable-name-face))

           ;; Handle numbers too.
           ;;
           ;; The following isn't quite right, but it's close enough.
           (list (concat "\\<\\("
                         "0\\([xX][0-9a-fA-F]+\\|[0-7]+\\)\\|"
                         "[0-9]+\\(\\.[0-9]*\\|\\)"
                         "\\([eE]\\([-+]\\|\\)[0-9]+\\|\\)\\)")
                 '(0 mdw-number-face))

           ;; And anything else is punctuation.
           (list "\\(\\s.\\|\\s(\\|\\s)\\|\\s\\\\|\\s/\\)"
                 '(0 mdw-punct-face)))))

  (mdw-post-config-mode-hack))

;;;--------------------------------------------------------------------------
;;; Awk programming configuration.

;; Make Awk indentation nice.

(defun mdw-awk-style ()
  (c-add-style "[mdw] Awk style"
               '((c-basic-offset . 2)
                 (c-offsets-alist (substatement-open . 0)
                                  (statement-cont . 0)
                                  (statement-case-intro . +)))
               t))

;; Declare Awk fontification style.

(defun mdw-fontify-awk ()

  ;; Miscellaneous fiddling.
  (mdw-awk-style)
  (setq c-backslash-column 72)
  (mdw-standard-fill-prefix "\\([ \t]*#+[ \t]*\\)")

  ;; Now define things to be fontified.
  (make-local-variable 'font-lock-keywords)
  (let ((c-keywords
         (mdw-regexps "BEGIN" "END" "ARGC" "ARGIND" "ARGV" "CONVFMT"
                      "ENVIRON" "ERRNO" "FIELDWIDTHS" "FILENAME" "FNR"
                      "FS" "IGNORECASE" "NF" "NR" "OFMT" "OFS" "ORS" "RS"
                      "RSTART" "RLENGTH" "RT"   "SUBSEP"
                      "atan2" "break" "close" "continue" "cos" "delete"
                      "do" "else" "exit" "exp" "fflush" "file" "for" "func"
                      "function" "gensub" "getline" "gsub" "if" "in"
                      "index" "int" "length" "log" "match" "next" "rand"
                      "return" "print" "printf" "sin" "split" "sprintf"
                      "sqrt" "srand" "strftime" "sub" "substr" "system"
                      "systime" "tolower" "toupper" "while")))

    (setq font-lock-keywords
          (list

           ;; Handle the keywords defined above.
           (list (concat "\\<\\(" c-keywords "\\)\\>")
                 '(0 font-lock-keyword-face))

           ;; Handle numbers too.
           ;;
           ;; The following isn't quite right, but it's close enough.
           (list (concat "\\<\\("
                         "0\\([xX][0-9a-fA-F]+\\|[0-7]+\\)\\|"
                         "[0-9]+\\(\\.[0-9]*\\|\\)"
                         "\\([eE]\\([-+]\\|\\)[0-9]+\\|\\)\\)"
                         "[uUlL]*")
                 '(0 mdw-number-face))

           ;; And anything else is punctuation.
           (list "\\(\\s.\\|\\s(\\|\\s)\\|\\s\\\\|\\s/\\)"
                 '(0 mdw-punct-face)))))

  (mdw-post-config-mode-hack))

;;;--------------------------------------------------------------------------
;;; Perl programming style.

;; Perl indentation style.

(fset 'perl-mode 'cperl-mode)
(setq cperl-indent-level 2)
(setq cperl-continued-statement-offset 2)
(setq cperl-continued-brace-offset 0)
(setq cperl-brace-offset -2)
(setq cperl-brace-imaginary-offset 0)
(setq cperl-label-offset 0)

;; Define perl fontification style.

(defun mdw-fontify-perl ()

  ;; Miscellaneous fiddling.
  (modify-syntax-entry ?$ "\\")
  (modify-syntax-entry ?$ "\\" font-lock-syntax-table)
  (mdw-standard-fill-prefix "\\([ \t]*#+[ \t]*\\)")

  ;; Now define fontification things.
  (make-local-variable 'font-lock-keywords)
  (let ((perl-keywords
         (mdw-regexps "and" "break" "cmp" "continue" "do" "else" "elsif" "eq"
                      "for" "foreach" "ge" "given" "gt" "goto" "if"
                      "last" "le" "lt" "local" "my" "ne" "next" "or"
                      "our" "package" "redo" "require" "return" "sub"
                      "undef" "unless" "until" "use" "when" "while")))

    (setq font-lock-keywords
          (list

           ;; Set up the keywords defined above.
           (list (concat "\\<\\(" perl-keywords "\\)\\>")
                 '(0 font-lock-keyword-face))

           ;; At least numbers are simpler than C.
           (list (concat "\\<0\\([xX][0-9a-fA-F_]+\\|[0-7_]+\\)\\|"
                         "\\<[0-9][0-9_]*\\(\\.[0-9_]*\\|\\)"
                         "\\([eE]\\([-+]\\|\\)[0-9_]+\\|\\)")
                 '(0 mdw-number-face))

           ;; And anything else is punctuation.
           (list "\\(\\s.\\|\\s(\\|\\s)\\|\\s\\\\|\\s/\\)"
                 '(0 mdw-punct-face)))))

  (mdw-post-config-mode-hack))

(defun perl-number-tests (&optional arg)
  "Assign consecutive numbers to lines containing `#t'.  With ARG,
strip numbers instead."
  (interactive "P")
  (save-excursion
    (goto-char (point-min))
    (let ((i 0) (fmt (if arg "" " %4d")))
      (while (search-forward "#t" nil t)
        (delete-region (point) (line-end-position))
        (setq i (1+ i))
        (insert (format fmt i)))
      (goto-char (point-min))
      (if (re-search-forward "\\(tests\\s-*=>\\s-*\\)\\w*" nil t)
          (replace-match (format "\\1%d" i))))))

;;;--------------------------------------------------------------------------
;;; Python programming style.

(defun mdw-fontify-pythonic (keywords)

  ;; Miscellaneous fiddling.
  (mdw-standard-fill-prefix "\\([ \t]*#+[ \t]*\\)")
  (setq indent-tabs-mode nil)

  ;; Now define fontification things.
  (make-local-variable 'font-lock-keywords)
  (setq font-lock-keywords
        (list

         ;; Set up the keywords defined above.
         (list (concat "\\_<\\(" keywords "\\)\\_>")
               '(0 font-lock-keyword-face))

         ;; At least numbers are simpler than C.
         (list (concat "\\_<0\\([xX][0-9a-fA-F_]+\\|[0-7_]+\\)\\|"
                       "\\_<[0-9][0-9_]*\\(\\.[0-9_]*\\|\\)"
                       "\\([eE]\\([-+]\\|\\)[0-9_]+\\|[lL]\\|\\)")
               '(0 mdw-number-face))

         ;; And anything else is punctuation.
         (list "\\(\\s.\\|\\s(\\|\\s)\\|\\s\\\\|\\s/\\)"
               '(0 mdw-punct-face))))

  (mdw-post-config-mode-hack))

;; Define Python fontification styles.

(defun mdw-fontify-python ()
  (mdw-fontify-pythonic
   (mdw-regexps "and" "as" "assert" "break" "class" "continue" "def"
                "del" "elif" "else" "except" "exec" "finally" "for"
                "from" "global" "if" "import" "in" "is" "lambda"
                "not" "or" "pass" "print" "raise" "return" "try"
                "while" "with" "yield")))

(defun mdw-fontify-pyrex ()
  (mdw-fontify-pythonic
   (mdw-regexps "and" "as" "assert" "break" "cdef" "class" "continue"
                "ctypedef" "def" "del" "elif" "else" "except" "exec"
                "extern" "finally" "for" "from" "global" "if"
                "import" "in" "is" "lambda" "not" "or" "pass" "print"
                "raise" "return" "struct" "try" "while" "with"
                "yield")))

;;;--------------------------------------------------------------------------
;;; Icon programming style.

;; Icon indentation style.

(setq icon-brace-offset 0
      icon-continued-brace-offset 0
      icon-continued-statement-offset 2
      icon-indent-level 2)

;; Define Icon fontification style.

(defun mdw-fontify-icon ()

  ;; Miscellaneous fiddling.
  (mdw-standard-fill-prefix "\\([ \t]*#+[ \t]*\\)")

  ;; Now define fontification things.
  (make-local-variable 'font-lock-keywords)
  (let ((icon-keywords
         (mdw-regexps "break" "by" "case" "create" "default" "do" "else"
                      "end" "every" "fail" "global" "if" "initial"
                      "invocable" "link" "local" "next" "not" "of"
                      "procedure" "record" "repeat" "return" "static"
                      "suspend" "then" "to" "until" "while"))
        (preprocessor-keywords
         (mdw-regexps "define" "else" "endif" "error" "ifdef" "ifndef"
                      "include" "line" "undef")))
    (setq font-lock-keywords
          (list

           ;; Set up the keywords defined above.
           (list (concat "\\<\\(" icon-keywords "\\)\\>")
                 '(0 font-lock-keyword-face))

           ;; The things that Icon calls keywords.
           (list "&\\sw+\\>" '(0 font-lock-variable-name-face))

           ;; At least numbers are simpler than C.
           (list (concat "\\<[0-9]+"
                         "\\([rR][0-9a-zA-Z]+\\|"
                         "\\.[0-9]+\\([eE][+-]?[0-9]+\\)?\\)\\>\\|"
                         "\\.[0-9]+\\([eE][+-]?[0-9]+\\)?\\>")
                 '(0 mdw-number-face))

           ;; Preprocessor.
           (list (concat "^[ \t]*$[ \t]*\\<\\("
                         preprocessor-keywords
                         "\\)\\>")
                 '(0 font-lock-keyword-face))

           ;; And anything else is punctuation.
           (list "\\(\\s.\\|\\s(\\|\\s)\\|\\s\\\\|\\s/\\)"
                 '(0 mdw-punct-face)))))

  (mdw-post-config-mode-hack))

;;;--------------------------------------------------------------------------
;;; ARM assembler programming configuration.

;; There doesn't appear to be an Emacs mode for this yet.
;;
;; Better do something about that, I suppose.

(defvar arm-assembler-mode-map nil)
(defvar arm-assembler-abbrev-table nil)
(defvar arm-assembler-mode-syntax-table (make-syntax-table))

(or arm-assembler-mode-map
    (progn
      (setq arm-assembler-mode-map (make-sparse-keymap))
      (define-key arm-assembler-mode-map "\C-m" 'arm-assembler-newline)
      (define-key arm-assembler-mode-map [C-return] 'newline)
      (define-key arm-assembler-mode-map "\t" 'tab-to-tab-stop)))

(defun arm-assembler-mode ()
  "Major mode for ARM assembler programs"
  (interactive)

  ;; Do standard major mode things.
  (kill-all-local-variables)
  (use-local-map arm-assembler-mode-map)
  (setq local-abbrev-table arm-assembler-abbrev-table)
  (setq major-mode 'arm-assembler-mode)
  (setq mode-name "ARM assembler")

  ;; Set up syntax table.
  (set-syntax-table arm-assembler-mode-syntax-table)
  (modify-syntax-entry ?;   ; Nasty hack
                       "<" arm-assembler-mode-syntax-table)
  (modify-syntax-entry ?\n ">" arm-assembler-mode-syntax-table)
  (modify-syntax-entry ?_ "_" arm-assembler-mode-syntax-table)
  (modify-syntax-entry ?' "\"'" arm-assembler-mode-syntax-table)

  (make-local-variable 'comment-start)
  (setq comment-start ";")
  (make-local-variable 'comment-end)
  (setq comment-end "")
  (make-local-variable 'comment-column)
  (setq comment-column 48)
  (make-local-variable 'comment-start-skip)
  (setq comment-start-skip ";+[ \t]*")

  ;; Play with indentation.
  (make-local-variable 'indent-line-function)
  (setq indent-line-function 'indent-relative-maybe)

  ;; Set fill prefix.
  (mdw-standard-fill-prefix "\\([ \t]*;+[ \t]*\\)")

  ;; Fiddle with fontification.
  (make-local-variable 'font-lock-keywords)
  (setq font-lock-keywords
        (list

         ;; Handle numbers too.
         ;;
         ;; The following isn't quite right, but it's close enough.
         (list (concat "\\("
                       "&[0-9a-fA-F]+\\|"
                       "\\<[0-9]+\\(\\.[0-9]*\\|_[0-9a-zA-Z]+\\|\\)"
                       "\\)")
               '(0 mdw-number-face))

         ;; Do something about operators.
         (list "^[^ \t]*[ \t]+\\(GET\\|LNK\\)[ \t]+\\([^;\n]*\\)"
               '(1 font-lock-keyword-face)
               '(2 font-lock-string-face))
         (list ":[a-zA-Z]+:"
               '(0 font-lock-keyword-face))

         ;; Do menemonics and directives.
         (list "^[^ \t]*[ \t]+\\([a-zA-Z]+\\)"
               '(1 font-lock-keyword-face))

         ;; And anything else is punctuation.
         (list "\\(\\s.\\|\\s(\\|\\s)\\|\\s\\\\|\\s/\\)"
               '(0 mdw-punct-face))))

  (mdw-post-config-mode-hack)
  (run-hooks 'arm-assembler-mode-hook))

;;;--------------------------------------------------------------------------
;;; Assembler mode.

(defun mdw-fontify-asm ()
  (modify-syntax-entry ?' "\"")
  (modify-syntax-entry ?. "w")
  (setf fill-prefix nil)
  (mdw-standard-fill-prefix "\\([ \t]*;+[ \t]*\\)"))

;;;--------------------------------------------------------------------------
;;; TCL configuration.

(defun mdw-fontify-tcl ()
  (mapcar #'(lambda (ch) (modify-syntax-entry ch ".")) '(?$))
  (mdw-standard-fill-prefix "\\([ \t]*#+[ \t]*\\)")
  (make-local-variable 'font-lock-keywords)
  (setq font-lock-keywords
        (list
         (list (concat "\\<0\\([xX][0-9a-fA-F_]+\\|[0-7_]+\\)\\|"
                       "\\<[0-9][0-9_]*\\(\\.[0-9_]*\\|\\)"
                       "\\([eE]\\([-+]\\|\\)[0-9_]+\\|\\)")
               '(0 mdw-number-face))
         (list "\\(\\s.\\|\\s(\\|\\s)\\|\\s\\\\|\\s/\\)"
               '(0 mdw-punct-face))))
  (mdw-post-config-mode-hack))

;;;--------------------------------------------------------------------------
;;; Dylan programming configuration.

(defun mdw-fontify-dylan ()

  (make-local-variable 'font-lock-keywords)

  ;; Horrors.  `dylan-mode' sets the `major-mode' name after calling this
  ;; hook, which undoes all of our configuration.
  (setq major-mode 'dylan-mode)
  (font-lock-set-defaults)

  (let* ((word "[-_a-zA-Z!*@<>$%]+")
         (dylan-keywords (mdw-regexps

                          "C-address" "C-callable-wrapper" "C-function"
                          "C-mapped-subtype" "C-pointer-type" "C-struct"
                          "C-subtype" "C-union" "C-variable"

                          "above" "abstract" "afterwards" "all"
                          "begin" "below" "block" "by"
                          "case" "class" "cleanup" "constant" "create"
                          "define" "domain"
                          "else" "elseif" "end" "exception" "export"
                          "finally" "for" "from" "function"
                          "generic"
                          "handler"
                          "if" "in" "instance" "interface" "iterate"
                          "keyed-by"
                          "let" "library" "local"
                          "macro" "method" "module"
                          "otherwise"
                          "profiling"
                          "select" "slot" "subclass"
                          "table" "then" "to"
                          "unless" "until" "use"
                          "variable" "virtual"
                          "when" "while"))
         (sharp-keywords (mdw-regexps
                          "all-keys" "key" "next" "rest" "include"
                          "t" "f")))
    (setq font-lock-keywords
          (list (list (concat "\\<\\(" dylan-keywords
                              "\\|" "with\\(out\\)?-" word
                              "\\)\\>")
                      '(0 font-lock-keyword-face))
                (list (concat "\\<" word ":" "\\|"
                              "#\\(" sharp-keywords "\\)\\>")
                      '(0 font-lock-variable-name-face))
                (list (concat "\\("
                              "\\([-+]\\|\\<\\)[0-9]+" "\\("
                                "\\(\\.[0-9]+\\)?" "\\([eE][-+][0-9]+\\)?"
                                "\\|" "/[0-9]+"
                              "\\)"
                              "\\|" "\\.[0-9]+" "\\([eE][-+][0-9]+\\)?"
                              "\\|" "#b[01]+"
                              "\\|" "#o[0-7]+"
                              "\\|" "#x[0-9a-zA-Z]+"
                              "\\)\\>")
                      '(0 mdw-number-face))
                (list (concat "\\("
                              "\\s.\\|\\s(\\|\\s)\\|\\s\\\\|\\s/\\|"
                              "\\_<[-+*/=<>:&|]+\\_>"
                              "\\)")
                      '(0 mdw-punct-face)))))

  (mdw-post-config-mode-hack))

;;;--------------------------------------------------------------------------
;;; Algol 68 configuration.

(setq a68-indent-step 2)

(defun mdw-fontify-algol-68 ()

  ;; Fix up the syntax table.
  (modify-syntax-entry ?# "!" a68-mode-syntax-table)
  (dolist (ch '(?- ?+ ?= ?< ?> ?* ?/ ?| ?&))
    (modify-syntax-entry ch "." a68-mode-syntax-table))

  (make-local-variable 'font-lock-keywords)

  (let ((not-comment
         (let ((word "COMMENT"))
           (do ((regexp (concat "[^" (substring word 0 1) "]+")
                        (concat regexp "\\|"
                                (substring word 0 i)
                                "[^" (substring word i (1+ i)) "]"))
                (i 1 (1+ i)))
               ((>= i (length word)) regexp)))))
    (setq font-lock-keywords
          (list (list (concat "\\<COMMENT\\>"
                              "\\(" not-comment "\\)\\{0,5\\}"
                              "\\(\\'\\|\\<COMMENT\\>\\)")
                      '(0 font-lock-comment-face))
                (list (concat "\\<CO\\>"
                              "\\([^C]+\\|C[^O]\\)\\{0,5\\}"
                              "\\($\\|\\<CO\\>\\)")
                      '(0 font-lock-comment-face))
                (list "\\<[A-Z_]+\\>"
                      '(0 font-lock-keyword-face))
                (list (concat "\\<"
                              "[0-9]+"
                              "\\(\\.[0-9]+\\)?"
                              "\\([eE][-+]?[0-9]+\\)?"
                              "\\>")
                      '(0 mdw-number-face))
                (list "\\s.\\|\\s(\\|\\s)\\|\\s\\\\|\\s/"
                      '(0 mdw-punct-face)))))

  (mdw-post-config-mode-hack))

;;;--------------------------------------------------------------------------
;;; REXX configuration.

(defun mdw-rexx-electric-* ()
  (interactive)
  (insert ?*)
  (rexx-indent-line))

(defun mdw-rexx-indent-newline-indent ()
  (interactive)
  (rexx-indent-line)
  (if abbrev-mode (expand-abbrev))
  (newline-and-indent))

(defun mdw-fontify-rexx ()

  ;; Various bits of fiddling.
  (setq mdw-auto-indent nil)
  (local-set-key [?\C-m] 'mdw-rexx-indent-newline-indent)
  (local-set-key [?*] 'mdw-rexx-electric-*)
  (mapcar #'(lambda (ch) (modify-syntax-entry ch "w"))
          '(?! ?? ?# ?@ ?$))
  (mdw-standard-fill-prefix "\\([ \t]*/?\*[ \t]*\\)")

  ;; Set up keywords and things for fontification.
  (make-local-variable 'font-lock-keywords-case-fold-search)
  (setq font-lock-keywords-case-fold-search t)

  (setq rexx-indent 2)
  (setq rexx-end-indent rexx-indent)
  (setq rexx-cont-indent rexx-indent)

  (make-local-variable 'font-lock-keywords)
  (let ((rexx-keywords
         (mdw-regexps "address" "arg" "by" "call" "digits" "do" "drop"
                      "else" "end" "engineering" "exit" "expose" "for"
                      "forever" "form" "fuzz" "if" "interpret" "iterate"
                      "leave" "linein" "name" "nop" "numeric" "off" "on"
                      "options" "otherwise" "parse" "procedure" "pull"
                      "push" "queue" "return" "say" "select" "signal"
                      "scientific" "source" "then" "trace" "to" "until"
                      "upper" "value" "var" "version" "when" "while"
                      "with"

                      "abbrev" "abs" "bitand" "bitor" "bitxor" "b2x"
                      "center" "center" "charin" "charout" "chars"
                      "compare" "condition" "copies" "c2d" "c2x"
                      "datatype" "date" "delstr" "delword" "d2c" "d2x"
                      "errortext" "format" "fuzz" "insert" "lastpos"
                      "left" "length" "lineout" "lines" "max" "min"
                      "overlay" "pos" "queued" "random" "reverse" "right"
                      "sign" "sourceline" "space" "stream" "strip"
                      "substr" "subword" "symbol" "time" "translate"
                      "trunc" "value" "verify" "word" "wordindex"
                      "wordlength" "wordpos" "words" "xrange" "x2b" "x2c"
                      "x2d")))

    (setq font-lock-keywords
          (list

           ;; Set up the keywords defined above.
           (list (concat "\\<\\(" rexx-keywords "\\)\\>")
                 '(0 font-lock-keyword-face))

           ;; Fontify all symbols the same way.
           (list (concat "\\<\\([0-9.][A-Za-z0-9.!?_#@$]*[Ee][+-]?[0-9]+\\|"
                         "[A-Za-z0-9.!?_#@$]+\\)")
                 '(0 font-lock-variable-name-face))

           ;; And everything else is punctuation.
           (list "\\(\\s.\\|\\s(\\|\\s)\\|\\s\\\\|\\s/\\)"
                 '(0 mdw-punct-face)))))

  (mdw-post-config-mode-hack))

;;;--------------------------------------------------------------------------
;;; Standard ML programming style.

(defun mdw-fontify-sml ()

  ;; Make underscore an honorary letter.
  (modify-syntax-entry ?' "w")

  ;; Set fill prefix.
  (mdw-standard-fill-prefix "\\([ \t]*(\*[ \t]*\\)")

  ;; Now define fontification things.
  (make-local-variable 'font-lock-keywords)
  (let ((sml-keywords
         (mdw-regexps "abstype" "and" "andalso" "as"
                      "case"
                      "datatype" "do"
                      "else" "end" "eqtype" "exception"
                      "fn" "fun" "functor"
                      "handle"
                      "if" "in" "include" "infix" "infixr"
                      "let" "local"
                      "nonfix"
                      "of" "op" "open" "orelse"
                      "raise" "rec"
                      "sharing" "sig" "signature" "struct" "structure"
                      "then" "type"
                      "val"
                      "where" "while" "with" "withtype")))

    (setq font-lock-keywords
          (list

           ;; Set up the keywords defined above.
           (list (concat "\\<\\(" sml-keywords "\\)\\>")
                 '(0 font-lock-keyword-face))

           ;; At least numbers are simpler than C.
           (list (concat "\\<\\(\\~\\|\\)"
                            "\\(0\\(\\([wW]\\|\\)[xX][0-9a-fA-F]+\\|"
                                   "[wW][0-9]+\\)\\|"
                                "\\([0-9]+\\(\\.[0-9]+\\|\\)"
                                         "\\([eE]\\(\\~\\|\\)"
                                                "[0-9]+\\|\\)\\)\\)")
                 '(0 mdw-number-face))

           ;; And anything else is punctuation.
           (list "\\(\\s.\\|\\s(\\|\\s)\\|\\s\\\\|\\s/\\)"
                 '(0 mdw-punct-face)))))

  (mdw-post-config-mode-hack))

;;;--------------------------------------------------------------------------
;;; Haskell configuration.

(defun mdw-fontify-haskell ()

  ;; Fiddle with syntax table to get comments right.
  (modify-syntax-entry ?' "_")
  (modify-syntax-entry ?- ". 12")
  (modify-syntax-entry ?\n ">")

  ;; Make punctuation be punctuation
  (let ((punct "=<>+-*/|&%!@?$.^:#`"))
    (do ((i 0 (1+ i)))
        ((>= i (length punct)))
      (modify-syntax-entry (aref punct i) ".")))

  ;; Set fill prefix.
  (mdw-standard-fill-prefix "\\([ \t]*{?--?[ \t]*\\)")

  ;; Fiddle with fontification.
  (make-local-variable 'font-lock-keywords)
  (let ((haskell-keywords
         (mdw-regexps "as"
                      "case" "ccall" "class"
                      "data" "default" "deriving" "do"
                      "else" "exists"
                      "forall" "foreign"
                      "hiding"
                      "if" "import" "in" "infix" "infixl" "infixr" "instance"
                      "let"
                      "mdo" "module"
                      "newtype"
                      "of"
                      "proc"
                      "qualified"
                      "rec"
                      "safe" "stdcall"
                      "then" "type"
                      "unsafe"
                      "where"))
        (control-sequences
         (mdw-regexps "ACK" "BEL" "BS" "CAN" "CR" "DC1" "DC2" "DC3" "DC4"
                      "DEL" "DLE" "EM" "ENQ" "EOT" "ESC" "ETB" "ETX" "FF"
                      "FS" "GS" "HT" "LF" "NAK" "NUL" "RS" "SI" "SO" "SOH"
                      "SP" "STX" "SUB" "SYN" "US" "VT")))

    (setq font-lock-keywords
          (list
           (list (concat "{-" "[^-]*" "\\(-+[^-}][^-]*\\)*"
                              "\\(-+}\\|-*\\'\\)"
                         "\\|"
                         "--.*$")
                 '(0 font-lock-comment-face))
           (list (concat "\\_<\\(" haskell-keywords "\\)\\_>")
                 '(0 font-lock-keyword-face))
           (list (concat "'\\("
                         "[^\\]"
                         "\\|"
                         "\\\\"
                         "\\(" "[abfnrtv\\\"']" "\\|"
                               "^" "\\(" control-sequences "\\|"
                                         "[]A-Z@[\\^_]" "\\)" "\\|"
                               "\\|"
                               "[0-9]+" "\\|"
                               "[oO][0-7]+" "\\|"
                               "[xX][0-9A-Fa-f]+"
                         "\\)"
                         "\\)'")
                 '(0 font-lock-string-face))
           (list "\\_<[A-Z]\\(\\sw+\\|\\s_+\\)*\\_>"
                 '(0 font-lock-variable-name-face))
           (list (concat "\\_<0\\([xX][0-9a-fA-F]+\\|[oO][0-7]+\\)\\|"
                         "\\_<[0-9]+\\(\\.[0-9]*\\|\\)"
                         "\\([eE]\\([-+]\\|\\)[0-9]+\\|\\)")
                 '(0 mdw-number-face))
           (list "\\(\\s.\\|\\s(\\|\\s)\\|\\s\\\\|\\s/\\)"
                 '(0 mdw-punct-face)))))

  (mdw-post-config-mode-hack))

;;;--------------------------------------------------------------------------
;;; Erlang configuration.

(setq erlang-electric-commands nil)

(defun mdw-fontify-erlang ()

  ;; Set fill prefix.
  (mdw-standard-fill-prefix "\\([ \t]*{?%*[ \t]*\\)")

  ;; Fiddle with fontification.
  (make-local-variable 'font-lock-keywords)
  (let ((erlang-keywords
         (mdw-regexps "after" "and" "andalso"
                      "band" "begin" "bnot" "bor" "bsl" "bsr" "bxor"
                      "case" "catch" "cond"
                      "div" "end" "fun" "if" "let" "not"
                      "of" "or" "orelse"
                      "query" "receive" "rem" "try" "when" "xor")))

    (setq font-lock-keywords
          (list
           (list "%.*$"
                 '(0 font-lock-comment-face))
           (list (concat "\\<\\(" erlang-keywords "\\)\\>")
                 '(0 font-lock-keyword-face))
           (list (concat "^-\\sw+\\>")
                 '(0 font-lock-keyword-face))
           (list "\\<[0-9]+\\(\\|#[0-9a-zA-Z]+\\|[eE][+-]?[0-9]+\\)\\>"
                 '(0 mdw-number-face))
           (list "\\(\\s.\\|\\s(\\|\\s)\\|\\s\\\\|\\s/\\)"
                 '(0 mdw-punct-face)))))

  (mdw-post-config-mode-hack))

;;;--------------------------------------------------------------------------
;;; Texinfo configuration.

(defun mdw-fontify-texinfo ()

  ;; Set fill prefix.
  (mdw-standard-fill-prefix "\\([ \t]*@c[ \t]+\\)")

  ;; Real fontification things.
  (make-local-variable 'font-lock-keywords)
  (setq font-lock-keywords
        (list

         ;; Environment names are keywords.
         (list "@\\(end\\)  *\\([a-zA-Z]*\\)?"
               '(2 font-lock-keyword-face))

         ;; Unmark escaped magic characters.
         (list "\\(@\\)\\([@{}]\\)"
               '(1 font-lock-keyword-face)
               '(2 font-lock-variable-name-face))

         ;; Make sure we get comments properly.
         (list "@c\\(\\|omment\\)\\( .*\\)?$"
               '(0 font-lock-comment-face))

         ;; Command names are keywords.
         (list "@\\([^a-zA-Z@]\\|[a-zA-Z@]*\\)"
               '(0 font-lock-keyword-face))

         ;; Fontify TeX special characters as punctuation.
         (list "[{}]+"
               '(0 mdw-punct-face))))

  (mdw-post-config-mode-hack))

;;;--------------------------------------------------------------------------
;;; TeX and LaTeX configuration.

(defun mdw-fontify-tex ()
  (setq ispell-parser 'tex)
  (turn-on-reftex)

  ;; Don't make maths into a string.
  (modify-syntax-entry ?$ ".")
  (modify-syntax-entry ?$ "." font-lock-syntax-table)
  (local-set-key [?$] 'self-insert-command)

  ;; Set fill prefix.
  (mdw-standard-fill-prefix "\\([ \t]*%+[ \t]*\\)")

  ;; Real fontification things.
  (make-local-variable 'font-lock-keywords)
  (setq font-lock-keywords
        (list

         ;; Environment names are keywords.
         (list (concat "\\\\\\(begin\\|end\\|newenvironment\\)"
                       "{\\([^}\n]*\\)}")
               '(2 font-lock-keyword-face))

         ;; Suspended environment names are keywords too.
         (list (concat "\\\\\\(suspend\\|resume\\)\\(\\[[^]]*\\]\\)?"
                       "{\\([^}\n]*\\)}")
               '(3 font-lock-keyword-face))

         ;; Command names are keywords.
         (list "\\\\\\([^a-zA-Z@]\\|[a-zA-Z@]*\\)"
               '(0 font-lock-keyword-face))

         ;; Handle @/.../ for italics.
         ;; (list "\\(@/\\)\\([^/]*\\)\\(/\\)"
         ;;       '(1 font-lock-keyword-face)
         ;;       '(3 font-lock-keyword-face))

         ;; Handle @*...* for boldness.
         ;; (list "\\(@\\*\\)\\([^*]*\\)\\(\\*\\)"
         ;;       '(1 font-lock-keyword-face)
         ;;       '(3 font-lock-keyword-face))

         ;; Handle @`...' for literal syntax things.
         ;; (list "\\(@`\\)\\([^']*\\)\\('\\)"
         ;;       '(1 font-lock-keyword-face)
         ;;       '(3 font-lock-keyword-face))

         ;; Handle @<...> for nonterminals.
         ;; (list "\\(@<\\)\\([^>]*\\)\\(>\\)"
         ;;       '(1 font-lock-keyword-face)
         ;;       '(3 font-lock-keyword-face))

         ;; Handle other @-commands.
         ;; (list "@\\([^a-zA-Z]\\|[a-zA-Z]*\\)"
         ;;       '(0 font-lock-keyword-face))

         ;; Make sure we get comments properly.
         (list "%.*"
               '(0 font-lock-comment-face))

         ;; Fontify TeX special characters as punctuation.
         (list "[$^_{}#&]"
               '(0 mdw-punct-face))))

  (mdw-post-config-mode-hack))

;;;--------------------------------------------------------------------------
;;; SGML hacking.

(defun mdw-sgml-mode ()
  (interactive)
  (sgml-mode)
  (mdw-standard-fill-prefix "")
  (make-local-variable 'sgml-delimiters)
  (setq sgml-delimiters
        '("AND" "&" "COM" "--" "CRO" "&#" "DSC" "]" "DSO" "[" "DTGC" "]"
          "DTGO" "[" "ERO" "&" "ETAGO" ":e" "GRPC" ")" "GRPO" "(" "LIT" "\""
          "LITA" "'" "MDC" ">" "MDO" "<!" "MINUS" "-" "MSC" "]]" "NESTC" "{"
          "NET" "}" "OPT" "?" "OR" "|" "PERO" "%" "PIC" ">" "PIO" "<?"
          "PLUS" "+" "REFC" "." "REP" "*" "RNI" "#" "SEQ" "," "STAGO" ":"
          "TAGC" "." "VI" "=" "MS-START" "<![" "MS-END" "]]>"
          "XML-ECOM" "-->" "XML-PIC" "?>" "XML-SCOM" "<!--" "XML-TAGCE" "/>"
          "NULL" ""))
  (setq major-mode 'mdw-sgml-mode)
  (setq mode-name "[mdw] SGML")
  (run-hooks 'mdw-sgml-mode-hook))

;;;--------------------------------------------------------------------------
;;; Configuration files.

(defvar mdw-conf-quote-normal nil
  "*Control syntax category of quote characters `\"' and `''.
If this is `t', consider quote characters to be normal
punctuation, as for `conf-quote-normal'.  If this is `nil' then
leave quote characters as quotes.  If this is a list, then
consider the quote characters in the list to be normal
punctuation.  If this is a single quote character, then consider
that character only to be normal punctuation.")
(defun mdw-conf-quote-normal-acceptable-value-p (value)
  "Is the VALUE is an acceptable value for `mdw-conf-quote-normal'?"
  (or (booleanp value)
      (every (lambda (v) (memq v '(?\" ?')))
             (if (listp value) value (list value)))))
(put 'mdw-conf-quote-normal 'safe-local-variable '
     mdw-conf-quote-normal-acceptable-value-p)

(defun mdw-fix-up-quote ()
  "Apply the setting of `mdw-conf-quote-normal'."
  (let ((flag mdw-conf-quote-normal))
    (cond ((eq flag t)
           (conf-quote-normal t))
          ((not flag)
           nil)
          (t
           (let ((table (copy-syntax-table (syntax-table))))
             (mapc (lambda (ch) (modify-syntax-entry ch "." table))
                   (if (listp flag) flag (list flag)))
             (set-syntax-table table)
             (and font-lock-mode (font-lock-fontify-buffer)))))))
(defun mdw-fix-up-quote-hack ()
  "Unpleasant hack to call `mdw-fix-up-quote' at the right time.
Annoyingly, `hack-local-variables' is done after `set-auto-mode'
so we wouldn't see a local-variable setting of
`mdw-conf-quote-normal' in `conf-mode-hook'.  Instead, wire
ourselves onto `hack-local-variables-hook' here, and check the
setting once it's actually been made."
  (add-hook 'hack-local-variables-hook 'mdw-fix-up-quote t t))
(add-hook 'conf-mode-hook 'mdw-fix-up-quote-hack t)

;;;--------------------------------------------------------------------------
;;; Shell scripts.

(defun mdw-setup-sh-script-mode ()

  ;; Fetch the shell interpreter's name.
  (let ((shell-name sh-shell-file))

    ;; Try reading the hash-bang line.
    (save-excursion
      (goto-char (point-min))
      (if (looking-at "#![ \t]*\\([^ \t\n]*\\)")
          (setq shell-name (match-string 1))))

    ;; Now try to set the shell.
    ;;
    ;; Don't let `sh-set-shell' bugger up my script.
    (let ((executable-set-magic #'(lambda (s &rest r) s)))
      (sh-set-shell shell-name)))

  ;; Now enable my keys and the fontification.
  (mdw-misc-mode-config)

  ;; Set the indentation level correctly.
  (setq sh-indentation 2)
  (setq sh-basic-offset 2))

(setq sh-shell-file "/bin/sh")

;; Awful hacking to override the shell detection for particular scripts.
(defmacro define-custom-shell-mode (name shell)
  `(defun ,name ()
     (interactive)
     (set (make-local-variable 'sh-shell-file) ,shell)
     (sh-mode)))
(define-custom-shell-mode bash-mode "/bin/bash")
(define-custom-shell-mode rc-mode "/usr/bin/rc")
(put 'sh-shell-file 'permanent-local t)

;; Hack the rc syntax table.  Backquotes aren't paired in rc.
(eval-after-load "sh-script"
  '(or (assq 'rc sh-mode-syntax-table-input)
       (let ((frag '(nil
                     ?# "<"
                     ?\n ">#"
                     ?\" "\"\""
                     ?\' "\"\'"
                     ?$ "'"
                     ?\` "."
                     ?! "_"
                     ?% "_"
                     ?. "_"
                     ?^ "_"
                     ?~ "_"
                     ?, "_"
                     ?= "."
                     ?< "."
                     ?> "."))
             (assoc (assq 'rc sh-mode-syntax-table-input)))
         (if assoc
             (rplacd assoc frag)
           (setq sh-mode-syntax-table-input
                 (cons (cons 'rc frag)
                       sh-mode-syntax-table-input))))))

;;;--------------------------------------------------------------------------
;;; Emacs shell mode.

(defun mdw-eshell-prompt ()
  (let ((left "[") (right "]"))
    (when (= (user-uid) 0)
      (setq left "«" right "»"))
    (concat left
            (save-match-data
              (replace-regexp-in-string "\\..*$" "" (system-name)))
            " "
            (let* ((pwd (eshell/pwd)) (npwd (length pwd))
                   (home (expand-file-name "~")) (nhome (length home)))
              (if (and (>= npwd nhome)
                       (or (= nhome npwd)
                           (= (elt pwd nhome) ?/))
                       (string= (substring pwd 0 nhome) home))
                  (concat "~" (substring pwd (length home)))
                pwd))
            right)))
(setq eshell-prompt-function 'mdw-eshell-prompt)
(setq eshell-prompt-regexp "^\\[[^]>]+\\(\\]\\|>>?\\)")

(defun eshell/e (file) (find-file file) nil)
(defun eshell/ee (file) (find-file-other-window file) nil)
(defun eshell/w3m (url) (w3m-goto-url url) nil)

(mdw-define-face eshell-prompt (t :weight bold))
(mdw-define-face eshell-ls-archive (t :weight bold :foreground "red"))
(mdw-define-face eshell-ls-backup (t :foreground "lightgrey" :slant italic))
(mdw-define-face eshell-ls-product (t :foreground "lightgrey" :slant italic))
(mdw-define-face eshell-ls-clutter (t :foreground "lightgrey" :slant italic))
(mdw-define-face eshell-ls-executable (t :weight bold))
(mdw-define-face eshell-ls-directory (t :foreground "cyan" :weight bold))
(mdw-define-face eshell-ls-readonly (t nil))
(mdw-define-face eshell-ls-symlink (t :foreground "cyan"))

;;;--------------------------------------------------------------------------
;;; Messages-file mode.

(defun messages-mode-guts ()
  (setq messages-mode-syntax-table (make-syntax-table))
  (set-syntax-table messages-mode-syntax-table)
  (modify-syntax-entry ?0 "w" messages-mode-syntax-table)
  (modify-syntax-entry ?1 "w" messages-mode-syntax-table)
  (modify-syntax-entry ?2 "w" messages-mode-syntax-table)
  (modify-syntax-entry ?3 "w" messages-mode-syntax-table)
  (modify-syntax-entry ?4 "w" messages-mode-syntax-table)
  (modify-syntax-entry ?5 "w" messages-mode-syntax-table)
  (modify-syntax-entry ?6 "w" messages-mode-syntax-table)
  (modify-syntax-entry ?7 "w" messages-mode-syntax-table)
  (modify-syntax-entry ?8 "w" messages-mode-syntax-table)
  (modify-syntax-entry ?9 "w" messages-mode-syntax-table)
  (make-local-variable 'comment-start)
  (make-local-variable 'comment-end)
  (make-local-variable 'indent-line-function)
  (setq indent-line-function 'indent-relative)
  (mdw-standard-fill-prefix "\\([ \t]*\\(;\\|/?\\*\\)+[ \t]*\\)")
  (make-local-variable 'font-lock-defaults)
  (make-local-variable 'messages-mode-keywords)
  (let ((keywords
         (mdw-regexps "array" "bitmap" "callback" "docs[ \t]+enum"
                      "export" "enum" "fixed-octetstring" "flags"
                      "harmless" "map" "nested" "optional"
                      "optional-tagged" "package" "primitive"
                      "primitive-nullfree" "relaxed[ \t]+enum"
                      "set" "table" "tagged-optional"   "union"
                      "variadic" "vector" "version" "version-tag")))
    (setq messages-mode-keywords
          (list
           (list (concat "\\<\\(" keywords "\\)\\>:")
                 '(0 font-lock-keyword-face))
           '("\\([-a-zA-Z0-9]+:\\)" (0 font-lock-warning-face))
           '("\\(\\<[a-z][-_a-zA-Z0-9]*\\)"
             (0 font-lock-variable-name-face))
           '("\\<\\([0-9]+\\)\\>" (0 mdw-number-face))
           '("\\(\\s.\\|\\s(\\|\\s)\\|\\s\\\\|\\s/\\)"
             (0 mdw-punct-face)))))
  (setq font-lock-defaults
        '(messages-mode-keywords nil nil nil nil))
  (run-hooks 'messages-file-hook))

(defun messages-mode ()
  (interactive)
  (fundamental-mode)
  (setq major-mode 'messages-mode)
  (setq mode-name "Messages")
  (messages-mode-guts)
  (modify-syntax-entry ?# "<" messages-mode-syntax-table)
  (modify-syntax-entry ?\n ">" messages-mode-syntax-table)
  (setq comment-start "# ")
  (setq comment-end "")
  (run-hooks 'messages-mode-hook))

(defun cpp-messages-mode ()
  (interactive)
  (fundamental-mode)
  (setq major-mode 'cpp-messages-mode)
  (setq mode-name "CPP Messages")
  (messages-mode-guts)
  (modify-syntax-entry ?* ". 23" messages-mode-syntax-table)
  (modify-syntax-entry ?/ ". 14" messages-mode-syntax-table)
  (setq comment-start "/* ")
  (setq comment-end " */")
  (let ((preprocessor-keywords
         (mdw-regexps "assert" "define" "elif" "else" "endif" "error"
                      "ident" "if" "ifdef" "ifndef" "import" "include"
                      "line" "pragma" "unassert" "undef" "warning")))
    (setq messages-mode-keywords
          (append (list (list (concat "^[ \t]*\\#[ \t]*"
                                      "\\(include\\|import\\)"
                                      "[ \t]*\\(<[^>]+\\(>\\|\\)\\)")
                              '(2 font-lock-string-face))
                        (list (concat "^\\([ \t]*#[ \t]*\\(\\("
                                      preprocessor-keywords
                                      "\\)\\>\\|[0-9]+\\|$\\)\\)")
                              '(1 font-lock-keyword-face)))
                  messages-mode-keywords)))
  (run-hooks 'cpp-messages-mode-hook))

(add-hook 'messages-mode-hook 'mdw-misc-mode-config t)
(add-hook 'cpp-messages-mode-hook 'mdw-misc-mode-config t)
; (add-hook 'messages-file-hook 'mdw-fontify-messages t)

;;;--------------------------------------------------------------------------
;;; Messages-file mode.

(defvar mallow-driver-substitution-face 'mallow-driver-substitution-face
  "Face to use for subsittution directives.")
(make-face 'mallow-driver-substitution-face)
(defvar mallow-driver-text-face 'mallow-driver-text-face
  "Face to use for body text.")
(make-face 'mallow-driver-text-face)

(defun mallow-driver-mode ()
  (interactive)
  (fundamental-mode)
  (setq major-mode 'mallow-driver-mode)
  (setq mode-name "Mallow driver")
  (setq mallow-driver-mode-syntax-table (make-syntax-table))
  (set-syntax-table mallow-driver-mode-syntax-table)
  (make-local-variable 'comment-start)
  (make-local-variable 'comment-end)
  (make-local-variable 'indent-line-function)
  (setq indent-line-function 'indent-relative)
  (mdw-standard-fill-prefix "\\([ \t]*\\(;\\|/?\\*\\)+[ \t]*\\)")
  (make-local-variable 'font-lock-defaults)
  (make-local-variable 'mallow-driver-mode-keywords)
  (let ((keywords
         (mdw-regexps "each" "divert" "file" "if"
                      "perl" "set" "string" "type" "write")))
    (setq mallow-driver-mode-keywords
          (list
           (list (concat "^%\\s *\\(}\\|\\(" keywords "\\)\\>\\).*$")
                 '(0 font-lock-keyword-face))
           (list "^%\\s *\\(#.*\\|\\)$"
                 '(0 font-lock-comment-face))
           (list "^%"
                 '(0 font-lock-keyword-face))
           (list "^|?\\(.+\\)$" '(1 mallow-driver-text-face))
           (list "\\${[^}]*}"
                 '(0 mallow-driver-substitution-face t)))))
  (setq font-lock-defaults
        '(mallow-driver-mode-keywords nil nil nil nil))
  (modify-syntax-entry ?\" "_" mallow-driver-mode-syntax-table)
  (modify-syntax-entry ?\n ">" mallow-driver-mode-syntax-table)
  (setq comment-start "%# ")
  (setq comment-end "")
  (run-hooks 'mallow-driver-mode-hook))

(add-hook 'mallow-driver-hook 'mdw-misc-mode-config t)

;;;--------------------------------------------------------------------------
;;; NFast debugs.

(defun nfast-debug-mode ()
  (interactive)
  (fundamental-mode)
  (setq major-mode 'nfast-debug-mode)
  (setq mode-name "NFast debug")
  (setq messages-mode-syntax-table (make-syntax-table))
  (set-syntax-table messages-mode-syntax-table)
  (make-local-variable 'font-lock-defaults)
  (make-local-variable 'nfast-debug-mode-keywords)
  (setq truncate-lines t)
  (setq nfast-debug-mode-keywords
        (list
         '("^\\(NFast_\\(Connect\\|Disconnect\\|Submit\\|Wait\\)\\)"
           (0 font-lock-keyword-face))
         (list (concat "^[ \t]+\\(\\("
                       "[0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F]"
                       "[0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F]"
                       "[ \t]+\\)*"
                       "[0-9a-fA-F]+\\)[ \t]*$")
           '(0 mdw-number-face))
         '("^[ \t]+\.status=[ \t]+\\<\\(OK\\)\\>"
           (1 font-lock-keyword-face))
         '("^[ \t]+\.status=[ \t]+\\<\\([a-zA-Z][0-9a-zA-Z]*\\)\\>"
           (1 font-lock-warning-face))
         '("^[ \t]+\.status[ \t]+\\<\\(zero\\)\\>"
           (1 nil))
         (list (concat "^[ \t]+\\.cmd=[ \t]+"
                       "\\<\\([a-zA-Z][0-9a-zA-Z]*\\)\\>")
           '(1 font-lock-keyword-face))
         '("-?\\<\\([0-9]+\\|0x[0-9a-fA-F]+\\)\\>" (0 mdw-number-face))
         '("^\\([ \t]+[a-z0-9.]+\\)" (0 font-lock-variable-name-face))
         '("\\<\\([a-z][a-z0-9.]+\\)\\>=" (1 font-lock-variable-name-face))
         '("\\(\\s.\\|\\s(\\|\\s)\\|\\s\\\\|\\s/\\)" (0 mdw-punct-face))))
  (setq font-lock-defaults
        '(nfast-debug-mode-keywords nil nil nil nil))
  (run-hooks 'nfast-debug-mode-hook))

;;;--------------------------------------------------------------------------
;;; Other languages.

;; Smalltalk.

(defun mdw-setup-smalltalk ()
  (and mdw-auto-indent
       (local-set-key "\C-m" 'smalltalk-newline-and-indent))
  (make-local-variable 'mdw-auto-indent)
  (setq mdw-auto-indent nil)
  (local-set-key "\C-i" 'smalltalk-reindent))

(defun mdw-fontify-smalltalk ()
  (make-local-variable 'font-lock-keywords)
  (setq font-lock-keywords
        (list
         (list "\\<[A-Z][a-zA-Z0-9]*\\>"
               '(0 font-lock-keyword-face))
         (list (concat "\\<0\\([xX][0-9a-fA-F_]+\\|[0-7_]+\\)\\|"
                       "[0-9][0-9_]*\\(\\.[0-9_]*\\|\\)"
                       "\\([eE]\\([-+]\\|\\)[0-9_]+\\|\\)")
               '(0 mdw-number-face))
         (list "\\(\\s.\\|\\s(\\|\\s)\\|\\s\\\\|\\s/\\)"
               '(0 mdw-punct-face))))
  (mdw-post-config-mode-hack))

;; Lispy languages.

;; Unpleasant bodge.
(unless (boundp 'slime-repl-mode-map)
  (setq slime-repl-mode-map (make-sparse-keymap)))

(defun mdw-indent-newline-and-indent ()
  (interactive)
  (indent-for-tab-command)
  (newline-and-indent))

(eval-after-load "cl-indent"
  '(progn
     (mapc #'(lambda (pair)
               (put (car pair)
                    'common-lisp-indent-function
                    (cdr pair)))
      '((destructuring-bind . ((&whole 4 &rest 1) 4 &body))
        (multiple-value-bind . ((&whole 4 &rest 1) 4 &body))))))

(defun mdw-common-lisp-indent ()
  (make-local-variable 'lisp-indent-function)
  (setq lisp-indent-function 'common-lisp-indent-function))

(setq lisp-simple-loop-indentation 2
      lisp-loop-keyword-indentation 6
      lisp-loop-forms-indentation 6)

(defun mdw-fontify-lispy ()

  ;; Set fill prefix.
  (mdw-standard-fill-prefix "\\([ \t]*;+[ \t]*\\)")

  ;; Not much fontification needed.
  (make-local-variable 'font-lock-keywords)
  (setq font-lock-keywords
        (list (list (concat "\\("
                            "\\_<[-+]?"
                            "\\(" "[0-9]+/[0-9]+"
                            "\\|" "\\(" "[0-9]+" "\\(\\.[0-9]*\\)?" "\\|"
                                        "\\.[0-9]+" "\\)"
                                  "\\([dDeEfFlLsS][-+]?[0-9]+\\)?"
                            "\\)"
                            "\\|"
                            "#"
                            "\\(" "x" "[-+]?"
                                  "[0-9A-Fa-f]+" "\\(/[0-9A-Fa-f]+\\)?"
                            "\\|" "o" "[-+]?" "[0-7]+" "\\(/[0-7]+\\)?"
                            "\\|" "b" "[-+]?" "[01]+" "\\(/[01]+\\)?"
                            "\\|" "[0-9]+" "r" "[-+]?"
                                  "[0-9a-zA-Z]+" "\\(/[0-9a-zA-Z]+\\)?"
                            "\\)"
                            "\\)\\_>")
                    '(0 mdw-number-face))
              (list "\\(\\s.\\|\\s(\\|\\s)\\|\\s\\\\|\\s/\\)"
                    '(0 mdw-punct-face))))

  (mdw-post-config-mode-hack))

(defun comint-send-and-indent ()
  (interactive)
  (comint-send-input)
  (and mdw-auto-indent
       (indent-for-tab-command)))

(defun mdw-setup-m4 ()
  (mdw-standard-fill-prefix "\\([ \t]*\\(?:#+\\|\\<dnl\\>\\)[ \t]*\\)"))

;;;--------------------------------------------------------------------------
;;; Text mode.

(defun mdw-text-mode ()
  (setq fill-column 72)
  (flyspell-mode t)
  (mdw-standard-fill-prefix
   "\\([ \t]*\\([>#|:] ?\\)*[ \t]*\\)" 3)
  (auto-fill-mode 1))

;;;--------------------------------------------------------------------------
;;; Outline and hide/show modes.

(defun mdw-outline-collapse-all ()
  "Completely collapse everything in the entire buffer."
  (interactive)
  (save-excursion
    (goto-char (point-min))
    (while (< (point) (point-max))
      (hide-subtree)
      (forward-line))))

(setq hs-hide-comments-when-hiding-all nil)

(defadvice hs-hide-all (after hide-first-comment activate)
  (save-excursion (hs-hide-initial-comment-block)))

;;;--------------------------------------------------------------------------
;;; Shell mode.

(defun mdw-sh-mode-setup ()
  (local-set-key [?\C-a] 'comint-bol)
  (add-hook 'comint-output-filter-functions
            'comint-watch-for-password-prompt))

(defun mdw-term-mode-setup ()
  (setq term-prompt-regexp shell-prompt-pattern)
  (make-local-variable 'mouse-yank-at-point)
  (make-local-variable 'transient-mark-mode)
  (setq mouse-yank-at-point t)
  (auto-fill-mode -1)
  (setq tab-width 8))

(defun term-send-meta-right () (interactive) (term-send-raw-string "\e\e[C"))
(defun term-send-meta-left  () (interactive) (term-send-raw-string "\e\e[D"))
(defun term-send-ctrl-uscore () (interactive) (term-send-raw-string "\C-_"))
(defun term-send-meta-meta-something ()
  (interactive)
  (term-send-raw-string "\e\e")
  (term-send-raw))
(eval-after-load 'term
  '(progn
     (define-key term-raw-map [?\e ?\e] nil)
     (define-key term-raw-map [?\e ?\e t] 'term-send-meta-meta-something)
     (define-key term-raw-map [?\C-/] 'term-send-ctrl-uscore)
     (define-key term-raw-map [M-right] 'term-send-meta-right)
     (define-key term-raw-map [?\e ?\M-O ?C] 'term-send-meta-right)
     (define-key term-raw-map [M-left] 'term-send-meta-left)
     (define-key term-raw-map [?\e ?\M-O ?D] 'term-send-meta-left)))

(defadvice term-exec (before program-args-list compile activate)
  "If the PROGRAM argument is a list, interpret it as (PROGRAM . SWITCHES).
This allows you to pass a list of arguments through `ansi-term'."
  (let ((program (ad-get-arg 2)))
    (if (listp program)
        (progn
          (ad-set-arg 2 (car program))
          (ad-set-arg 4 (cdr program))))))

(defun ssh (host)
  "Open a terminal containing an ssh session to the HOST."
  (interactive "sHost: ")
  (ansi-term (list "ssh" host) (format "ssh@%s" host)))

;;;--------------------------------------------------------------------------
;;; Inferior Emacs Lisp.

(setq comint-prompt-read-only t)

(eval-after-load "comint"
  '(progn
     (define-key comint-mode-map "\C-w" 'comint-kill-region)
     (define-key comint-mode-map [C-S-backspace] 'comint-kill-whole-line)))

(eval-after-load "ielm"
  '(progn
     (define-key ielm-map "\C-w" 'comint-kill-region)
     (define-key ielm-map [C-S-backspace] 'comint-kill-whole-line)))

;;;----- That's all, folks --------------------------------------------------

(provide 'dot-emacs)