[profile] / el / dot-emacs.el

;;; -*- 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.

(defun mdw-check-command-line-switch (switch)
  (let ((probe nil) (next command-line-args) (found nil))
    (while next
      (cond ((string= (car next) switch)
             (setq found t)
             (if probe (rplacd probe (cdr next))
               (setq command-line-args (cdr next))))
            (t
             (setq probe next)))
      (setq next (cdr next)))
    found))

(defvar mdw-fast-startup nil
  "Whether .emacs should optimize for rapid startup.
This may be at the expense of cool features.")
(setq mdw-fast-startup
      (mdw-check-command-line-switch "--mdw-fast-startup"))

(defvar mdw-splashy-startup nil
  "Whether to show a splash screen and related frippery.")
(setq mdw-splashy-startup
      (mdw-check-command-line-switch "--mdw-splashy-startup"))

;;;--------------------------------------------------------------------------
;;; 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))

(defun mdw-wrong ()
  "This is not the key sequence you're looking for."
  (interactive)
  (error "wrong button"))

(defun mdw-emacs-version-p (major &optional minor)
  "Return non-nil if the running Emacs is at least version MAJOR.MINOR."
  (or (> emacs-major-version major)
      (and (= emacs-major-version major)
           (>= emacs-minor-version (or minor 0)))))

;; 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)))

;; Width configuration.

(defvar mdw-column-width
  (string-to-number (or (mdw-config 'emacs-width) "77"))
  "Width of Emacs columns.")
(defvar mdw-text-width mdw-column-width
  "Expected width of text within columns.")
(put 'mdw-text-width 'safe-local-variable 'integerp)

;; Local variables hacking.

(defun run-local-vars-mode-hook ()
  "Run a hook for the major-mode after local variables have been processed."
  (run-hooks (intern (concat (symbol-name major-mode)
                             "-local-variables-hook"))))
(add-hook 'hack-local-variables-hook 'run-local-vars-mode-hook)

;; 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)))

;; Page motion.

(defun mdw-fixup-page-position ()
  (unless (eq (char-before (point)) ?\f)
    (forward-line 0)))

(defadvice backward-page (after mdw-fixup compile activate)
  (mdw-fixup-page-position))
(defadvice forward-page (after mdw-fixup compile activate)
  (mdw-fixup-page-position))

;; 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-preferred-column-width ()
  "Return the preferred column width."
  (if (and window-system (mdw-emacs-version-p 22)) mdw-column-width
    (1+ mdw-column-width)))

(defun mdw-divvy-window (&optional width)
  "Split a wide window into appropriate widths."
  (interactive "P")
  (setq width (if width (prefix-numeric-value width)
                (mdw-preferred-column-width)))
  (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)))

(defun mdw-set-frame-width (columns &optional width)
  (interactive "nColumns: 
P")
  (setq width (if width (prefix-numeric-value width)
                (mdw-preferred-column-width)))
  (let ((sb-width (mdw-horizontal-window-overhead)))
    (set-frame-width (selected-frame)
                     (- (* columns (+ width sb-width))
                        sb-width))
    (mdw-divvy-window width)))

(defvar mdw-frame-width-fudge
  (cond ((<= emacs-major-version 20) 1)
        ((= emacs-major-version 26) 3)
        (t 0))
  "The number of extra columns to add to the desired frame width.

This is sadly necessary because Emacs 26 is broken in this regard.")

;; Don't raise windows unless I say so.

(defvar mdw-inhibit-raise-frame nil
  "*Whether `raise-frame' should do nothing when the frame is mapped.")

(defadvice raise-frame
    (around mdw-inhibit (&optional frame) activate compile)
  "Don't actually do anything if `mdw-inhibit-raise-frame' is true, and the
frame is actually mapped on the screen."
  (if mdw-inhibit-raise-frame
      (make-frame-visible frame)
    ad-do-it))

(defmacro mdw-advise-to-inhibit-raise-frame (function)
  "Advise the FUNCTION not to raise frames, even if it wants to."
  `(defadvice ,function
       (around mdw-inhibit-raise (&rest hunoz) activate compile)
     "Don't raise the window unless you have to."
     (let ((mdw-inhibit-raise-frame t))
       ad-do-it)))

(mdw-advise-to-inhibit-raise-frame select-frame-set-input-focus)
(mdw-advise-to-inhibit-raise-frame appt-disp-window)
(mdw-advise-to-inhibit-raise-frame mouse-select-window)

;; Bug fix for markdown-mode, which breaks point positioning during
;; `query-replace'.
(defadvice markdown-check-change-for-wiki-link
    (around mdw-save-match activate compile)
  "Save match data around the `markdown-mode' `after-change-functions' hook."
  (save-match-data ad-do-it))

;; Bug fix for `bbdb-canonicalize-address': on Emacs 24, `run-hook-with-args'
;; always returns nil, with the result that all email addresses are lost.
;; Replace the function entirely.
(defadvice bbdb-canonicalize-address
    (around mdw-bug-fix activate compile)
  "Don't use `run-hook-with-args', because that doesn't work."
  (let ((net (ad-get-arg 0)))

    ;; Make sure this is a proper hook list.
    (if (functionp bbdb-canonicalize-net-hook)
        (setq bbdb-canonicalize-net-hook (list bbdb-canonicalize-net-hook)))

    ;; Iterate over the hooks until things converge.
    (let ((donep nil))
      (while (not donep)
        (let (next (changep nil)
              hook (hooks bbdb-canonicalize-net-hook))
          (while hooks
            (setq hook (pop hooks))
            (setq next (funcall hook net))
            (if (not (equal next net))
                (setq changep t
                      net next)))
          (setq donep (not changep)))))
    (setq ad-return-value net)))

;; 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-not-org-mode (form)
  "As FORM, but not in Org mode agenda."
  (and (not mdw-diary-for-org-mode-p)
       (eval form)))

(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-discordian-date (date)
  "Return the Discordian calendar date corresponding to DATE.

The return value is (YOLD . st-tibs-day) or (YOLD SEASON DAYNUM DOW).

The original is by David Pearson.  I modified it to produce date components
as output rather than a string."
  (let* ((days ["Sweetmorn" "Boomtime" "Pungenday"
                "Prickle-Prickle" "Setting Orange"])
         (months ["Chaos" "Discord" "Confusion"
                  "Bureaucracy" "Aftermath"])
         (day-count [0 31 59 90 120 151 181 212 243 273 304 334])
         (year (- (calendar-extract-year date) 1900))
         (month (1- (calendar-extract-month date)))
         (day (1- (calendar-extract-day date)))
         (julian (+ (aref day-count month) day))
         (dyear (+ year 3066)))
    (if (and (= month 1) (= day 28))
        (cons dyear 'st-tibs-day)
      (list dyear
            (aref months (floor (/ julian 73)))
            (1+ (mod julian 73))
            (aref days (mod julian 5))))))

(defun mdw-diary-discordian-date ()
  "Convert the date in `date' to a string giving the Discordian date."
  (let* ((ddate (mdw-discordian-date date))
         (tail (format "in the YOLD %d" (car ddate))))
    (if (eq (cdr ddate) 'st-tibs-day)
        (format "St Tib's Day %s" tail)
      (let ((season (cadr ddate))
            (daynum (caddr ddate))
            (dayname (cadddr ddate)))
      (format "%s, the %d%s day of %s %s"
              dayname
              daynum
              (let ((ldig (mod daynum 10)))
                (cond ((= ldig 1) "st")
                      ((= ldig 2) "nd")
                      ((= ldig 3) "rd")
                      (t "th")))
              season
              tail)))))

(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)))

(defvar mdw-diary-for-org-mode-p nil)

(defadvice org-agenda-list (around mdw-preserve-links activate)
  (let ((mdw-diary-for-org-mode-p t))
    ad-do-it))

(defvar diary-time-regexp nil)

(defadvice diary-add-to-list (before mdw-trim-leading-space compile activate)
  "Trim leading space from the diary entry string."
  (save-match-data
    (let ((str (ad-get-arg 1))
          (done nil) old)
      (while (not done)
        (setq old str)
        (setq str (cond ((null str) nil)
                        ((string-match "\\(^\\|\n\\)[ \t]+" str)
                         (replace-match "\\1" nil nil str))
                        ((and mdw-diary-for-org-mode-p
                              (string-match (concat
                                             "\\(^\\|\n\\)"
                                             "\\(" diary-time-regexp
                                             "\\(-" diary-time-regexp "\\)?"
                                             "\\)"
                                             "\\(\t[ \t]*\\| [ \t]+\\)")
                                            str))
                         (replace-match "\\1\\2 " nil nil str))
                        ((and (not mdw-diary-for-org-mode-p)
                              (string-match "\\[\\[[^][]*]\\[\\([^][]*\\)]]"
                                            str))
                         (replace-match "\\1" nil nil str))
                        (t str)))
        (if (equal str old) (setq done t)))
      (ad-set-arg 1 str))))

(defadvice org-bbdb-anniversaries (after mdw-fixup-list compile activate)
  "Return a string rather than a list."
  (with-temp-buffer
    (let ((anyp nil))
      (dolist (e (let ((ee ad-return-value))
                   (if (atom ee) (list ee) ee)))
        (when e
          (when anyp (insert ?\n))
          (insert e)
          (setq anyp t)))
      (setq ad-return-value
              (and anyp (buffer-string))))))

;; 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))))))

(defvar mdw-org-latex-defs
  '(("strayman"
     "\\documentclass{strayman}
\\usepackage[utf8]{inputenc}
\\usepackage[palatino, helvetica, courier, maths=cmr]{mdwfonts}
\\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}"))))

(eval-after-load "org-latex"
  '(setq org-export-latex-classes
           (append mdw-org-latex-defs org-export-latex-classes)))

(eval-after-load "ox-latex"
  '(setq org-latex-classes (append mdw-org-latex-defs org-latex-classes)
         org-latex-default-packages-alist '(("AUTO" "inputenc" t)
                                            ("T1" "fontenc" t)
                                            ("" "fixltx2e" nil)
                                            ("" "graphicx" t)
                                            ("" "longtable" nil)
                                            ("" "float" nil)
                                            ("" "wrapfig" nil)
                                            ("" "rotating" nil)
                                            ("normalem" "ulem" t)
                                            ("" "textcomp" t)
                                            ("" "marvosym" t)
                                            ("" "wasysym" t)
                                            ("" "amssymb" t)
                                            ("" "hyperref" nil)
                                            "\\tolerance=1000")))


(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")

;; Glasses.

(setq glasses-separator "-"
      glasses-separate-parentheses-p nil
      glasses-uncapitalize-p t)

;; Some hacks to do with window placement.

(defun mdw-clobber-other-windows-showing-buffer (buffer-or-name)
  "Arrange that no windows on other frames are showing BUFFER-OR-NAME."
  (interactive "bBuffer: ")
  (let ((home-frame (selected-frame))
        (buffer (get-buffer buffer-or-name))
        (safe-buffer (get-buffer "*scratch*")))
    (dolist (frame (frame-list))
      (unless (eq frame home-frame)
        (dolist (window (window-list frame))
          (when (eq (window-buffer window) buffer)
            (set-window-buffer window safe-buffer)))))))

(defvar mdw-inhibit-walk-windows nil
  "If non-nil, then `walk-windows' does nothing.
This is used by advice on `switch-to-buffer-other-frame' to inhibit finding
buffers in random frames.")

(setq display-buffer--other-frame-action
        '((display-buffer-reuse-window display-buffer-pop-up-frame)
          (reusable-frames . nil)
          (inhibit-same-window . t)))

(defadvice walk-windows (around mdw-inhibit activate)
  "If `mdw-inhibit-walk-windows' is non-nil, then do nothing."
  (and (not mdw-inhibit-walk-windows)
       ad-do-it))

(defadvice switch-to-buffer-other-frame
    (around mdw-always-new-frame activate)
  "Always make a new frame.
Even if an existing window in some random frame looks tempting."
  (let ((mdw-inhibit-walk-windows t)) ad-do-it))

(defadvice display-buffer (before mdw-inhibit-other-frames activate)
  "Don't try to do anything fancy with other frames.
Pretend they don't exist.  They might be on other display devices."
  (ad-set-arg 2 nil))

(setq even-window-sizes nil
      even-window-heights nil)

;; Rename buffers along with files.

(defvar mdw-inhibit-rename-buffer nil
  "If non-nil, `rename-file' won't rename the buffer visiting the file.")

(defmacro mdw-advise-to-inhibit-rename-buffer (function)
  "Advise FUNCTION to set `mdw-inhibit-rename-buffer' while it runs.

This will prevent `rename-file' from renaming the buffer."
  `(defadvice ,function (around mdw-inhibit-rename-buffer compile activate)
     "Don't rename the buffer when renaming the underlying file."
     (let ((mdw-inhibit-rename-buffer t))
       ad-do-it)))
(mdw-advise-to-inhibit-rename-buffer recode-file-name)
(mdw-advise-to-inhibit-rename-buffer set-visited-file-name)
(mdw-advise-to-inhibit-rename-buffer backup-buffer)

(defadvice rename-file (after mdw-rename-buffers (from to &optional forcep)
                        compile activate)
  "If a buffer is visiting the file, rename it to match the new name.

Don't do this if `mdw-inhibit-rename-buffer' is non-nil."
  (unless mdw-inhibit-rename-buffer
    (let ((buffer (get-file-buffer from)))
      (when buffer
        (let ((to (if (not (directory-name-p to)) to
                    (concat to (file-name-nondirectory from)))))
          (with-current-buffer buffer
            (set-visited-file-name to nil t)))))))

;;;--------------------------------------------------------------------------
;;; Improved compilation machinery.

;; Uprated version of M-x compile.

(setq compile-command
        (let ((ncpu (with-temp-buffer
                      (insert-file-contents "/proc/cpuinfo")
                      (buffer-string)
                      (count-matches "^processor\\s-*:"))))
          (format "make -j%d -k" (* 2 ncpu))))

(defun mdw-compilation-buffer-name (mode)
  (concat "*" (downcase mode) ": "
          (abbreviate-file-name default-directory) "*"))
(setq compilation-buffer-name-function 'mdw-compilation-buffer-name)

(eval-after-load "compile"
  '(progn
     (define-key compilation-shell-minor-mode-map "\C-c\M-g" 'recompile)))

(defadvice compile (around hack-environment compile activate)
  "Hack the environment inherited by inferiors in the compilation."
  (let ((process-environment (copy-tree process-environment)))
    (setenv "LD_PRELOAD" nil)
    ad-do-it))

(defun mdw-compile (command &optional directory comint)
  "Initiate a compilation COMMAND, maybe in a different DIRECTORY.
The DIRECTORY may be nil to not change.  If COMINT is t, then
start an interactive compilation.

Interactively, prompt for the command if the variable
`compilation-read-command' is non-nil, or if requested through
the prefix argument.  Prompt for the directory, and run
interactively, if requested through the prefix.

Use a prefix of 4, 6, 12, or 14, or type C-u between one and three times, to
force prompting for a directory.

Use a prefix of 2, 6, 10, or 14, or type C-u three times, to force
prompting for the command.

Use a prefix of 8, 10, 12, or 14, or type C-u twice or three times,
to force interactive compilation."
  (interactive
   (let* ((prefix (prefix-numeric-value current-prefix-arg))
          (command (eval compile-command))
          (dir (and (plusp (logand prefix #x54))
                    (read-directory-name "Compile in directory: "))))
     (list (if (or compilation-read-command
                   (plusp (logand prefix #x42)))
               (compilation-read-command command)
             command)
           dir
           (plusp (logand prefix #x58)))))
  (let ((default-directory (or directory default-directory)))
    (compile command comint)))

;; Flymake support.

(defun mdw-find-build-dir (build-file)
  (catch 'found
    (let* ((src-dir (file-name-as-directory (expand-file-name ".")))
           (dir src-dir))
      (loop
        (when (file-exists-p (concat dir build-file))
          (throw 'found dir))
        (let ((sub (expand-file-name (file-relative-name src-dir dir)
                                     (concat dir "build/"))))
          (catch 'give-up
            (loop
              (when (file-exists-p (concat sub build-file))
                (throw 'found sub))
              (when (string= sub dir) (throw 'give-up nil))
              (setq sub (file-name-directory (directory-file-name sub))))))
        (when (string= dir
                       (setq dir (file-name-directory
                                  (directory-file-name dir))))
          (throw 'found nil))))))

(defun mdw-flymake-make-init ()
  (let ((build-dir (mdw-find-build-dir "Makefile")))
    (and build-dir
         (let ((tmp-src (flymake-init-create-temp-buffer-copy
                         #'flymake-create-temp-inplace)))
           (flymake-get-syntax-check-program-args
            tmp-src build-dir t t
            #'flymake-get-make-cmdline)))))

(setq flymake-allowed-file-name-masks
        '(("\\.\\(?:[cC]\\|cc\\|cpp\\|cxx\\|c\\+\\+\\)\\'"
           mdw-flymake-make-init)
          ("\\.\\(?:[hH]\\|hh\\|hpp\\|hxx\\|h\\+\\+\\)\\'"
           mdw-flymake-master-make-init)
          ("\\.p[lm]" flymake-perl-init)))

(setq flymake-mode-map
        (let ((map (if (boundp 'flymake-mode-map)
                       flymake-mode-map
                     (make-sparse-keymap))))
          (define-key map [?\C-c ?\C-f ?\C-p] 'flymake-goto-prev-error)
          (define-key map [?\C-c ?\C-f ?\C-n] 'flymake-goto-next-error)
          (define-key map [?\C-c ?\C-f ?\C-c] 'flymake-compile)
          (define-key map [?\C-c ?\C-f ?\C-k] 'flymake-stop-all-syntax-checks)
          (define-key map [?\C-c ?\C-f ?\C-e] 'flymake-popup-current-error-menu)
          map))

;;;--------------------------------------------------------------------------
;;; 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)))))

;; AUTHINFO GENERIC kludge.

(defvar nntp-authinfo-generic nil
  "Set to the `NNTPAUTH' string to pass on to `authinfo-kludge'.

Use this to arrange for per-server settings.")

(defun nntp-open-authinfo-kludge (buffer)
  "Open a connection to SERVER using `authinfo-kludge'."
  (let ((proc (start-process "nntpd" buffer
                             "env" (concat "NNTPAUTH="
                                           (or nntp-authinfo-generic
                                               (getenv "NNTPAUTH")
                                               (error "NNTPAUTH unset")))
                             "authinfo-kludge" nntp-address)))
    (set-buffer buffer)
    (nntp-wait-for-string "^\r*200")
    (beginning-of-line)
    (delete-region (point-min) (point))
    proc))

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

;; Heavy-duty Gnus patching.

(defun mdw-nnimap-transform-headers ()
  (goto-char (point-min))
  (let (article lines size string)
    (block nil
      (while (not (eobp))
        (while (not (looking-at "\\* [0-9]+ FETCH"))
          (delete-region (point) (progn (forward-line 1) (point)))
          (when (eobp)
            (return)))
        (goto-char (match-end 0))
        ;; Unfold quoted {number} strings.
        (while (re-search-forward
                "[^]][ (]{\\([0-9]+\\)}\r?\n"
                (save-excursion
                  ;; Start of the header section.
                  (or (re-search-forward "] {[0-9]+}\r?\n" nil t)
                      ;; Start of the next FETCH.
                      (re-search-forward "\\* [0-9]+ FETCH" nil t)
                      (point-max)))
                t)
          (setq size (string-to-number (match-string 1)))
          (delete-region (+ (match-beginning 0) 2) (point))
          (setq string (buffer-substring (point) (+ (point) size)))
          (delete-region (point) (+ (point) size))
          (insert (format "%S" (subst-char-in-string ?\n ?\s string)))
          ;; [mdw] missing from upstream
          (backward-char 1))
        (beginning-of-line)
        (setq article
                (and (re-search-forward "UID \\([0-9]+\\)"
                                        (line-end-position)
                                        t)
                     (match-string 1)))
        (setq lines nil)
        (setq size
                (and (re-search-forward "RFC822.SIZE \\([0-9]+\\)"
                                        (line-end-position)
                                        t)
                     (match-string 1)))
        (beginning-of-line)
        (when (search-forward "BODYSTRUCTURE" (line-end-position) t)
          (let ((structure (ignore-errors
                             (read (current-buffer)))))
            (while (and (consp structure)
                        (not (atom (car structure))))
              (setq structure (car structure)))
            (setq lines (if (and
                             (stringp (car structure))
                             (equal (upcase (nth 0 structure)) "MESSAGE")
                             (equal (upcase (nth 1 structure)) "RFC822"))
                            (nth 9 structure)
                          (nth 7 structure)))))
        (delete-region (line-beginning-position) (line-end-position))
        (insert (format "211 %s Article retrieved." article))
        (forward-line 1)
        (when size
          (insert (format "Chars: %s\n" size)))
        (when lines
          (insert (format "Lines: %s\n" lines)))
        ;; Most servers have a blank line after the headers, but
        ;; Davmail doesn't.
        (unless (re-search-forward "^\r$\\|^)\r?$" nil t)
          (goto-char (point-max)))
        (delete-region (line-beginning-position) (line-end-position))
        (insert ".")
        (forward-line 1)))))

(eval-after-load 'nnimap
  '(defalias 'nnimap-transform-headers
     (symbol-function 'mdw-nnimap-transform-headers)))

(defadvice gnus-other-frame (around mdw-hack-frame-width compile activate)
  "Always arrange for mail/news frames to be 80 columns wide."
  (let ((default-frame-alist (cons `(width . ,(+ 80 mdw-frame-width-fudge))
                                   (cl-delete 'width default-frame-alist
                                              :key #'car))))
    ad-do-it))

;; Preferred programs.

(setq mailcap-user-mime-data
        '(((type . "application/pdf") (viewer . "mupdf %s"))))

;;;--------------------------------------------------------------------------
;;; 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-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)))
              (t (throw 'done nil)))))))

(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))

(defun mdw-auto-revert ()
  "Recheck all of the autorevertable buffers, and update VC modelines."
  (interactive)
  (let ((auto-revert-check-vc-info t))
    (auto-revert-buffers)))

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

(defadvice comint-line-beginning-position
    (around mdw-calculate-it-properly () activate compile)
  "Calculate the actual line start for multi-line input."
  (if (or comint-use-prompt-regexp
          (eq (field-at-pos (point)) 'output))
      ad-do-it
    (setq ad-return-value
            (constrain-to-field (line-beginning-position) (point)))))

;;;--------------------------------------------------------------------------
;;; 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)))

(defun mdw-dired-run (args &optional syncp)
  (interactive (let ((file (dired-get-filename t)))
                 (list (read-string (format "Arguments for %s: " file))
                       current-prefix-arg)))
  (funcall (if syncp 'shell-command 'async-shell-command)
           (concat (shell-quote-argument (dired-get-filename nil))
                   " " args)))

(defadvice dired-do-flagged-delete
    (around mdw-delete-if-prefix-argument activate compile)
  (let ((delete-by-moving-to-trash (and (null current-prefix-arg)
                                        delete-by-moving-to-trash)))
    ad-do-it))

(eval-after-load "dired"
  '(define-key dired-mode-map "X" 'mdw-dired-run))

;;;--------------------------------------------------------------------------
;;; 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)))))

(eval-after-load 'w3m
  '(define-key w3m-mode-map [?\e ?\r] 'w3m-view-this-url-new-session))

(defvar mdw-good-url-browsers
  '(browse-url-mozilla
    browse-url-generic
    (w3m . mdw-w3m-browse-url)
    browse-url-w3)
  "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 `PATTERN . PREFIX'; if
the PATTERN matches, the PREFIX is used to set the fill prefix.

A PATTERN is one of the following.

  * STRING -- a regular expression, expected to match at point
  * (eval . FORM) -- a Lisp form which must evaluate non-nil
  * (if COND CONSEQ-PAT ALT-PAT) -- if COND evaluates non-nil, must match
    CONSEQ-PAT; otherwise must match ALT-PAT
  * (and PATTERN ...) -- must match all of the PATTERNs
  * (or PATTERN ...) -- must match at least one PATTERN
  * (not PATTERN) -- mustn't match (probably not useful)

A PREFIX is a list of the following kinds 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

Information about `bracketed subexpressions' comes from the match data,
as modified during matching.")

(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'.")

;; 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-fill-prefix-match-p (pat)
  "Return non-nil if PAT matches at the current position."
  (cond ((stringp pat) (looking-at pat))
        ((not (consp pat)) (error "Unknown pattern item `%S'" pat))
        ((eq (car pat) 'eval) (eval (cdr pat)))
        ((eq (car pat) 'if)
         (if (or (null (cdr pat))
                 (null (cddr pat))
                 (null (cdddr pat))
                 (cddddr pat))
             (error "Invalid `if' pattern `%S'" pat))
         (mdw-fill-prefix-match-p (if (eval (cadr pat))
                                      (caddr pat)
                                    (cadddr pat))))
        ((eq (car pat) 'and)
         (let ((pats (cdr pat))
               (ok t))
           (while (and pats
                       (or (mdw-fill-prefix-match-p (car pats))
                           (setq ok nil)))
             (setq pats (cdr pats)))
           ok))
        ((eq (car pat) 'or)
         (let ((pats (cdr pat))
               (ok nil))
           (while (and pats
                       (or (not (mdw-fill-prefix-match-p (car pats)))
                           (progn (setq ok t) nil)))
             (setq pats (cdr pats)))
           ok))
        ((eq (car pat) 'not)
         (if (or (null (cdr pat)) (cddr pat))
             (error "Invalid `not' pattern `%S'" pat))
         (not (mdw-fill-prefix-match-p (car pats))))
        (t (error "Unknown pattern form `%S'" pat))))

(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-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."
  (let ((prefix nil))
    (while (cond ((null l) nil)
                 ((mdw-fill-prefix-match-p (caar l))
                  (setq prefix
                          (mdw-maybe-tabify
                           (apply #'concat
                                  (mapcar #'mdw-do-prefix-match
                                          (cdr (car l))))))
                  nil))
      (setq l (cdr l)))
    prefix))

(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))))))

(defadvice do-auto-fill (around mdw-dynamic-fill-prefix () activate compile)
  "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)))
    ad-do-it))

(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-point-within-string-p ()
  "Return non-nil if point is within a string."
  (let ((state (syntax-ppss)))
    (elt state 3)))

(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
          `(((if (mdw-point-within-string-p)
                 ,(concat "\\(\\s-*\\)" mdw-hanging-indents)
               ,(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)))

(defvar mdw-do-misc-mode-hacking nil)

(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))
             ((derived-mode-p 'slime-repl-mode 'asm-mode 'comint-mode)
              nil)
             (t
              (local-set-key "\C-m" 'newline-and-indent))))
  (set (make-local-variable 'mdw-do-misc-mode-hacking) t)
  (local-set-key [C-return] 'newline)
  (make-local-variable 'page-delimiter)
  (setq page-delimiter (concat       "^" "\f"
                               "\\|" "^"
                                     ".\\{0,4\\}"
                                     "-\\{5\\}"
                                     "\\(" " " ".*" " " "\\)?"
                                     "-+"
                                     ".\\{0,2\\}"
                                     "$"))
  (setq comment-column 40)
  (auto-fill-mode 1)
  (setq fill-column mdw-text-width)
  (flyspell-prog-mode)
  (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-local-vars-misc-mode-config ()
  (setq whitespace-line-column mdw-text-width)
  (when (and mdw-do-misc-mode-hacking
             (not buffer-read-only))
    (setq show-trailing-whitespace t)
    (mdw-whitespace-mode 1)))
(add-hook 'hack-local-variables-hook 'mdw-post-local-vars-misc-mode-config)

(defmacro mdw-advise-update-angry-fruit-salad (&rest funcs)
  `(progn ,@(mapcar (lambda (func)
                      `(defadvice ,func
                           (after mdw-angry-fruit-salad activate)
                         (when mdw-do-misc-mode-hacking
                           (setq show-trailing-whitespace
                                 (not buffer-read-only))
                           (mdw-whitespace-mode (if buffer-read-only 0 1)))))
                    funcs)))
(mdw-advise-update-angry-fruit-salad toggle-read-only
                                     read-only-mode
                                     view-mode
                                     view-mode-enable
                                     view-mode-disable)

(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)

;;;--------------------------------------------------------------------------
;;; Fullscreen-ness.

(defvar mdw-full-screen-parameters
  '((menu-bar-lines . 0)
    ;(vertical-scroll-bars . nil)
    )
  "Frame parameters to set when making a frame fullscreen.")

(defvar mdw-full-screen-save
  '(width height)
  "Extra frame parameters to save when setting fullscreen.")

(defun mdw-toggle-full-screen (&optional frame)
  "Show the FRAME fullscreen."
  (interactive)
  (when window-system
    (cond ((frame-parameter frame 'fullscreen)
           (set-frame-parameter frame 'fullscreen nil)
           (modify-frame-parameters
            nil
            (or (frame-parameter frame 'mdw-full-screen-saved)
                (mapcar (lambda (assoc)
                          (assq (car assoc) default-frame-alist))
                        mdw-full-screen-parameters))))
          (t
           (let ((saved (mapcar (lambda (param)
                                  (cons param (frame-parameter frame param)))
                                (append (mapcar #'car
                                                mdw-full-screen-parameters)
                                        mdw-full-screen-save))))
             (set-frame-parameter frame 'mdw-full-screen-saved saved))
           (modify-frame-parameters frame mdw-full-screen-parameters)
           (set-frame-parameter frame 'fullscreen 'fullboth)))))

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

(make-face 'mdw-virgin-face)

(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
     (copy-face 'mdw-virgin-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"))
(mdw-define-face fixed-pitch-serif
  (((type w32)) :family "courier new" :height 85 :weight bold)
  (((type x)) :family "6x13" :foundry "trad" :height 130 :weight bold)
  (t :foreground "white" :background "black" :weight bold))
(mdw-define-face variable-pitch
  (((type x)) :family "helvetica" :height 120))
(mdw-define-face region
  (((min-colors 64)) :background "grey30")
  (((class color)) :background "blue")
  (t :inverse-video t))
(mdw-define-face match
  (((class color)) :background "blue")
  (t :inverse-video t))
(mdw-define-face mc/cursor-face
  (((class color)) :background "red")
  (t :inverse-video t))
(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 nobreak-space
  (((type tty)))
  (t :inherit escape-glyph :underline t))
(mdw-define-face scroll-bar
  (t :foreground "black" :background "lightgrey"))
(mdw-define-face fringe
  (t :foreground "yellow"))
(mdw-define-face show-paren-match
  (((min-colors 64)) :background "darkgreen")
  (((class color)) :background "green")
  (t :underline t))
(mdw-define-face show-paren-mismatch
  (((class color)) :background "red")
  (t :inverse-video t))
(mdw-define-face highlight
  (((min-colors 64)) :background "DarkSeaGreen4")
  (((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 Man-underline
  (((type tty)) :underline t)
  (t :slant italic))

(mdw-define-face ido-subdir
  (t :foreground "cyan" :weight bold))

(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 whitespace-line
  (((class color)) :background "darkred")
  (t :inverse-video t))
(mdw-define-face mdw-punct-face
  (((min-colors 64)) :foreground "burlywood2")
  (((class color)) :foreground "yellow"))
(mdw-define-face mdw-number-face
  (t :foreground "yellow"))
(mdw-define-face mdw-trivial-face)
(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
  (((min-colors 64)) :slant italic :foreground "SeaGreen1")
  (((class color)) :foreground "green")
  (t :weight bold))
(mdw-define-face font-lock-comment-face
  (((min-colors 64)) :slant italic :foreground "SeaGreen1")
  (((class color)) :foreground "green")
  (t :weight bold))
(mdw-define-face font-lock-string-face
  (((min-colors 64)) :foreground "SkyBlue1")
  (((class color)) :foreground "cyan")
  (t :weight bold))

(mdw-define-face message-separator
  (t :background "red" :foreground "white" :weight bold))
(mdw-define-face message-cited-text
  (default :slant italic)
  (((min-colors 64)) :foreground "SkyBlue1")
  (((class color)) :foreground "cyan"))
(mdw-define-face message-header-cc
  (default :slant italic)
  (((min-colors 64)) :foreground "SeaGreen1")
  (((class color)) :foreground "green"))
(mdw-define-face message-header-newsgroups
  (default :slant italic)
  (((min-colors 64)) :foreground "SeaGreen1")
  (((class color)) :foreground "green"))
(mdw-define-face message-header-subject
  (((min-colors 64)) :foreground "SeaGreen1")
  (((class color)) :foreground "green"))
(mdw-define-face message-header-to
  (((min-colors 64)) :foreground "SeaGreen1")
  (((class color)) :foreground "green"))
(mdw-define-face message-header-xheader
  (default :slant italic)
  (((min-colors 64)) :foreground "SeaGreen1")
  (((class color)) :foreground "green"))
(mdw-define-face message-header-other
  (default :slant italic)
  (((min-colors 64)) :foreground "SeaGreen1")
  (((class color)) :foreground "green"))
(mdw-define-face message-header-name
  (default :weight bold)
  (((min-colors 64)) :foreground "SeaGreen1")
  (((class color)) :foreground "green"))

(mdw-define-face which-func
  (t nil))

(mdw-define-face gnus-header-name
  (default :weight bold)
  (((min-colors 64)) :foreground "SeaGreen1")
  (((class color)) :foreground "green"))
(mdw-define-face gnus-header-subject
  (((min-colors 64)) :foreground "SeaGreen1")
  (((class color)) :foreground "green"))
(mdw-define-face gnus-header-from
  (((min-colors 64)) :foreground "SeaGreen1")
  (((class color)) :foreground "green"))
(mdw-define-face gnus-header-to
  (((min-colors 64)) :foreground "SeaGreen1")
  (((class color)) :foreground "green"))
(mdw-define-face gnus-header-content
  (default :slant italic)
  (((min-colors 64)) :foreground "SeaGreen1")
  (((class color)) :foreground "green"))

(mdw-define-face gnus-cite-1
  (((min-colors 64)) :foreground "SkyBlue1")
  (((class color)) :foreground "cyan"))
(mdw-define-face gnus-cite-2
  (((min-colors 64)) :foreground "RoyalBlue2")
  (((class color)) :foreground "blue"))
(mdw-define-face gnus-cite-3
  (((min-colors 64)) :foreground "MediumOrchid")
  (((class color)) :foreground "magenta"))
(mdw-define-face gnus-cite-4
  (((min-colors 64)) :foreground "firebrick2")
  (((class color)) :foreground "red"))
(mdw-define-face gnus-cite-5
  (((min-colors 64)) :foreground "burlywood2")
  (((class color)) :foreground "yellow"))
(mdw-define-face gnus-cite-6
  (((min-colors 64)) :foreground "SeaGreen1")
  (((class color)) :foreground "green"))
(mdw-define-face gnus-cite-7
  (((min-colors 64)) :foreground "SlateBlue1")
  (((class color)) :foreground "cyan"))
(mdw-define-face gnus-cite-8
  (((min-colors 64)) :foreground "RoyalBlue2")
  (((class color)) :foreground "blue"))
(mdw-define-face gnus-cite-9
  (((min-colors 64)) :foreground "purple2")
  (((class color)) :foreground "magenta"))
(mdw-define-face gnus-cite-10
  (((min-colors 64)) :foreground "DarkOrange2")
  (((class color)) :foreground "red"))
(mdw-define-face gnus-cite-11
  (t :foreground "grey"))

(mdw-define-face gnus-emphasis-underline
  (((type tty)) :underline t)
  (t :slant italic))

(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
  (((min-colors 64)) :foreground "SkyBlue1")
  (((class color)) :foreground "cyan"))
(mdw-define-face diff-function
  (default :weight bold)
  (((min-colors 64)) :foreground "SkyBlue1")
  (((class color)) :foreground "cyan"))
(mdw-define-face diff-header
  (((min-colors 64)) :background "grey10"))
(mdw-define-face diff-added
  (((class color)) :foreground "green"))
(mdw-define-face diff-removed
  (((class color)) :foreground "red"))
(mdw-define-face diff-context
  (t nil))
(mdw-define-face diff-refine-change
  (((min-colors 64)) :background "RoyalBlue4")
  (t :underline t))
(mdw-define-face diff-refine-removed
  (((min-colors 64)) :background "#500")
  (t :underline t))
(mdw-define-face diff-refine-added
  (((min-colors 64)) :background "#050")
  (t :underline t))

(setq ediff-force-faces t)
(mdw-define-face ediff-current-diff-A
  (((min-colors 64)) :background "darkred")
  (((class color)) :background "red")
  (t :inverse-video t))
(mdw-define-face ediff-fine-diff-A
  (((min-colors 64)) :background "red3")
  (((class color)) :inverse-video t)
  (t :inverse-video nil))
(mdw-define-face ediff-even-diff-A
  (((min-colors 64)) :background "#300"))
(mdw-define-face ediff-odd-diff-A
  (((min-colors 64)) :background "#300"))
(mdw-define-face ediff-current-diff-B
  (((min-colors 64)) :background "darkgreen")
  (((class color)) :background "magenta")
  (t :inverse-video t))
(mdw-define-face ediff-fine-diff-B
  (((min-colors 64)) :background "green4")
  (((class color)) :inverse-video t)
  (t :inverse-video nil))
(mdw-define-face ediff-even-diff-B
  (((min-colors 64)) :background "#020"))
(mdw-define-face ediff-odd-diff-B
  (((min-colors 64)) :background "#020"))
(mdw-define-face ediff-current-diff-C
  (((min-colors 64)) :background "darkblue")
  (((class color)) :background "blue")
  (t :inverse-video t))
(mdw-define-face ediff-fine-diff-C
  (((min-colors 64)) :background "blue1")
  (((class color)) :inverse-video t)
  (t :inverse-video nil))
(mdw-define-face ediff-even-diff-C
  (((min-colors 64)) :background "#004"))
(mdw-define-face ediff-odd-diff-C
  (((min-colors 64)) :background "#004"))
(mdw-define-face ediff-current-diff-Ancestor
  (((min-colors 64)) :background "#630")
  (((class color)) :background "blue")
  (t :inverse-video t))
(mdw-define-face ediff-even-diff-Ancestor
  (((min-colors 64)) :background "#320"))
(mdw-define-face ediff-odd-diff-Ancestor
  (((min-colors 64)) :background "#320"))

(mdw-define-face magit-hash
  (((min-colors 64)) :foreground "grey40")
  (((class color)) :foreground "blue"))
(mdw-define-face magit-diff-hunk-heading
  (((min-colors 64)) :foreground "grey70" :background "grey25")
  (((class color)) :foreground "yellow"))
(mdw-define-face magit-diff-hunk-heading-highlight
  (((min-colors 64)) :foreground "grey70" :background "grey35")
  (((class color)) :foreground "yellow" :background "blue"))
(mdw-define-face magit-diff-added
  (((min-colors 64)) :foreground "#ddffdd" :background "#335533")
  (((class color)) :foreground "green"))
(mdw-define-face magit-diff-added-highlight
  (((min-colors 64)) :foreground "#cceecc" :background "#336633")
  (((class color)) :foreground "green" :background "blue"))
(mdw-define-face magit-diff-removed
  (((min-colors 64)) :foreground "#ffdddd" :background "#553333")
  (((class color)) :foreground "red"))
(mdw-define-face magit-diff-removed-highlight
  (((min-colors 64)) :foreground "#eecccc" :background "#663333")
  (((class color)) :foreground "red" :background "blue"))
(mdw-define-face magit-blame-heading
  (((min-colors 64)) :foreground "white" :background "grey25"
                     :weight normal :slant normal)
  (((class color)) :foreground "white" :background "blue"
                   :weight normal :slant normal))
(mdw-define-face magit-blame-name
  (t :inherit magit-blame-heading :slant italic))
(mdw-define-face magit-blame-date
  (((min-colors 64)) :inherit magit-blame-heading :foreground "grey60")
  (((class color)) :inherit magit-blame-heading :foreground "cyan"))
(mdw-define-face magit-blame-summary
  (t :inherit magit-blame-heading :weight bold))

(mdw-define-face dylan-header-background
  (((min-colors 64)) :background "NavyBlue")
  (((class color)) :background "blue"))

(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))

;;;--------------------------------------------------------------------------
;;; Where is point?

(mdw-define-face mdw-point-overlay-face
  (((type graphic)))
  (((min-colors 64)) :background "darkblue")
  (((class color)) :background "blue")
  (((type tty) (class mono)) :inverse-video t))

(defvar mdw-point-overlay-fringe-display '(vertical-bar . vertical-bar))

(defun mdw-configure-point-overlay ()
  (let ((ov (make-overlay 0 0)))
    (overlay-put ov 'priority 0)
    (let* ((fringe (or mdw-point-overlay-fringe-display (cons nil nil)))
           (left (car fringe)) (right (cdr fringe))
           (s ""))
      (when left
        (let ((ss "."))
          (put-text-property 0 1 'display `(left-fringe ,left) ss)
          (setq s (concat s ss))))
      (when right
        (let ((ss "."))
          (put-text-property 0 1 'display `(right-fringe ,right) ss)
          (setq s (concat s ss))))
      (when (or left right)
        (overlay-put ov 'before-string s)))
    (overlay-put ov 'face 'mdw-point-overlay-face)
    (delete-overlay ov)
    ov))

(defvar mdw-point-overlay (mdw-configure-point-overlay)
  "An overlay used for showing where point is in the selected window.")
(defun mdw-reconfigure-point-overlay ()
  (interactive)
  (setq mdw-point-overlay (mdw-configure-point-overlay)))

(defun mdw-remove-point-overlay ()
  "Remove the current-point overlay."
  (delete-overlay mdw-point-overlay))

(defun mdw-update-point-overlay ()
  "Mark the current point position with an overlay."
  (if (not mdw-point-overlay-mode)
      (mdw-remove-point-overlay)
    (overlay-put mdw-point-overlay 'window (selected-window))
    (move-overlay mdw-point-overlay
                  (line-beginning-position)
                  (+ (line-end-position) 1))))

(defvar mdw-point-overlay-buffers nil
  "List of buffers using `mdw-point-overlay-mode'.")

(define-minor-mode mdw-point-overlay-mode
  "Indicate current line with an overlay."
  :global nil
  (let ((buffer (current-buffer)))
    (setq mdw-point-overlay-buffers
            (mapcan (lambda (buf)
                      (if (and (buffer-live-p buf)
                               (not (eq buf buffer)))
                          (list buf)))
                    mdw-point-overlay-buffers))
    (if mdw-point-overlay-mode
        (setq mdw-point-overlay-buffers
                (cons buffer mdw-point-overlay-buffers))))
  (cond (mdw-point-overlay-buffers
         (add-hook 'pre-command-hook 'mdw-remove-point-overlay)
         (add-hook 'post-command-hook 'mdw-update-point-overlay))
        (t
         (mdw-remove-point-overlay)
         (remove-hook 'pre-command-hook 'mdw-remove-point-overlay)
         (remove-hook 'post-command-hook 'mdw-update-point-overlay))))

(define-globalized-minor-mode mdw-global-point-overlay-mode
  mdw-point-overlay-mode
  (lambda () (if (not (minibufferp)) (mdw-point-overlay-mode t))))

(defvar mdw-terminal-title-alist nil)
(defun mdw-update-terminal-title ()
  (when (let ((term (frame-parameter nil 'tty-type)))
          (and term (string-match "^xterm" term)))
    (let* ((tty (frame-parameter nil 'tty))
           (old (assoc tty mdw-terminal-title-alist))
           (new (format-mode-line frame-title-format)))
      (unless (and old (equal (cdr old) new))
        (if old (rplacd old new)
          (setq mdw-terminal-title-alist
                  (cons (cons tty new) mdw-terminal-title-alist)))
        (send-string-to-terminal (concat "\e]2;" new "\e\\"))))))

(add-hook 'post-command-hook 'mdw-update-terminal-title)

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

;; 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-indent-arglist-nested (langelem)
  "Indent continued argument lists.
If we've nested more than one argument list, then only introduce a single
indentation anyway."
  (let ((context c-syntactic-context)
        (pos (c-langelem-2nd-pos c-syntactic-element))
        (should-indent-p t))
    (while (and context
                (eq (caar context) 'arglist-cont-nonempty))
      (when (and (= (caddr (pop context)) pos)
                 context
                 (memq (caar context) '(arglist-intro
                                        arglist-cont-nonempty)))
        (setq should-indent-p nil)))
    (if should-indent-p '+ 0)))

(defvar mdw-define-c-styles-hook nil
  "Hook run when `cc-mode' starts up to define styles.")

(defun mdw-merge-style-alists (first second)
  (let ((output nil))
    (dolist (item first)
      (let ((key (car item)) (value (cdr item)))
        (if (string-suffix-p "-alist" (symbol-name key))
            (push (cons key
                        (mdw-merge-style-alists value
                                                (cdr (assoc key second))))
                  output)
          (push item output))))
    (dolist (item second)
      (unless (assoc (car item) first)
        (push item output)))
    (nreverse output)))

(cl-defmacro mdw-define-c-style (name (&optional parent) &rest assocs)
  "Define a C style, called NAME (a symbol) based on PARENT, setting ASSOCs.
A function, named `mdw-define-c-style/NAME', is defined to actually install
the style using `c-add-style', and added to the hook
`mdw-define-c-styles-hook'.  If CC Mode is already loaded, then the style is
set."
  (declare (indent defun))
  (let* ((name-string (symbol-name name))
         (var (intern (concat "mdw-c-style/" name-string)))
         (func (intern (concat "mdw-define-c-style/" name-string))))
    `(progn
       (setq ,var
               ,(if (null parent)
                    `',assocs
                  (let ((parent-list (intern (concat "mdw-c-style/"
                                                     (symbol-name parent)))))
                    `(mdw-merge-style-alists ',assocs ,parent-list))))
       (defun ,func () (c-add-style ,name-string ,var))
       (and (featurep 'cc-mode) (,func))
       (add-hook 'mdw-define-c-styles-hook ',func)
       ',name)))

(eval-after-load "cc-mode"
  '(run-hooks 'mdw-define-c-styles-hook))

(mdw-define-c-style mdw-c ()
  (c-basic-offset . 2)
  (comment-column . 40)
  (c-class-key . "class")
  (c-backslash-column . 72)
  (c-label-minimum-indentation . 0)
  (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 . +)))

(mdw-define-c-style mdw-trustonic-basic-c (mdw-c)
  (c-basic-offset . 4)
  (comment-column . 0)
  (c-indent-comment-alist (anchored-comment . (column . 0))
                          (end-block . (space . 1))
                          (cpp-end-block . (space . 1))
                          (other . (space . 1)))
  (c-offsets-alist (access-label . -2)))

(mdw-define-c-style mdw-trustonic-c (mdw-trustonic-basic-c)
  (c-offsets-alist (arglist-cont-nonempty . mdw-c-indent-arglist-nested)))

(defun mdw-set-default-c-style (modes style)
  "Update the default CC Mode style for MODES to be STYLE.

MODES may be a list of major mode names or a singleton.  STYLE is a style
name, as a symbol."
  (let ((modes (if (listp modes) modes (list modes)))
        (style (symbol-name style)))
    (setq c-default-style
            (append (mapcar (lambda (mode)
                              (cons mode style))
                            modes)
                    (remove-if (lambda (assoc)
                                 (memq (car assoc) modes))
                               (if (listp c-default-style)
                                   c-default-style
                                 (list (cons 'other c-default-style))))))))
(setq c-default-style "mdw-c")

(mdw-set-default-c-style '(c-mode c++-mode) 'mdw-c)

(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.
  (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 "alignas"          ;C11 macro, C++11
                      "alignof"          ;C++11
                      "and"              ;C++, C95 macro
                      "and_eq"           ;C++, C95 macro
                      "asm"              ;K&R, C++, GCC
                      "atomic"           ;C11 macro, C++11 template type
                      "auto"             ;K&R, C89
                      "bitand"           ;C++, C95 macro
                      "bitor"            ;C++, C95 macro
                      "bool"             ;C++, C99 macro
                      "break"            ;K&R, C89
                      "case"             ;K&R, C89
                      "catch"            ;C++
                      "char"             ;K&R, C89
                      "char16_t"         ;C++11, C11 library type
                      "char32_t"         ;C++11, C11 library type
                      "class"            ;C++
                      "complex"          ;C99 macro, C++ template type
                      "compl"            ;C++, C95 macro
                      "const"            ;C89
                      "constexpr"        ;C++11
                      "const_cast"       ;C++
                      "continue"         ;K&R, C89
                      "decltype"         ;C++11
                      "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
                      "float"            ;K&R, C89
                      "for"              ;K&R, C89
                      ;; "fortran"       ;K&R
                      "friend"           ;C++
                      "goto"             ;K&R, C89
                      "if"               ;K&R, C89
                      "imaginary"        ;C99 macro
                      "inline"           ;C++, C99, GCC
                      "int"              ;K&R, C89
                      "long"             ;K&R, C89
                      "mutable"          ;C++
                      "namespace"        ;C++
                      "new"              ;C++
                      "noexcept"         ;C++11
                      "noreturn"         ;C11 macro
                      "not"              ;C++, C95 macro
                      "not_eq"           ;C++, C95 macro
                      "nullptr"          ;C++11
                      "operator"         ;C++
                      "or"               ;C++, C95 macro
                      "or_eq"            ;C++, C95 macro
                      "private"          ;C++
                      "protected"        ;C++
                      "public"           ;C++
                      "register"         ;K&R, C89
                      "reinterpret_cast" ;C++
                      "restrict"         ;C99
                      "return"           ;K&R, C89
                      "short"            ;K&R, C89
                      "signed"           ;C89
                      "sizeof"           ;K&R, C89
                      "static"           ;K&R, C89
                      "static_assert"    ;C11 macro, C++11
                      "static_cast"      ;C++
                      "struct"           ;K&R, C89
                      "switch"           ;K&R, C89
                      "template"         ;C++
                      "throw"            ;C++
                      "try"              ;C++
                      "thread_local"     ;C11 macro, C++11
                      "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++, C95 macro
                      "xor_eq"           ;C++, C95 macro
                      "_Alignas"         ;C11
                      "_Alignof"         ;C11
                      "_Atomic"          ;C11
                      "_Bool"            ;C99
                      "_Complex"         ;C99
                      "_Generic"         ;C11
                      "_Imaginary"       ;C99
                      "_Noreturn"        ;C11
                      "_Pragma"          ;C99 preprocessor
                      "_Static_assert"   ;C11
                      "_Thread_local"    ;C11
                      "__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
                      ))
        (c-builtins
         (mdw-regexps "false"            ;C++, C99 macro
                      "this"             ;C++
                      "true"             ;C++, C99 macro
                      ))
        (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))

             (list (concat "\\<\\(" c-builtins "\\)\\>")
                   '(0 font-lock-variable-name-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))))))

(define-derived-mode sod-mode c-mode "Sod"
  "Major mode for editing Sod code.")
(push '("\\.sod$" . sod-mode) auto-mode-alist)

(dolist (hook '(c-mode-hook objc-mode-hook c++-mode-hook))
  (add-hook hook 'mdw-misc-mode-config t)
  (add-hook hook 'mdw-fontify-c-and-c++ t))

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

(define-derived-mode apcalc-mode c-mode "AP Calc"
  "Major mode for editing Calc code.")

(defun mdw-fontify-apcalc ()

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

  ;; Other stuff.
  (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))))))

(progn
  (add-hook 'apcalc-mode-hook 'mdw-misc-mode-config t)
  (add-hook 'apcalc-mode-hook 'mdw-fontify-apcalc t))

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

;; Make indentation nice.

(mdw-define-c-style mdw-java ()
  (c-basic-offset . 2)
  (c-backslash-column . 72)
  (c-offsets-alist (substatement-open . 0)
                   (label . +)
                   (case-label . +)
                   (access-label . 0)
                   (inclass . +)
                   (statement-case-intro . +)))
(mdw-set-default-c-style 'java-mode 'mdw-java)

;; Declare Java fontification style.

(defun mdw-fontify-java ()

  ;; Fiddle with some syntax codes.
  (modify-syntax-entry ?@ ".")
  (modify-syntax-entry ?@ "." font-lock-syntax-table)

  ;; Other stuff.
  (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" "assert"
                      "boolean" "break" "byte"
                      "case" "catch" "char" "class" "const" "continue"
                      "default" "do" "double"
                      "else" "enum" "extends"
                      "final" "finally" "float" "for"
                      "goto"
                      "if" "implements" "import" "instanceof" "int"
                      "interface"
                      "long"
                      "native" "new"
                      "package" "private" "protected" "public"
                      "return"
                      "short" "static" "strictfp" "switch" "synchronized"
                      "throw" "throws" "transient" "try"
                      "void" "volatile"
                      "while"))

        (java-builtins
         (mdw-regexps "false" "null" "super" "this" "true")))

    (setq font-lock-keywords
            (list

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

             ;; Handle the magic builtins defined above.
             (list (concat "\\<\\(" java-builtins "\\)\\>")
                   '(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))))))

(progn
  (add-hook 'java-mode-hook 'mdw-misc-mode-config t)
  (add-hook 'java-mode-hook 'mdw-fontify-java t))

;;;--------------------------------------------------------------------------
;;; 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"))
        (javascript-builtins
         (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 builtins defined above.
             (list (concat "\\_<\\(" javascript-builtins "\\)\\_>")
                   '(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))))))

(progn
  (add-hook 'js-mode-hook 'mdw-misc-mode-config t)
  (add-hook 'js-mode-hook 'mdw-fontify-javascript t))

;;;--------------------------------------------------------------------------
;;; Scala programming configuration.

(defun mdw-fontify-scala ()

  ;; Comment filling.
  (setq mdw-fill-prefix mdw-c-comment-fill-prefix)

  ;; Define things to be fontified.
  (make-local-variable 'font-lock-keywords)
  (let ((scala-keywords
         (mdw-regexps "abstract" "case" "catch" "class" "def" "do" "else"
                      "extends" "final" "finally" "for" "forSome" "if"
                      "implicit" "import" "lazy" "match" "new" "object"
                      "override" "package" "private" "protected" "return"
                      "sealed" "throw" "trait" "try" "type" "val"
                      "var" "while" "with" "yield"))
        (scala-constants
         (mdw-regexps "false" "null" "super" "this" "true"))
        (punctuation "[-!%^&*=+:@#~/?\\|`]"))

    (setq font-lock-keywords
            (list

             ;; Magical identifiers between backticks.
             (list (concat "`\\([^`]+\\)`")
                   '(1 font-lock-variable-name-face))

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

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

             ;; Magical identifiers between backticks.
             (list (concat "`\\([^`]+\\)`")
                   '(1 font-lock-variable-name-face))

             ;; Handle numbers too.
             ;;
             ;; As usual, not quite right.
             (list (concat "\\_<\\("
                           "0\\([xX][0-9a-fA-F]+\\|[0-7]+\\)\\|"
                           "[0-9]+\\(\\.[0-9]*\\)?"
                           "\\([eE][-+]?[0-9]+\\)?\\)"
                           "[lLfFdD]?")
                   '(0 mdw-number-face))

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

          font-lock-syntactic-keywords
            (list

             ;; Single quotes around characters.  But not when used to quote
             ;; symbol names.  Ugh.
             (list (concat "\\('\\)"
                           "\\(" "."
                           "\\|" "\\\\" "\\(" "\\\\\\\\" "\\)*"
                           "u+" "[0-9a-fA-F]\\{4\\}"
                           "\\|" "\\\\" "[0-7]\\{1,3\\}"
                           "\\|" "\\\\" "." "\\)"
                           "\\('\\)")
                   '(1 "\"")
                   '(4 "\""))))))

(progn
  (add-hook 'scala-mode-hook 'mdw-misc-mode-config t)
  (add-hook 'scala-mode-hook 'mdw-fontify-scala t))

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

;; Make indentation nice.

(mdw-define-c-style mdw-csharp ()
  (c-basic-offset . 2)
  (c-backslash-column . 72)
  (c-offsets-alist (substatement-open . 0)
                   (label . 0)
                   (case-label . +)
                   (access-label . 0)
                   (inclass . +)
                   (statement-case-intro . +)))
(mdw-set-default-c-style 'csharp-mode 'mdw-csharp)

;; Declare C# fontification style.

(defun mdw-fontify-csharp ()

  ;; Other stuff.
  (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" "bool" "break" "byte" "case" "catch"
                      "char" "checked" "class" "const" "continue" "decimal"
                      "default" "delegate" "do" "double" "else" "enum"
                      "event" "explicit" "extern" "finally" "fixed" "float"
                      "for" "foreach" "goto" "if" "implicit" "in" "int"
                      "interface" "internal" "is" "lock" "long" "namespace"
                      "new" "object" "operator" "out" "override" "params"
                      "private" "protected" "public" "readonly" "ref"
                      "return" "sbyte" "sealed" "short" "sizeof"
                      "stackalloc" "static" "string" "struct" "switch"
                      "throw" "try" "typeof" "uint" "ulong" "unchecked"
                      "unsafe" "ushort" "using" "virtual" "void" "volatile"
                      "while" "yield"))

        (csharp-builtins
         (mdw-regexps "base" "false" "null" "this" "true")))

    (setq font-lock-keywords
            (list

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

             ;; Handle the magic builtins defined above.
             (list (concat "\\<\\(" csharp-builtins "\\)\\>")
                   '(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))))))

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

(add-hook 'csharp-mode-hook 'mdw-fontify-csharp t)

;;;--------------------------------------------------------------------------
;;; 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"
                      "begin" "break"
                      "checked" "class" "component" "const" "constraint"
                      "constructor" "continue"
                      "default" "delegate" "do" "done" "downcast" "downto"
                      "eager" "elif" "else" "end" "exception" "extern"
                      "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"
                      "object" "of" "open" "or" "override"
                      "parallel" "params" "private" "process" "protected"
                      "public" "pure"
                      "rec" "recursive" "return"
                      "sealed" "sig" "static" "struct"
                      "tailcall" "then" "to" "trait" "try" "type"
                      "upcast" "use"
                      "val" "virtual" "void" "volatile"
                      "when" "while" "with"
                      "yield"))

        (fsharp-builtins
         (mdw-regexps "asr" "land" "lor" "lsl" "lsr" "lxor" "mod"
                      "base" "false" "null" "true"))

        (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))))))

(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)))

(progn
  (add-hook 'fsharp-mode-hook 'mdw-misc-mode-config t)
  (add-hook 'fsharp-mode-hook 'mdw-fontify-fsharp t)
  (add-hook 'inferior-fsharp-mode-hooks 'mdw-fontify-inferior-fsharp t))

;;;--------------------------------------------------------------------------
;;; 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))

             ;; Strings and characters.
             (list (concat "'"
                           "\\(" "[^\\']" "\\|"
                                 "\\\\"
                                 "\\(" "[abfnrtv\\'\"]" "\\|"
                                       "[0-7]\\{3\\}" "\\|"
                                       "x" "[0-9A-Fa-f]\\{2\\}" "\\|"
                                       "u" "[0-9A-Fa-f]\\{4\\}" "\\|"
                                       "U" "[0-9A-Fa-f]\\{8\\}" "\\)" "\\)"
                           "'"
                           "\\|"
                           "\""
                           "\\(" "[^\n\\\"]+" "\\|" "\\\\." "\\)*"
                           "\\(\"\\|$\\)"
                           "\\|"
                           "`" "[^`]+" "`")
                   '(0 font-lock-string-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))))))
(progn
  (add-hook 'go-mode-hook 'mdw-misc-mode-config t)
  (add-hook 'go-mode-hook 'mdw-fontify-go t))

;;;--------------------------------------------------------------------------
;;; Rust programming configuration.

(setq-default rust-indent-offset 2)

(defun mdw-self-insert-and-indent (count)
  (interactive "p")
  (self-insert-command count)
  (indent-according-to-mode))

(defun mdw-fontify-rust ()

  ;; Hack syntax categories.
  (modify-syntax-entry ?$ ".")
  (modify-syntax-entry ?% ".")
  (modify-syntax-entry ?= ".")

  ;; Fontify keywords and things.
  (make-local-variable 'font-lock-keywords)
  (let ((rust-keywords
         (mdw-regexps "abstract" "alignof" "as" "async" "await"
                      "become" "box" "break"
                      "const" "continue" "crate"
                      "do" "dyn"
                      "else" "enum" "extern"
                      "final" "fn" "for"
                      "if" "impl" "in"
                      "let" "loop"
                      "macro" "match" "mod" "move" "mut"
                      "offsetof" "override"
                      "priv" "proc" "pub" "pure"
                      "ref" "return"
                      "sizeof" "static" "struct" "super"
                      "trait" "try" "type" "typeof"
                      "union" "unsafe" "unsized" "use"
                      "virtual"
                      "where" "while"
                      "yield"))
        (rust-builtins
         (mdw-regexps "array" "pointer" "slice" "tuple"
                      "bool" "true" "false"
                      "f32" "f64"
                      "i8" "i16" "i32" "i64" "isize"
                      "u8" "u16" "u32" "u64" "usize"
                      "char" "str"
                      "self" "Self")))
    (setq font-lock-keywords
            (list

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

             ;; Handle numbers too.
             (list (concat "\\_<\\("
                                 "[0-9][0-9_]*"
                                 "\\(" "\\(\\.[0-9_]+\\)?[eE][-+]?[0-9_]+"
                                 "\\|" "\\.[0-9_]+"
                                 "\\)"
                                 "\\(f32\\|f64\\)?"
                           "\\|" "\\(" "[0-9][0-9_]*"
                                 "\\|" "0x[0-9a-fA-F_]+"
                                 "\\|" "0o[0-7_]+"
                                 "\\|" "0b[01_]+"
                                 "\\)"
                                 "\\([ui]\\(8\\|16\\|32\\|64\\|size\\)\\)?"
                           "\\)\\_>")
                   '(0 mdw-number-face))

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

  ;; Hack key bindings.
  (local-set-key [?{] 'mdw-self-insert-and-indent)
  (local-set-key [?}] 'mdw-self-insert-and-indent))

(progn
  (add-hook 'rust-mode-hook 'mdw-misc-mode-config t)
  (add-hook 'rust-mode-hook 'mdw-fontify-rust t))

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

;; Make Awk indentation nice.

(mdw-define-c-style mdw-awk ()
  (c-basic-offset . 2)
  (c-offsets-alist (substatement-open . 0)
                   (c-backslash-column . 72)
                   (statement-cont . 0)
                   (statement-case-intro . +)))
(mdw-set-default-c-style 'awk-mode 'mdw-awk)

;; Declare Awk fontification style.

(defun mdw-fontify-awk ()

  ;; Miscellaneous fiddling.
  (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))))))

(progn
  (add-hook 'awk-mode-hook 'mdw-misc-mode-config t)
  (add-hook 'awk-mode-hook 'mdw-fontify-awk t))

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

;; Perl indentation style.

(setq-default perl-indent-level 2)

(setq-default cperl-indent-level 2
              cperl-continued-statement-offset 2
              cperl-continued-brace-offset 0
              cperl-brace-offset -2
              cperl-brace-imaginary-offset 0
              cperl-label-offset 0)

;; Define perl fontification style.

(defun mdw-fontify-perl ()

  ;; Miscellaneous fiddling.
  (modify-syntax-entry ?$ "\\")
  (modify-syntax-entry ?$ "\\" font-lock-syntax-table)
  (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"
                      "default" "do"
                      "else" "elsif" "eq"
                      "for" "foreach"
                      "ge" "given" "gt" "goto"
                      "if"
                      "last" "le" "local" "lt"
                      "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))))))

(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))))))

(dolist (hook '(perl-mode-hook cperl-mode-hook))
  (add-hook hook 'mdw-misc-mode-config t)
  (add-hook hook 'mdw-fontify-perl t))

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

(setq-default py-indent-offset 2
              python-indent 2
              python-indent-offset 2
              python-fill-docstring-style 'symmetric)

(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]+\\|[oO]?[0-7]+\\|[bB][01]+\\)\\|"
                         "\\_<[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)))))

;; 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" "enum" "except" "exec"
                "extern" "finally" "for" "from" "global" "if"
                "import" "in" "is" "lambda" "not" "or" "pass" "print"
                "property" "raise" "return" "struct" "try" "while" "with"
                "yield")))

(define-derived-mode pyrex-mode python-mode "Pyrex"
  "Major mode for editing Pyrex source code")
(setq auto-mode-alist
        (append '(("\\.pyx$" . pyrex-mode)
                  ("\\.pxd$" . pyrex-mode)
                  ("\\.pxi$" . pyrex-mode))
                auto-mode-alist))

(progn
  (add-hook 'python-mode-hook 'mdw-misc-mode-config t)
  (add-hook 'python-mode-hook 'mdw-fontify-python t)
  (add-hook 'pyrex-mode-hook 'mdw-fontify-pyrex t))

;;;--------------------------------------------------------------------------
;;; Lua programming style.

(setq-default lua-indent-level 2)

(defun mdw-fontify-lua ()

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

  ;; Now define fontification things.
  (make-local-variable 'font-lock-keywords)
  (let ((lua-keywords
         (mdw-regexps "and" "break" "do" "else" "elseif" "end"
                      "false" "for" "function" "goto" "if" "in" "local"
                      "nil" "not" "or" "repeat" "return" "then" "true"
                      "until" "while")))
    (setq font-lock-keywords
            (list

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

             ;; At least numbers are simpler than C.
             (list (concat "\\_<\\(" "0[xX]"
                                     "\\(" "[0-9a-fA-F]+"
                                           "\\(\\.[0-9a-fA-F]*\\)?"
                                     "\\|" "\\.[0-9a-fA-F]+"
                                     "\\)"
                                     "\\([pP][-+]?[0-9]+\\)?"
                               "\\|" "\\(" "[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))))))

(progn
  (add-hook 'lua-mode-hook 'mdw-misc-mode-config t)
  (add-hook 'lua-mode-hook 'mdw-fontify-lua t))

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

;; Icon indentation style.

(setq-default 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))))))

(progn
  (add-hook 'icon-mode-hook 'mdw-misc-mode-config t)
  (add-hook 'icon-mode-hook 'mdw-fontify-icon t))

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

(defun mdw-fontify-asm ()
  (modify-syntax-entry ?' "\"")
  (modify-syntax-entry ?. "w")
  (modify-syntax-entry ?\n ">")
  (setf fill-prefix nil)
  (modify-syntax-entry ?. "_")
  (modify-syntax-entry ?* ". 23")
  (modify-syntax-entry ?/ ". 124b")
  (modify-syntax-entry ?\n "> b")
  (local-set-key ";" 'self-insert-command)
  (mdw-standard-fill-prefix "\\([ \t]*;+[ \t]*\\)"))

(defun mdw-asm-set-comment ()
  (modify-syntax-entry ?; "."
                       )
  (modify-syntax-entry asm-comment-char "< b")
  (setq comment-start (string asm-comment-char ? )))
(add-hook 'asm-mode-local-variables-hook 'mdw-asm-set-comment)
(put 'asm-comment-char 'safe-local-variable 'characterp)

(progn
  (add-hook 'asm-mode-hook 'mdw-misc-mode-config t)
  (add-hook 'asm-mode-hook 'mdw-fontify-asm t))

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

(setq-default tcl-indent-level 2)

(defun mdw-fontify-tcl ()
  (dolist (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)))))

(progn
  (add-hook 'tcl-mode-hook 'mdw-misc-mode-config t)
  (add-hook 'tcl-mode-hook 'mdw-fontify-tcl t))

;;;--------------------------------------------------------------------------
;;; 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))))))

(progn
  (add-hook 'dylan-mode-hook 'mdw-misc-mode-config t)
  (add-hook 'dylan-mode-hook 'mdw-fontify-dylan t))

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

(setq-default 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))))))

(dolist (hook '(a68-mode-hook a68-mode-hooks))
  (add-hook hook 'mdw-misc-mode-config t)
  (add-hook hook 'mdw-fontify-algol-68 t))

;;;--------------------------------------------------------------------------
;;; 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-*)
  (dolist (ch '(?! ?? ?# ?@ ?$)) (modify-syntax-entry ch "w"))
  (dolist (ch '(?¬)) (modify-syntax-entry ch "."))
  (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))))))

(progn
  (add-hook 'rexx-mode-hook 'mdw-misc-mode-config t)
  (add-hook 'rexx-mode-hook 'mdw-fontify-rexx t))

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

(setq-default sml-nested-if-indent t
              sml-case-indent nil
              sml-indent-level 4
              sml-type-of-indent nil)

(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))))))

(progn
  (add-hook 'sml-mode-hook 'mdw-misc-mode-config t)
  (add-hook 'sml-mode-hook 'mdw-fontify-sml t))

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

(setq-default haskell-indent-offset 2)

(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))))))

(progn
  (add-hook 'haskell-mode-hook 'mdw-misc-mode-config t)
  (add-hook 'haskell-mode-hook 'mdw-fontify-haskell t))

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

(setq-default 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))))))

(progn
  (add-hook 'erlang-mode-hook 'mdw-misc-mode-config t)
  (add-hook 'erlang-mode-hook 'mdw-fontify-erlang t))

;;;--------------------------------------------------------------------------
;;; 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)))))

(dolist (hook '(texinfo-mode-hook TeXinfo-mode-hook))
  (add-hook hook 'mdw-misc-mode-config t)
  (add-hook hook 'mdw-fontify-texinfo t))

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

(setq-default LaTeX-table-label "tbl:"
              TeX-auto-untabify nil
              LaTeX-syntactic-comments nil
              LaTeX-fill-break-at-separators '(\\\[))

(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)

  ;; Make `tab' be useful, given that tab stops in TeX don't work well.
  (local-set-key "\C-\M-i" 'indent-relative)
  (setq indent-tabs-mode nil)

  ;; 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)))))

(setq TeX-install-font-lock 'tex-font-setup)

(eval-after-load 'font-latex
  '(defun font-latex-jit-lock-force-redisplay (buf start end)
     "Compatibility for Emacsen not offering `jit-lock-force-redisplay'."
     ;; The following block is an expansion of `jit-lock-force-redisplay'
     ;; and involved macros taken from CVS Emacs on 2007-04-28.
     (with-current-buffer buf
       (let ((modified (buffer-modified-p)))
         (unwind-protect
             (let ((buffer-undo-list t)
                   (inhibit-read-only t)
                   (inhibit-point-motion-hooks t)
                   (inhibit-modification-hooks t)
                   deactivate-mark
                   buffer-file-name
                   buffer-file-truename)
               (put-text-property start end 'fontified t))
           (unless modified
             (restore-buffer-modified-p nil)))))))

(setq TeX-output-view-style
        '(("^dvi$"
           ("^landscape$" "^pstricks$\\|^pst-\\|^psfrag$")
           "%(o?)dvips -t landscape %d -o && xdg-open %f")
          ("^dvi$" "^pstricks$\\|^pst-\\|^psfrag$"
           "%(o?)dvips %d -o && xdg-open %f")
          ("^dvi$"
           ("^a4\\(?:dutch\\|paper\\|wide\\)\\|sem-a4$" "^landscape$")
           "%(o?)xdvi %dS -paper a4r -s 0 %d")
          ("^dvi$" "^a4\\(?:dutch\\|paper\\|wide\\)\\|sem-a4$"
           "%(o?)xdvi %dS -paper a4 %d")
          ("^dvi$"
           ("^a5\\(?:comb\\|paper\\)$" "^landscape$")
           "%(o?)xdvi %dS -paper a5r -s 0 %d")
          ("^dvi$" "^a5\\(?:comb\\|paper\\)$" "%(o?)xdvi %dS -paper a5 %d")
          ("^dvi$" "^b5paper$" "%(o?)xdvi %dS -paper b5 %d")
          ("^dvi$" "^letterpaper$" "%(o?)xdvi %dS -paper us %d")
          ("^dvi$" "^legalpaper$" "%(o?)xdvi %dS -paper legal %d")
          ("^dvi$" "^executivepaper$" "%(o?)xdvi %dS -paper 7.25x10.5in %d")
          ("^dvi$" "." "%(o?)xdvi %dS %d")
          ("^pdf$" "." "xdg-open %o")
          ("^html?$" "." "sensible-browser %o")))

(setq TeX-view-program-list
        '(("mupdf" ("mupdf %o" (mode-io-correlate " %(outpage)")))))

(setq TeX-view-program-selection
        '(((output-dvi style-pstricks) "dvips and gv")
          (output-dvi "xdvi")
          (output-pdf "mupdf")
          (output-html "sensible-browser")))

(setq TeX-open-quote "\""
      TeX-close-quote "\"")

(setq reftex-use-external-file-finders t
      reftex-auto-recenter-toc t)

(setq reftex-label-alist
        '(("theorem" ?T "th:" "~\\ref{%s}" t ("theorems?" "th\\.") -2)
          ("axiom" ?A "ax:" "~\\ref{%s}" t ("axioms?" "ax\\.") -2)
          ("definition" ?D "def:" "~\\ref{%s}" t ("definitions?" "def\\.") -2)
          ("proposition" ?P "prop:" "~\\ref{%s}" t
           ("propositions?" "prop\\.") -2)
          ("lemma" ?L "lem:" "~\\ref{%s}" t ("lemmas?" "lem\\.") -2)
          ("example" ?X "eg:" "~\\ref{%s}" t ("examples?") -2)
          ("exercise" ?E "ex:" "~\\ref{%s}" t ("exercises?" "ex\\.") -2)
          ("enumerate" ?i "i:" "~\\ref{%s}" item ("items?"))))
(setq reftex-section-prefixes
        '((0 . "part:")
          (1 . "ch:")
          (t . "sec:")))

(setq bibtex-field-delimiters 'double-quotes
      bibtex-align-at-equal-sign t
      bibtex-entry-format '(realign opts-or-alts required-fields
                            numerical-fields last-comma delimiters
                            unify-case sort-fields braces)
      bibtex-sort-ignore-string-entries nil
      bibtex-maintain-sorted-entries 'entry-class
      bibtex-include-OPTkey t
      bibtex-autokey-names-stretch 1
      bibtex-autokey-expand-strings t
      bibtex-autokey-name-separator "-"
      bibtex-autokey-year-length 4
      bibtex-autokey-titleword-separator "-"
      bibtex-autokey-name-year-separator "-"
      bibtex-autokey-year-title-separator ":")

(progn
  (dolist (hook '(tex-mode-hook latex-mode-hook
                                TeX-mode-hook LaTeX-mode-hook))
    (add-hook hook 'mdw-misc-mode-config t)
    (add-hook hook 'mdw-fontify-tex t))
  (add-hook 'bibtex-mode-hook (lambda () (setq fill-column 76))))

;;;--------------------------------------------------------------------------
;;; HTML, CSS, and other web foolishness.

(setq-default css-indent-offset 2)

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

(setq-default psgml-html-build-new-buffer nil)

(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))))
             (dolist (ch (if (listp flag) flag (list flag)))
               (modify-syntax-entry ch "." table))
             (set-syntax-table table)
             (and font-lock-mode (font-lock-fontify-buffer)))))))

(progn
  (add-hook 'conf-mode-hook 'mdw-misc-mode-config t)
  (add-hook 'conf-mode-local-variables-hook 'mdw-fix-up-quote t 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)))

  ;; Don't insert here-document scaffolding automatically.
  (local-set-key "<" 'self-insert-command)

  ;; 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))))))

(progn
  (add-hook 'sh-mode-hook 'mdw-misc-mode-config t)
  (add-hook 'sh-mode-hook 'mdw-setup-sh-script-mode t))

;;;--------------------------------------------------------------------------
;;; 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-default eshell-prompt-function 'mdw-eshell-prompt)
(setq-default 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"))

(defun mdw-eshell-hack () (setenv "LD_PRELOAD" nil))
(add-hook 'eshell-mode-hook 'mdw-eshell-hack)

;;;--------------------------------------------------------------------------
;;; 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))

(progn
  (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))

(progn
  (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))

;;;--------------------------------------------------------------------------
;;; 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))

(defmacro mdw-advise-hyperspec-lookup (func args)
  `(defadvice ,func (around mdw-browse-w3m ,args activate compile)
     (if (fboundp 'w3m)
         (let ((browse-url-browser-function #'mdw-w3m-browse-url))
           ad-do-it)
       ad-do-it)))
(mdw-advise-hyperspec-lookup common-lisp-hyperspec (symbol))
(mdw-advise-hyperspec-lookup common-lisp-hyperspec-format (char))
(mdw-advise-hyperspec-lookup common-lisp-hyperspec-lookup-reader-macro (char))

(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)))))

;; Special indentation.

(defvar mdw-lisp-loop-default-indent 2)
(defvar mdw-lisp-setf-value-indent 2)

(setq lisp-simple-loop-indentation 0
      lisp-loop-keyword-indentation 0
      lisp-loop-forms-indentation 2
      lisp-lambda-list-keyword-parameter-alignment t)

(defun mdw-indent-funcall
    (path state &optional indent-point sexp-column normal-indent)
  "Indent `funcall' more usefully.
Essentially, treat `funcall foo' as a function name, and align the arguments
to `foo'."
  (and (or (not (consp path)) (null (cadr path)))
       (save-excursion
         (goto-char (cadr state))
         (forward-char 1)
         (let ((start-line (line-number-at-pos)))
           (and (condition-case nil (progn (forward-sexp 3) t)
                  (scan-error nil))
                (progn
                  (forward-sexp -1)
                  (and (= start-line (line-number-at-pos))
                       (current-column))))))))
(progn
  (put 'funcall 'common-lisp-indent-function 'mdw-indent-funcall)
  (put 'funcall 'lisp-indent-function 'mdw-indent-funcall))

(defun mdw-indent-setf
    (path state &optional indent-point sexp-column normal-indent)
  "Indent `setf' more usefully.
If the values aren't on the same lines as their variables then indent them
by `mdw-lisp-setf-value-indent' spaces."
  (and (or (not (consp path)) (null (cadr path)))
       (let ((basic-indent (save-excursion
                             (goto-char (cadr state))
                             (forward-char 1)
                             (and (condition-case nil
                                      (progn (forward-sexp 2) t)
                                    (scan-error nil))
                                  (progn
                                    (forward-sexp -1)
                                    (current-column)))))
             (offset (if (consp path) (car path)
                       (catch 'done
                         (save-excursion
                           (let ((start path)
                                 (count 0))
                             (goto-char (cadr state))
                             (forward-char 1)
                             (while (< (point) start)
                               (condition-case nil (forward-sexp 1)
                                 (scan-error (throw 'done nil)))
                               (incf count))
                             (1- count)))))))
         (and basic-indent offset
              (list (+ basic-indent
                       (if (oddp offset) 0
                         mdw-lisp-setf-value-indent))
                    basic-indent)))))
(progn
  (put 'setf 'common-lisp-indent-functopion 'mdw-indent-setf)
  (put 'psetf 'common-lisp-indent-function 'mdw-indent-setf)
  (put 'setq 'common-lisp-indent-function 'mdw-indent-setf)
  (put 'setf 'lisp-indent-function 'mdw-indent-setf)
  (put 'setq 'lisp-indent-function 'mdw-indent-setf)
  (put 'setq-local 'lisp-indent-function 'mdw-indent-setf)
  (put 'setq-default 'lisp-indent-function 'mdw-indent-setf))

(defadvice common-lisp-loop-part-indentation
    (around mdw-fix-loop-indentation (indent-point state) activate compile)
  "Improve `loop' indentation.
If the first subform is on the same line as the `loop' keyword, then
align the other subforms beneath it.  Otherwise, indent them
`mdw-lisp-loop-default-indent' columns in from the opening parenthesis."

  (let* ((loop-indentation (save-excursion
                             (goto-char (elt state 1))
                             (current-column))))

    ;; Don't really care about this.
    (when (and (eq lisp-indent-backquote-substitution-mode 'corrected))
      (save-excursion
        (goto-char (elt state 1))
        (cl-incf loop-indentation
                 (cond ((eq (char-before) ?,) -1)
                       ((and (eq (char-before) ?@)
                             (progn (backward-char)
                                    (eq (char-before) ?,)))
                        -2)
                       (t 0)))))

    ;; If the first loop item is on the same line as the `loop' itself then
    ;; use that as the baseline.  Otherwise advance by the default indent.
    (goto-char (cadr state))
    (forward-char 1)
    (let ((baseline-indent
           (if (= (line-number-at-pos)
                  (if (condition-case nil (progn (forward-sexp 2) t)
                        (scan-error nil))
                      (progn (forward-sexp -1) (line-number-at-pos))
                    -1))
               (current-column)
             (+ loop-indentation mdw-lisp-loop-default-indent))))

      (goto-char indent-point)
      (beginning-of-line)

      (setq ad-return-value
              (list
               (cond ((not (lisp-extended-loop-p (elt state 1)))
                      (+ baseline-indent lisp-simple-loop-indentation))
                     ((looking-at "^\\s-*\\(:?\\sw+\\|;\\)")
                      (+ baseline-indent lisp-loop-keyword-indentation))
                     (t
                      (+ baseline-indent lisp-loop-forms-indentation)))

               ;; Tell the caller that the next line needs recomputation,
               ;; even though it doesn't start a sexp.
               loop-indentation)))))

;; SLIME setup.

(defvar mdw-friendly-name "[mdw]"
  "How I want to be addressed.")
(defadvice slime-user-first-name
    (around mdw-use-friendly-name compile activate)
  (if mdw-friendly-name (setq ad-return-value mdw-friendly-name)
    ad-do-it))

(trap
 (if (not mdw-fast-startup)
     (progn
       (require 'slime-autoloads)
       (slime-setup '(slime-autodoc slime-c-p-c)))))

(let ((stuff '((cmucl ("cmucl"))
               (sbcl ("sbcl") :coding-system utf-8-unix)
               (clisp ("clisp") :coding-system utf-8-unix))))
  (or (boundp 'slime-lisp-implementations)
      (setq slime-lisp-implementations nil))
  (while stuff
    (let* ((head (car stuff))
           (found (assq (car head) slime-lisp-implementations)))
      (setq stuff (cdr stuff))
      (if found
          (rplacd found (cdr head))
        (setq slime-lisp-implementations
                (cons head slime-lisp-implementations))))))
(setq slime-default-lisp 'sbcl)

;; Hooks.

(progn
  (dolist (hook '(emacs-lisp-mode-hook
                  scheme-mode-hook
                  lisp-mode-hook
                  inferior-lisp-mode-hook
                  lisp-interaction-mode-hook
                  ielm-mode-hook
                  slime-repl-mode-hook))
    (add-hook hook 'mdw-misc-mode-config t)
    (add-hook hook 'mdw-fontify-lispy t))
  (add-hook 'lisp-mode-hook 'mdw-common-lisp-indent t)
  (add-hook 'inferior-lisp-mode-hook
            #'(lambda () (local-set-key "\C-m" 'comint-send-and-indent)) t))

;;;--------------------------------------------------------------------------
;;; 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)))))

(progn
  (add-hook 'smalltalk-mode 'mdw-misc-mode-config t)
  (add-hook 'smalltalk-mode 'mdw-fontify-smalltalk t))

;; m4.

(defun mdw-setup-m4 ()

  ;; Inexplicably, Emacs doesn't match braces in m4 mode.  This is very
  ;; annoying: fix it.
  (modify-syntax-entry ?{ "(")
  (modify-syntax-entry ?} ")")

  ;; Fill prefix.
  (mdw-standard-fill-prefix "\\([ \t]*\\(?:#+\\|\\<dnl\\>\\)[ \t]*\\)"))

(dolist (hook '(m4-mode-hook autoconf-mode-hook autotest-mode-hook))
  (add-hook hook #'mdw-misc-mode-config t)
  (add-hook hook #'mdw-setup-m4 t))

;; Make.

(progn
  (add-hook 'makefile-mode-hook 'mdw-misc-mode-config 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))

(eval-after-load "flyspell"
  '(define-key flyspell-mode-map "\C-\M-i" nil))

(progn
  (add-hook 'text-mode-hook 'mdw-text-mode t))

;;;--------------------------------------------------------------------------
;;; 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))))))

(defadvice term-exec-1 (around hack-environment compile activate)
  "Hack the environment inherited by inferiors in the terminal."
  (let ((process-environment (copy-tree process-environment)))
    (setenv "LD_PRELOAD" nil)
    ad-do-it))

(defadvice shell (around hack-environment compile activate)
  "Hack the environment inherited by inferiors in the shell."
  (let ((process-environment (copy-tree process-environment)))
    (setenv "LD_PRELOAD" nil)
    ad-do-it))

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

(defvar git-grep-command
  "env GIT_PAGER=cat git grep --no-color -nH -e "
  "*The default command for \\[git-grep].")

(defvar git-grep-history nil)

(defun git-grep (command-args)
  "Run `git grep' with user-specified args and collect output in a buffer."
  (interactive
   (list (read-shell-command "Run git grep (like this): "
                             git-grep-command 'git-grep-history)))
  (let ((grep-use-null-device nil))
    (grep command-args)))

;;;--------------------------------------------------------------------------
;;; Magit configuration.

(setq magit-diff-refine-hunk 't
      magit-view-git-manual-method 'man
      magit-log-margin '(nil age magit-log-margin-width t 18)
      magit-wip-after-save-local-mode-lighter ""
      magit-wip-after-apply-mode-lighter ""
      magit-wip-before-change-mode-lighter "")
(eval-after-load "magit"
  '(progn (global-magit-file-mode 1)
          (magit-wip-after-save-mode 1)
          (magit-wip-after-apply-mode 1)
          (magit-wip-before-change-mode 1)
          (add-to-list 'magit-no-confirm 'safe-with-wip)
          (add-to-list 'magit-no-confirm 'trash)
          (push '(:eval (if (or magit-wip-after-save-local-mode
                                magit-wip-after-apply-mode
                                magit-wip-before-change-mode)
                            (format " wip:%s%s%s"
                                    (if magit-wip-after-apply-mode "A" "")
                                    (if magit-wip-before-change-mode "C" "")
                                    (if magit-wip-after-save-local-mode "S" ""))))
                minor-mode-alist)
          (dolist (popup '(magit-diff-popup
                           magit-diff-refresh-popup
                           magit-diff-mode-refresh-popup
                           magit-revision-mode-refresh-popup))
            (magit-define-popup-switch popup ?R "Reverse diff" "-R"))))

(defadvice magit-wip-commit-buffer-file
    (around mdw-just-this-buffer activate compile)
  (let ((magit-save-repository-buffers nil)) ad-do-it))

(defadvice magit-discard
    (around mdw-delete-if-prefix-argument activate compile)
  (let ((magit-delete-by-moving-to-trash
         (and (null current-prefix-arg)
              magit-delete-by-moving-to-trash)))
    ad-do-it))

(setq magit-repolist-columns
        '(("Name" 16 magit-repolist-column-ident nil)
          ("Version" 18 magit-repolist-column-version nil)
          ("St" 2 magit-repolist-column-dirty nil)
          ("L<U" 3 mdw-repolist-column-unpulled-from-upstream nil)
          ("L>U" 3 mdw-repolist-column-unpushed-to-upstream nil)
          ("Path" 32 magit-repolist-column-path nil)))

(setq magit-repository-directories '(("~/etc/profile" . 0)
                                     ("~/src/" . 1)))

(defadvice magit-list-repos (around mdw-dirname () activate compile)
  "Make sure the returned names are directory names.
Otherwise child processes get started in the wrong directory and
there is sadness."
  (setq ad-return-value (mapcar #'file-name-as-directory ad-do-it)))

(defun mdw-repolist-column-unpulled-from-upstream (_id)
  "Insert number of upstream commits not in the current branch."
  (let ((upstream (magit-get-upstream-branch (magit-get-current-branch) t)))
    (and upstream
         (let ((n (cadr (magit-rev-diff-count "HEAD" upstream))))
           (propertize (number-to-string n) 'face
                       (if (> n 0) 'bold 'shadow))))))

(defun mdw-repolist-column-unpushed-to-upstream (_id)
  "Insert number of commits in the current branch but not its upstream."
  (let ((upstream (magit-get-upstream-branch (magit-get-current-branch) t)))
    (and upstream
         (let ((n (car (magit-rev-diff-count "HEAD" upstream))))
           (propertize (number-to-string n) 'face
                       (if (> n 0) 'bold 'shadow))))))

(defun mdw-try-smerge ()
  (save-excursion
    (goto-char (point-min))
    (when (re-search-forward "^<<<<<<< " nil t)
      (smerge-mode 1))))
(add-hook 'find-file-hook 'mdw-try-smerge t)

;;;--------------------------------------------------------------------------
;;; GUD, and especially GDB.

;; Inhibit window dedication.  I mean, seriously, wtf?
(defadvice gdb-display-buffer (after mdw-undedicated (buf) compile activate)
  "Don't make windows dedicated.  Seriously."
  (set-window-dedicated-p ad-return-value nil))
(defadvice gdb-set-window-buffer
    (after mdw-undedicated (name &optional ignore-dedicated window)
     compile activate)
  "Don't make windows dedicated.  Seriously."
  (set-window-dedicated-p (or window (selected-window)) nil))

;;;--------------------------------------------------------------------------
;;; Man pages.

;; Turn off `noip' when running `man': it interferes with `man-db''s own
;; seccomp(2)-based sandboxing, which is (in this case, at least) strictly
;; better.
(defadvice Man-getpage-in-background
    (around mdw-inhibit-noip (topic) compile activate)
  "Inhibit the `noip' preload hack when invoking `man'."
  (let* ((old-preload (getenv "LD_PRELOAD"))
         (preloads (and old-preload
                        (save-match-data (split-string old-preload ":"))))
         (any nil)
         (filtered nil))
    (save-match-data
      (while preloads
        (let ((item (pop preloads)))
          (if (string-match  "\\(/\\|^\\)noip\.so\\(:\\|$\\)" item)
              (setq any t)
            (push item filtered)))))
    (if any
        (unwind-protect
            (progn
              (setenv "LD_PRELOAD"
                      (and filtered
                           (with-output-to-string
                             (setq filtered (nreverse filtered))
                             (let ((first t))
                               (while filtered
                                 (if first (setq first nil)
                                   (write-char ?:))
                                 (write-string (pop filtered)))))))
              ad-do-it)
          (setenv "LD_PRELOAD" old-preload))
      ad-do-it)))

;;;--------------------------------------------------------------------------
;;; MPC configuration.

(eval-when-compile (trap (require 'mpc)))

(setq mpc-browser-tags '(Artist|Composer|Performer Album|Playlist))

(defun mdw-mpc-now-playing ()
  (interactive)
  (require 'mpc)
  (save-excursion
    (set-buffer (mpc-proc-cmd (mpc-proc-cmd-list '("status" "currentsong"))))
    (mpc--status-callback))
  (let ((state (cdr (assq 'state mpc-status))))
    (cond ((member state '("stop"))
           (message "mpd stopped."))
          ((member state '("play" "pause"))
           (let* ((artist (cdr (assq 'Artist mpc-status)))
                  (album (cdr (assq 'Album mpc-status)))
                  (title (cdr (assq 'Title mpc-status)))
                  (file (cdr (assq 'file mpc-status)))
                  (duration-string (cdr (assq 'Time mpc-status)))
                  (time-string (cdr (assq 'time mpc-status)))
                  (time (and time-string
                             (string-to-number
                              (if (string-match ":" time-string)
                                  (substring time-string
                                             0 (match-beginning 0))
                                (time-string)))))
                  (duration (and duration-string
                                 (string-to-number duration-string)))
                  (pos (and time duration
                            (format " [%d:%02d/%d:%02d]"
                                    (/ time 60) (mod time 60)
                                    (/ duration 60) (mod duration 60))))
                  (fmt (cond ((and artist title)
                              (format "`%s' by %s%s" title artist
                                      (if album (format ", from `%s'" album)
                                        "")))
                             (file
                              (format "`%s' (no tags)" file))
                             (t
                              "(no idea what's playing!)"))))
             (if (string= state "play")
                 (message "mpd playing %s%s" fmt (or pos ""))
               (message "mpd paused in %s%s" fmt (or pos "")))))
          (t
           (message "mpd in unknown state `%s'" state)))))

(defmacro mdw-define-mpc-wrapper (func bvl interactive &rest body)
  `(defun ,func ,bvl
     (interactive ,@interactive)
     (require 'mpc)
     ,@body
     (mdw-mpc-now-playing)))

(mdw-define-mpc-wrapper mdw-mpc-play-or-pause () nil
  (if (member (cdr (assq 'state (mpc-cmd-status))) '("play"))
      (mpc-pause)
    (mpc-play)))

(mdw-define-mpc-wrapper mdw-mpc-next () nil (mpc-next))
(mdw-define-mpc-wrapper mdw-mpc-prev () nil (mpc-prev))
(mdw-define-mpc-wrapper mdw-mpc-stop () nil (mpc-stop))

(defun mdw-mpc-louder (step)
  (interactive (list (if current-prefix-arg
                         (prefix-numeric-value current-prefix-arg)
                       +10)))
  (mpc-proc-cmd (format "volume %+d" step)))

(defun mdw-mpc-quieter (step)
  (interactive (list (if current-prefix-arg
                         (prefix-numeric-value current-prefix-arg)
                       +10)))
  (mpc-proc-cmd (format "volume %+d" (- step))))

(defun mdw-mpc-hack-lines (arg interactivep func)
  (if (and interactivep (use-region-p))
      (let ((from (region-beginning)) (to (region-end)))
        (goto-char from)
        (beginning-of-line)
        (funcall func)
        (forward-line)
        (while (< (point) to)
          (funcall func)
          (forward-line)))
    (let ((n (prefix-numeric-value arg)))
      (cond ((minusp n)
             (unless (bolp)
               (beginning-of-line)
               (funcall func)
               (incf n))
             (while (minusp n)
               (forward-line -1)
               (funcall func)
               (incf n)))
            (t
             (beginning-of-line)
             (while (plusp n)
               (funcall func)
               (forward-line)
               (decf n)))))))

(defun mdw-mpc-select-one ()
  (when (and (get-char-property (point) 'mpc-file)
             (not (get-char-property (point) 'mpc-select)))
    (mpc-select-toggle)))

(defun mdw-mpc-unselect-one ()
  (when (get-char-property (point) 'mpc-select)
    (mpc-select-toggle)))

(defun mdw-mpc-select (&optional arg interactivep)
  (interactive (list current-prefix-arg t))
  (mdw-mpc-hack-lines arg interactivep 'mdw-mpc-select-one))

(defun mdw-mpc-unselect (&optional arg interactivep)
  (interactive (list current-prefix-arg t))
  (mdw-mpc-hack-lines arg interactivep 'mdw-mpc-unselect-one))

(defun mdw-mpc-unselect-backwards (arg)
  (interactive "p")
  (mdw-mpc-hack-lines (- arg) t 'mdw-mpc-unselect-one))

(defun mdw-mpc-unselect-all ()
  (interactive)
  (setq mpc-select nil)
  (mpc-selection-refresh))

(defun mdw-mpc-next-line (arg)
  (interactive "p")
  (beginning-of-line)
  (forward-line arg))

(defun mdw-mpc-previous-line (arg)
  (interactive "p")
  (beginning-of-line)
  (forward-line (- arg)))

(defun mdw-mpc-playlist-add (&optional arg interactivep)
  (interactive (list current-prefix-arg t))
  (let ((mpc-select mpc-select))
    (when (or arg (and interactivep (use-region-p)))
      (setq mpc-select nil)
      (mdw-mpc-hack-lines arg interactivep 'mdw-mpc-select-one))
    (setq mpc-select (reverse mpc-select))
    (mpc-playlist-add)))

(defun mdw-mpc-playlist-delete (&optional arg interactivep)
  (interactive (list current-prefix-arg t))
  (setq mpc-select (nreverse mpc-select))
  (mpc-select-save
    (when (or arg (and interactivep (use-region-p)))
      (setq mpc-select nil)
      (mpc-selection-refresh)
      (mdw-mpc-hack-lines arg interactivep 'mdw-mpc-select-one))
      (mpc-playlist-delete)))

(defun mdw-mpc-hack-tagbrowsers ()
  (setq-local mode-line-format
                '("%e"
                  mode-line-frame-identification
                  mode-line-buffer-identification)))
(add-hook 'mpc-tagbrowser-mode-hook 'mdw-mpc-hack-tagbrowsers)

(defun mdw-mpc-hack-songs ()
  (setq-local header-line-format
              ;; '("MPC " mpc-volume " " mpc-current-song)
              (list (propertize " " 'display '(space :align-to 0))
                    ;; 'mpc-songs-format-description
                    '(:eval
                      (let ((deactivate-mark) (hscroll (window-hscroll)))
                        (with-temp-buffer
                          (mpc-format mpc-songs-format 'self hscroll)
                          ;; That would be simpler than the hscroll handling in
                          ;; mpc-format, but currently move-to-column does not
                          ;; recognize :space display properties.
                          ;; (move-to-column hscroll)
                          ;; (delete-region (point-min) (point))
                          (buffer-string)))))))
(add-hook 'mpc-songs-mode-hook 'mdw-mpc-hack-songs)

(eval-after-load "mpc"
  '(progn
     (define-key mpc-mode-map "m" 'mdw-mpc-select)
     (define-key mpc-mode-map "u" 'mdw-mpc-unselect)
     (define-key mpc-mode-map "\177" 'mdw-mpc-unselect-backwards)
     (define-key mpc-mode-map "\e\177" 'mdw-mpc-unselect-all)
     (define-key mpc-mode-map "n" 'mdw-mpc-next-line)
     (define-key mpc-mode-map "p" 'mdw-mpc-previous-line)
     (define-key mpc-mode-map "/" 'mpc-songs-search)
     (setq mpc-songs-mode-map (make-sparse-keymap))
     (set-keymap-parent mpc-songs-mode-map mpc-mode-map)
     (define-key mpc-songs-mode-map "l" 'mpc-playlist)
     (define-key mpc-songs-mode-map "+" 'mdw-mpc-playlist-add)
     (define-key mpc-songs-mode-map "-" 'mdw-mpc-playlist-delete)
     (define-key mpc-songs-mode-map "\r" 'mpc-songs-jump-to)))

;;;--------------------------------------------------------------------------
;;; 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)