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+ ;; C code editing commands for Emacs
+;; Copyright (C) 1985, 1986, 1987 Free Software Foundation, Inc.
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs 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 1, or (at your option)
+;; any later version.
+
+;; GNU Emacs 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 GNU Emacs; see the file COPYING.  If not, write to
+;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+
+
+(defvar c-mode-abbrev-table nil
+  "Abbrev table in use in C mode.")
+(define-abbrev-table 'c-mode-abbrev-table ())
+
+(defvar c-mode-map ()
+  "Keymap used in C mode.")
+(if c-mode-map
+    ()
+  (setq c-mode-map (make-sparse-keymap))
+  (define-key c-mode-map "{" 'electric-c-brace)
+  (define-key c-mode-map "}" 'electric-c-brace)
+  (define-key c-mode-map ";" 'electric-c-semi)
+  (define-key c-mode-map "#" 'electric-c-sharp-sign)
+  (define-key c-mode-map ":" 'electric-c-terminator)
+  (define-key c-mode-map "\e\C-h" 'mark-c-function)
+  (define-key c-mode-map "\e\C-q" 'indent-c-exp)
+  (define-key c-mode-map "\ea" 'c-beginning-of-statement)
+  (define-key c-mode-map "\ee" 'c-end-of-statement)
+  (define-key c-mode-map "\eq" 'c-fill-paragraph)
+  (define-key c-mode-map "\177" 'backward-delete-char-untabify)
+  (define-key c-mode-map "\t" 'c-indent-command))
+
+;; cmacexp is lame because it uses no preprocessor symbols.
+;; It isn't very extensible either -- hardcodes /lib/cpp.
+(autoload 'c-macro-expand "cmacexp"
+  "Display the result of expanding all C macros occurring in the region.
+The expansion is entirely correct because it uses the C preprocessor."
+  t)
+
+(defvar c-mode-syntax-table nil
+  "Syntax table in use in C-mode buffers.")
+
+(if c-mode-syntax-table
+    ()
+  (setq c-mode-syntax-table (make-syntax-table))
+  (modify-syntax-entry ?\\ "\\" c-mode-syntax-table)
+  (modify-syntax-entry ?/ ". 14" c-mode-syntax-table)
+  (modify-syntax-entry ?* ". 23" c-mode-syntax-table)
+  (modify-syntax-entry ?+ "." c-mode-syntax-table)
+  (modify-syntax-entry ?- "." c-mode-syntax-table)
+  (modify-syntax-entry ?= "." c-mode-syntax-table)
+  (modify-syntax-entry ?% "." c-mode-syntax-table)
+  (modify-syntax-entry ?< "." c-mode-syntax-table)
+  (modify-syntax-entry ?> "." c-mode-syntax-table)
+  (modify-syntax-entry ?& "." c-mode-syntax-table)
+  (modify-syntax-entry ?| "." c-mode-syntax-table)
+  (modify-syntax-entry ?\' "\"" c-mode-syntax-table))
+
+(defconst c-indent-level 2
+  "*Indentation of C statements with respect to containing block.")
+(defconst c-brace-imaginary-offset 0
+  "*Imagined indentation of a C open brace that actually follows a statement.")
+(defconst c-brace-offset 0
+  "*Extra indentation for braces, compared with other text in same context.")
+(defconst c-argdecl-indent 5
+  "*Indentation level of declarations of C function arguments.")
+(defconst c-label-offset -2
+  "*Offset of C label lines and case statements relative to usual indentation.")
+(defconst c-continued-statement-offset 2
+  "*Extra indent for lines not starting new statements.")
+(defconst c-continued-brace-offset 0
+  "*Extra indent for substatements that start with open-braces.
+This is in addition to c-continued-statement-offset.")
+(defconst c-style-alist
+  '(("GNU"
+     (c-indent-level               .  2)
+     (c-argdecl-indent             .  5)
+     (c-brace-offset               .  0)
+     (c-label-offset               . -2)
+     (c-continued-statement-offset .  2))
+    ("K&R"
+     (c-indent-level               .  5)
+     (c-argdecl-indent             .  0)
+     (c-brace-offset               . -5)
+     (c-label-offset               . -5)
+     (c-continued-statement-offset .  5))
+    ("BSD"
+     (c-indent-level               .  4)
+     (c-argdecl-indent             .  4)
+     (c-brace-offset               . -4)
+     (c-label-offset               . -4)
+     (c-continued-statement-offset .  4))
+    ("Whitesmith"
+     (c-indent-level               .  4)
+     (c-argdecl-indent             .  4)
+     (c-brace-offset               .  0)
+     (c-label-offset               . -4)
+     (c-continued-statement-offset .  4))))
+
+(defconst c-auto-newline nil
+  "*Non-nil means automatically newline before and after braces,
+and after colons and semicolons, inserted in C code.
+If you do not want a leading newline before braces then use:
+  (define-key c-mode-map "{" 'electric-c-semi)")
+
+(defconst c-tab-always-indent t
+  "*Non-nil means TAB in C mode should always reindent the current line,
+regardless of where in the line point is when the TAB command is used.")
+
+(defun set-c-style (&optional style)
+  "Set up the c-mode style variables from the c-style variable or if
+  STYLE argument is given, use that.  It makes the c indentation style 
+  variables buffer local."
+  (interactive)
+  (let ((c-styles (mapcar 'car c-style-alist)))
+    (if (interactive-p)
+        (setq style
+              (let ((style-string ; get style name with completion
+                     (completing-read
+                      (format "Set c mode indentation style to (default %s): "
+                              default-c-style)
+                      (vconcat c-styles)
+                      (function (lambda (arg) (memq arg c-styles)))
+                      )))
+                (if (string-equal "" style-string)
+                    default-c-style
+                  (intern style-string))
+                )))
+    (setq style (or style c-style)) ; use c-style if style is nil
+    (make-local-variable 'c-style)
+    (if (memq style c-styles)
+        (setq c-style style)
+      (error "Bad c style: %s" style)
+      )
+    (message "c-style: %s" c-style)
+    ; finally, set the indentation style variables making each one local
+    (mapcar (function (lambda (c-style-pair)
+                        (make-local-variable (car c-style-pair))
+                        (set (car c-style-pair)
+                             (cdr c-style-pair))))
+            (cdr (assq c-style c-style-alist)))
+    c-style
+    )
+  )
+
+(defun c-mode ()
+  "Major mode for editing C code.
+Expression and list commands understand all C brackets.
+Tab indents for C code.
+Comments are delimited with /* ... */.
+Paragraphs are separated by blank lines only.
+Delete converts tabs to spaces as it moves back.
+\\{c-mode-map}
+Variables controlling indentation style:
+ c-tab-always-indent
+    Non-nil means TAB in C mode should always reindent the current line,
+    regardless of where in the line point is when the TAB command is used.
+ c-auto-newline
+    Non-nil means automatically newline before and after braces,
+    and after colons and semicolons, inserted in C code.
+ c-indent-level
+    Indentation of C statements within surrounding block.
+    The surrounding block's indentation is the indentation
+    of the line on which the open-brace appears.
+ c-continued-statement-offset
+    Extra indentation given to a substatement, such as the
+    then-clause of an if or body of a while.
+ c-continued-brace-offset
+    Extra indentation given to a brace that starts a substatement.
+    This is in addition to c-continued-statement-offset.
+ c-brace-offset
+    Extra indentation for line if it starts with an open brace.
+ c-brace-imaginary-offset
+    An open brace following other text is treated as if it were
+    this far to the right of the start of its line.
+ c-argdecl-indent
+    Indentation level of declarations of C function arguments.
+ c-label-offset
+    Extra indentation for line that is a label, or case or default.
+
+Settings for K&R and BSD indentation styles are
+  c-indent-level                5    8
+  c-continued-statement-offset  5    8
+  c-brace-offset               -5   -8
+  c-argdecl-indent              0    8
+  c-label-offset               -5   -8
+
+Turning on C mode calls the value of the variable c-mode-hook with no args,
+if that value is non-nil."
+  (interactive)
+  (kill-all-local-variables)
+  (use-local-map c-mode-map)
+  (setq major-mode 'c-mode)
+  (setq mode-name "C")
+  (setq local-abbrev-table c-mode-abbrev-table)
+  (set-syntax-table c-mode-syntax-table)
+  (make-local-variable 'paragraph-start)
+  (setq paragraph-start (concat "^$\\|" page-delimiter))
+  (make-local-variable 'paragraph-separate)
+  (setq paragraph-separate paragraph-start)
+  (make-local-variable 'paragraph-ignore-fill-prefix)
+  (setq paragraph-ignore-fill-prefix t)
+  (make-local-variable 'indent-line-function)
+  (setq indent-line-function 'c-indent-line)
+  (make-local-variable 'indent-region-function)
+  (setq indent-region-function 'c-indent-region)
+  (make-local-variable 'require-final-newline)
+  (setq require-final-newline t)
+  (make-local-variable 'comment-start)
+  (setq comment-start "/* ")
+  (make-local-variable 'comment-end)
+  (setq comment-end " */")
+  (make-local-variable 'comment-column)
+  (setq comment-column 32)
+  (make-local-variable 'comment-start-skip)
+  (setq comment-start-skip "/\\*+ *")
+  (make-local-variable 'comment-indent-hook)
+  (setq comment-indent-hook 'c-comment-indent)
+  (make-local-variable 'parse-sexp-ignore-comments)
+  (setq parse-sexp-ignore-comments t)
+  (run-hooks 'c-mode-hook))
+
+;; This is used by indent-for-comment
+;; to decide how much to indent a comment in C code
+;; based on its context.
+(defun c-comment-indent ()
+  (if (looking-at "^/\\*")
+      0                         ;Existing comment at bol stays there.
+    (let ((opoint (point)))
+      (save-excursion
+        (beginning-of-line)
+        (cond ((looking-at "[ \t]*}[ \t]*\\($\\|/\\*\\)")
+               ;; A comment following a solitary close-brace
+               ;; should have only one space.
+               (search-forward "}")
+               (1+ (current-column)))
+              ((or (looking-at "^#[ \t]*endif[ \t]*")
+                   (looking-at "^#[ \t]*else[ \t]*"))
+               7)                       ;2 spaces after #endif
+              ((progn
+                 (goto-char opoint)
+                 (skip-chars-backward " \t")
+                 (and (= comment-column 0) (bolp)))
+               ;; If comment-column is 0, and nothing but space
+               ;; before the comment, align it at 0 rather than 1.
+               0)
+              (t
+               (max (1+ (current-column))       ;Else indent at comment column
+                    comment-column)))))))       ; except leave at least one space.
+
+(defun c-fill-paragraph (&optional arg)
+  "Like \\[fill-paragraph] but handle C comments.
+If point is inside a comment, the current paragraph of the comment
+is filled, preserving the comment indentation or line-starting decorations."
+  (interactive "P")
+  (let ((first-line
+         (save-excursion
+           (beginning-of-line)
+           (skip-chars-forward " \t")
+           (looking-at comment-start-skip))))
+    (if (or first-line
+            (eq (calculate-c-indent) t))
+        ;; Inside a comment: fill one comment paragraph.
+        (let ((fill-prefix
+               ;; The prefix for each line of this paragraph
+               ;; is the appropriate part of the start of this line,
+               ;; up to the column at which text should be indented.
+               (save-excursion
+                 (beginning-of-line)
+                 (if (looking-at "[ \t]*/\\*.*\\*/")
+                     (progn (re-search-forward comment-start-skip)
+                            (make-string (current-column) ?\ ))
+                   (if first-line (forward-line 1))
+                   (buffer-substring (point)
+                                     (progn
+                                       (move-to-column
+                                        (calculate-c-indent-within-comment t)
+                                        t)
+                                       (point))))))
+              (paragraph-start
+               ;; Lines containing just a comment start or just an end
+               ;; should not be filled into paragraphs they are next to.
+               (concat paragraph-start
+                       "\\|^[ \t]*/\\*[ \t]*$\\|^[ \t]*\\*/[ \t]*$\\|^[^ \t/*]"))
+              (paragraph-separate
+               (concat paragraph-separate
+                       "\\|^[ \t]*/\\*[ \t]*$\\|^[ \t]*\\*/[ \t]*$\\|^[^ \t/*]")))
+          (save-restriction
+            ;; Don't fill the comment together with the code following it.
+            (narrow-to-region (point-min)
+                              (save-excursion
+                                (search-forward "*/" nil 'move)
+                                (forward-line 1)
+                                (point)))
+            (fill-paragraph arg)
+            (save-excursion
+              (search-forward "*/")
+              (beginning-of-line)
+              (if (looking-at "[ \t]*\\*/")
+                  (delete-indentation)))))
+      ;; Outside of comments: do ordinary filling.
+      (fill-paragraph arg))))
+
+(defun electric-c-brace (arg)
+  "Insert character and correct line's indentation."
+  (interactive "P")
+  (let (insertpos)
+    (if (and (not arg)
+             (eolp)
+             (or (save-excursion
+                   (skip-chars-backward " \t")
+                   (bolp))
+                 (if c-auto-newline (progn (c-indent-line) (newline) t) nil)))
+        (progn
+          (insert last-command-char)
+          (c-indent-line)
+          (if c-auto-newline
+              (progn
+                (newline)
+                ;; (newline) may have done auto-fill
+                (setq insertpos (- (point) 2))
+                (c-indent-line)))
+          (save-excursion
+            (if insertpos (goto-char (1+ insertpos)))
+            (delete-char -1))))
+    (if insertpos
+        (save-excursion
+          (goto-char insertpos)
+          (self-insert-command (prefix-numeric-value arg)))
+      (self-insert-command (prefix-numeric-value arg)))))
+
+(defun electric-c-sharp-sign (arg)
+  "Insert character and correct line's indentation."
+  (interactive "P")
+  (if (save-excursion
+        (skip-chars-backward " \t")
+        (bolp))
+      (let ((c-auto-newline nil))
+        (electric-c-terminator arg))
+    (self-insert-command (prefix-numeric-value arg))))
+
+(defun electric-c-semi (arg)
+  "Insert character and correct line's indentation."
+  (interactive "P")
+  (if c-auto-newline
+      (electric-c-terminator arg)
+    (self-insert-command (prefix-numeric-value arg))))
+
+(defun electric-c-terminator (arg)
+  "Insert character and correct line's indentation."
+  (interactive "P")
+  (let (insertpos (end (point)))
+    (if (and (not arg) (eolp)
+             (not (save-excursion
+                    (beginning-of-line)
+                    (skip-chars-forward " \t")
+                    (or (= (following-char) ?#)
+                        ;; Colon is special only after a label, or case ....
+                        ;; So quickly rule out most other uses of colon
+                        ;; and do no indentation for them.
+                        (and (eq last-command-char ?:)
+                             (not (looking-at "case[ \t'/(]\\|default\\>"))
+                             (save-excursion
+                               (skip-chars-forward "a-zA-Z0-9_$")
+                               (skip-chars-forward " \t")
+                               (< (point) end)))
+                        (progn
+                          (beginning-of-defun)
+                          (let ((pps (parse-partial-sexp (point) end)))
+                            (or (nth 3 pps) (nth 4 pps) (nth 5 pps))))))))
+        (progn
+          (insert last-command-char)
+          (c-indent-line)
+          (and c-auto-newline
+               (not (c-inside-parens-p))
+               (progn
+                 (newline)
+                 ;; (newline) may have done auto-fill
+                 (setq insertpos (- (point) 2))
+                 (c-indent-line)))
+          (save-excursion
+            (if insertpos (goto-char (1+ insertpos)))
+            (delete-char -1))))
+    (if insertpos
+        (save-excursion
+          (goto-char insertpos)
+          (self-insert-command (prefix-numeric-value arg)))
+      (self-insert-command (prefix-numeric-value arg)))))
+
+(defun c-inside-parens-p ()
+  (condition-case ()
+      (save-excursion
+        (save-restriction
+          (narrow-to-region (point)
+                            (progn (beginning-of-defun) (point)))
+          (goto-char (point-max))
+          (= (char-after (or (scan-lists (point) -1 1) (point-min))) ?\()))
+    (error nil)))
+
+(defun c-indent-command (&optional whole-exp)
+  "Indent current line as C code, or in some cases insert a tab character.
+If `c-tab-always-indent' is non-nil (the default), always indent current line.
+Otherwise, indent the current line only if point is at the left margin or
+in the line's indentation; otherwise insert a tab.
+
+A numeric argument, regardless of its value, means indent rigidly all the
+lines of the expression starting after point so that this line becomes
+properly indented.  The relative indentation among the lines of the
+expression are preserved."
+  (interactive "P")
+  (if whole-exp
+      ;; If arg, always indent this line as C
+      ;; and shift remaining lines of expression the same amount.
+      (let ((shift-amt (c-indent-line))
+            beg end)
+        (save-excursion
+          (if c-tab-always-indent
+              (beginning-of-line))
+          ;; Find beginning of following line.
+          (save-excursion
+            (forward-line 1) (setq beg (point)))
+          ;; Find first beginning-of-sexp for sexp extending past this line.
+          (while (< (point) beg)
+            (forward-sexp 1)
+            (setq end (point))
+            (skip-chars-forward " \t\n")))
+        (if (> end beg)
+            (indent-code-rigidly beg end shift-amt "#")))
+    (if (and (not c-tab-always-indent)
+             (save-excursion
+               (skip-chars-backward " \t")
+               (not (bolp))))
+        (insert-tab)
+      (c-indent-line))))
+
+(defun c-indent-line ()
+  "Indent current line as C code.
+Return the amount the indentation changed by."
+  (let ((indent (calculate-c-indent nil))
+        beg shift-amt
+        (case-fold-search nil)
+        (pos (- (point-max) (point))))
+    (beginning-of-line)
+    (setq beg (point))
+    (cond ((eq indent nil)
+           (setq indent (current-indentation)))
+          ((eq indent t)
+           (setq indent (calculate-c-indent-within-comment)))
+          ((looking-at "[ \t]*#")
+           (setq indent 0))
+          (t
+           (skip-chars-forward " \t")
+           (if (listp indent) (setq indent (car indent)))
+           (cond ((or (looking-at "case[ \t'/(]\\|default\\>")
+                      (and (looking-at "[A-Za-z]")
+                           (save-excursion
+                             (forward-sexp 1)
+                             (looking-at ":"))))
+                  (setq indent (max 1 (+ indent c-label-offset))))
+                 ((and (looking-at "else\\b")
+                       (not (looking-at "else\\s_")))
+                  (setq indent (save-excursion
+                                 (c-backward-to-start-of-if)
+                                 (current-indentation))))
+                 ((looking-at "}[ \t]*else")
+                  (setq indent (save-excursion
+                                 (forward-char)
+                                 (backward-sexp)
+                                 (current-indentation))))
+                 ((and (looking-at "while\\b")
+                       (save-excursion
+                         (c-backward-to-start-of-do)))
+                  ;; This is a `while' that ends a do-while.
+                  (setq indent (save-excursion
+                                 (c-backward-to-start-of-do)
+                                 (current-indentation))))
+                 ((= (following-char) ?})
+                  (setq indent (- indent c-indent-level)))
+                 ((= (following-char) ?{)
+                  (setq indent (+ indent c-brace-offset))))))
+    (skip-chars-forward " \t")
+    (setq shift-amt (- indent (current-column)))
+    (if (zerop shift-amt)
+        (if (> (- (point-max) pos) (point))
+            (goto-char (- (point-max) pos)))
+      (delete-region beg (point))
+      (indent-to indent)
+      ;; If initial point was within line's indentation,
+      ;; position after the indentation.  Else stay at same point in text.
+      (if (> (- (point-max) pos) (point))
+          (goto-char (- (point-max) pos))))
+    shift-amt))
+
+(defun calculate-c-indent (&optional parse-start)
+  "Return appropriate indentation for current line as C code.
+In usual case returns an integer: the column to indent to.
+Returns nil if line starts inside a string, t if in a comment."
+  (save-excursion
+    (beginning-of-line)
+    (let ((indent-point (point))
+          (case-fold-search nil)
+          state
+          containing-sexp)
+      (if parse-start
+          (goto-char parse-start)
+        (beginning-of-defun))
+      (while (< (point) indent-point)
+        (setq parse-start (point))
+        (setq state (parse-partial-sexp (point) indent-point 0))
+        (setq containing-sexp (car (cdr state))))
+      (cond ((or (nth 3 state) (nth 4 state))
+             ;; return nil or t if should not change this line
+             (nth 4 state))
+            ((null containing-sexp)
+             ;; Line is at top level.  May be data or function definition,
+             ;; or may be function argument declaration.
+             ;; Indent like the previous top level line
+             ;; unless that ends in a closeparen without semicolon,
+             ;; in which case this line is the first argument decl.
+             (goto-char indent-point)
+             (skip-chars-forward " \t")
+             (if (= (following-char) ?{)
+                 0   ; Unless it starts a function body
+               (c-backward-to-noncomment (or parse-start (point-min)))
+               ;; Look at previous line that's at column 0
+               ;; to determine whether we are in top-level decls
+               ;; or function's arg decls.  Set basic-indent accordingly.
+               (let ((basic-indent
+                      (save-excursion
+                        (re-search-backward "^[^ \^L\t\n#]" nil 'move)
+                        (if (and (looking-at "\\sw\\|\\s_")
+                                 (looking-at "[^\"\n=]*(")
+                                 (progn
+                                   (goto-char (1- (match-end 0)))
+                                   (forward-sexp 1)
+                                   (skip-chars-forward " \t\f")
+                                   (and (< (point) indent-point)
+                                        (not (memq (following-char)
+                                                   '(?\, ?\;))))))
+                            c-argdecl-indent 0))))
+                 basic-indent)))
+
+;;               ;; Now add a little if this is a continuation line.
+;;               (+ basic-indent (if (or (bobp)
+;;                                       (memq (preceding-char) '(?\) ?\; ?\}))
+;;                                       ;; Line with zero indentation
+;;                                       ;; is probably the return-type
+;;                                       ;; of a function definition,
+;;                                       ;; so following line is function name.
+;;                                       (= (current-indentation) 0))
+;;                                   0 c-continued-statement-offset))
+
+            ((/= (char-after containing-sexp) ?{)
+             ;; line is expression, not statement:
+             ;; indent to just after the surrounding open.
+             (goto-char (1+ containing-sexp))
+             (current-column))
+            (t
+             ;; Statement level.  Is it a continuation or a new statement?
+             ;; Find previous non-comment character.
+             (goto-char indent-point)
+             (c-backward-to-noncomment containing-sexp)
+             ;; Back up over label lines, since they don't
+             ;; affect whether our line is a continuation.
+             (while (or (eq (preceding-char) ?\,)
+                        (and (eq (preceding-char) ?:)
+                             (or (eq (char-after (- (point) 2)) ?\')
+                                 (memq (char-syntax (char-after (- (point) 2)))
+                                       '(?w ?_)))))
+               (if (eq (preceding-char) ?\,)
+                   (progn (forward-char -1)
+                          (c-backward-to-start-of-continued-exp containing-sexp)))
+               (beginning-of-line)
+               (c-backward-to-noncomment containing-sexp))
+             ;; Check for a preprocessor statement or its continuation lines.
+             ;; Move back to end of previous non-preprocessor line.
+             (let ((found (point)) stop)
+               (while (not stop)
+                 (cond ((save-excursion (end-of-line 0)
+                                        (= (preceding-char) ?\\))
+                        (end-of-line 0))
+                       ;; This line is not preceded by a backslash.
+                       ;; So either it starts a preprocessor command
+                       ;; or any following continuation lines
+                       ;; should not be skipped.
+                       ((progn (beginning-of-line) (= (following-char) ?#))
+                        (end-of-line 0)
+                        (setq found (point)))
+                       (t (setq stop t))))
+               (goto-char found))
+             ;; Now we get the answer.
+             (if (and (not (memq (preceding-char) '(nil ?\, ?\; ?\} ?\{)))
+                      ;; But don't treat a line with a close-brace
+                      ;; as a continuation.  It is probably the
+                      ;; end of an enum type declaration.
+                      (save-excursion
+                        (goto-char indent-point)
+                        (skip-chars-forward " \t")
+                        (not (= (following-char) ?}))))
+                 ;; This line is continuation of preceding line's statement;
+                 ;; indent  c-continued-statement-offset  more than the
+                 ;; previous line of the statement.
+                 (progn
+                   (c-backward-to-start-of-continued-exp containing-sexp)
+                   (+ c-continued-statement-offset (current-column)
+                      (if (save-excursion (goto-char indent-point)
+                                          (skip-chars-forward " \t")
+                                          (eq (following-char) ?{))
+                          c-continued-brace-offset 0)))
+               ;; This line starts a new statement.
+               ;; Position following last unclosed open.
+               (goto-char containing-sexp)
+               ;; Is line first statement after an open-brace?
+               (or
+                 ;; If no, find that first statement and indent like it.
+                 (save-excursion
+                   (forward-char 1)
+                   (let ((colon-line-end 0))
+                     (while (progn (skip-chars-forward " \t\n")
+                                   (looking-at "#\\|/\\*\\|case[ \t\n'/(].*:\\|[a-zA-Z0-9_$]*:"))
+                       ;; Skip over comments and labels following openbrace.
+                       (cond ((= (following-char) ?\#)
+                              (forward-line 1))
+                             ((= (following-char) ?\/)
+                              (forward-char 2)
+                              (search-forward "*/" nil 'move))
+                             ;; case or label:
+                             (t
+                              (save-excursion (end-of-line)
+                                              (setq colon-line-end (point)))
+                              (search-forward ":"))))
+                     ;; The first following code counts
+                     ;; if it is before the line we want to indent.
+                     (and (< (point) indent-point)
+                          (if (> colon-line-end (point))
+                              (- (current-indentation) c-label-offset)
+                            (current-column)))))
+                 ;; If no previous statement,
+                 ;; indent it relative to line brace is on.
+                 ;; For open brace in column zero, don't let statement
+                 ;; start there too.  If c-indent-level is zero,
+                 ;; use c-brace-offset + c-continued-statement-offset instead.
+                 ;; For open-braces not the first thing in a line,
+                 ;; add in c-brace-imaginary-offset.
+                 (+ (if (and (bolp) (zerop c-indent-level))
+                        (+ c-brace-offset c-continued-statement-offset)
+                      c-indent-level)
+                    ;; Move back over whitespace before the openbrace.
+                    ;; If openbrace is not first nonwhite thing on the line,
+                    ;; add the c-brace-imaginary-offset.
+                    (progn (skip-chars-backward " \t")
+                           (if (bolp) 0 c-brace-imaginary-offset))
+                    ;; If the openbrace is preceded by a parenthesized exp,
+                    ;; move to the beginning of that;
+                    ;; possibly a different line
+                    (progn
+                      (if (eq (preceding-char) ?\))
+                          (forward-sexp -1))
+                      ;; Get initial indentation of the line we are on.
+                      (current-indentation))))))))))
+
+(defun calculate-c-indent-within-comment (&optional after-star)
+  "Return the indentation amount for line inside a block comment.
+Optional arg AFTER-STAR means, if lines in the comment have a leading star,
+return the indentation of the text that would follow this star."
+  (let (end star-start)
+    (save-excursion
+      (beginning-of-line)
+      (skip-chars-forward " \t")
+      (setq star-start (= (following-char) ?\*))
+      (skip-chars-backward " \t\n")
+      (setq end (point))
+      (beginning-of-line)
+      (skip-chars-forward " \t")
+      (if after-star
+          (and (looking-at "\\*")
+               (re-search-forward "\\*[ \t]*")))
+      (and (re-search-forward "/\\*[ \t]*" end t)
+           star-start
+           (not after-star)
+           (goto-char (1+ (match-beginning 0))))
+      (if (and (looking-at "[ \t]*$") (= (preceding-char) ?\*))
+          (1+ (current-column))
+        (current-column)))))
+
+
+(defun c-backward-to-noncomment (lim)
+  (let (opoint stop)
+    (while (not stop)
+      (skip-chars-backward " \t\n\f" lim)
+      (setq opoint (point))
+      (if (and (>= (point) (+ 2 lim))
+               (save-excursion
+                 (forward-char -2)
+                 (looking-at "\\*/")))
+          (search-backward "/*" lim 'move)
+        (setq stop (or (<= (point) lim)
+                       (save-excursion
+                         (beginning-of-line)
+                         (skip-chars-forward " \t")
+                         (not (looking-at "#")))))
+        (or stop (beginning-of-line))))))
+
+(defun c-backward-to-start-of-continued-exp (lim)
+  (if (memq (preceding-char) '(?\) ?\"))
+      (forward-sexp -1))
+  (beginning-of-line)
+  (if (<= (point) lim)
+      (goto-char (1+ lim)))
+  (skip-chars-forward " \t"))
+
+(defun c-backward-to-start-of-if (&optional limit)
+  "Move to the start of the last \"unbalanced\" `if'."
+  (or limit (setq limit (save-excursion (beginning-of-defun) (point))))
+  (let ((if-level 1)
+        (case-fold-search nil))
+    (while (and (not (bobp)) (not (zerop if-level)))
+      (backward-sexp 1)
+      (cond ((looking-at "else\\b")
+             (setq if-level (1+ if-level)))
+            ((looking-at "if\\b")
+             (setq if-level (1- if-level)))
+            ((< (point) limit)
+             (setq if-level 0)
+             (goto-char limit))))))
+
+(defun c-backward-to-start-of-do (&optional limit)
+  "If point follows a `do' statement, move to beginning of it and return t.
+Otherwise return nil and don't move point."
+  (or limit (setq limit (save-excursion (beginning-of-defun) (point))))
+  (let ((first t)
+        (startpos (point))
+        (done nil))
+    (while (not done)
+      (let ((next-start (point)))
+        (condition-case nil
+            ;; Move back one token or one brace or paren group.
+            (backward-sexp 1)
+          ;; If we find an open-brace, we lose.
+          (error (setq done 'fail)))
+        (if done
+            nil
+          ;; If we reached a `do', we win.
+          (if (looking-at "do\\b")
+              (setq done 'succeed)
+            ;; Otherwise, if we skipped a semicolon, we lose.
+            ;; (Exception: we can skip one semicolon before getting
+            ;; to a the last token of the statement, unless that token
+            ;; is a close brace.)
+            (if (save-excursion
+                  (forward-sexp 1)
+                  (or (and (not first) (= (preceding-char) ?}))
+                      (search-forward ";" next-start t
+                                      (if (and first
+                                               (/= (preceding-char) ?}))
+                                          2 1))))
+                (setq done 'fail)
+              (setq first nil)
+              ;; If we go too far back in the buffer, we lose.
+              (if (< (point) limit)
+                  (setq done 'fail)))))))
+    (if (eq done 'succeed)
+        t
+      (goto-char startpos)
+      nil)))
+
+(defun c-beginning-of-statement (count)
+  "Go to the beginning of the innermost C statement.
+With prefix arg, go back N - 1 statements.  If already at the beginning of a
+statement then go to the beginning of the preceeding one."
+  (interactive "p")
+  (while (> count 0)
+    (c-beginning-of-statement-1)
+    (setq count (1- count)))
+  (while (< count 0)
+    (c-end-of-statement-1)
+    (setq count (1+ count))))
+
+(defun c-end-of-statement (count)
+  "Go to the end of the innermost C statement.
+With prefix arg, go forward N - 1 statements.  Moves forward to end of the
+next statement if already at end."
+  (interactive "p")
+  (c-beginning-of-statement (- count)))
+
+(defun c-beginning-of-statement-1 ()
+  (let ((last-begin (point))
+        (first t))
+    (condition-case ()
+        (progn
+          (while (and (not (bobp))
+                      (progn
+                        (backward-sexp 1)
+                        (or first
+                            (not (re-search-forward "[;{}]" last-begin t)))))
+            (setq last-begin (point) first nil))
+          (goto-char last-begin))
+      (error (if first (backward-up-list 1) (goto-char last-begin))))))
+
+(defun c-end-of-statement-1 ()
+  (condition-case ()
+      (progn
+        (while (and (not (eobp))
+                    (let ((beg (point)))
+                      (forward-sexp 1)
+                      (let ((end (point)))
+                        (save-excursion
+                          (goto-char beg)
+                          (not (re-search-forward "[;{}]" end t)))))))
+        (re-search-backward "[;}]")
+        (forward-char 1))
+    (error 
+     (let ((beg (point)))
+       (backward-up-list -1)
+       (let ((end (point)))
+         (goto-char beg)
+         (search-forward ";" end 'move))))))
+
+(defun mark-c-function ()
+  "Put mark at end of C function, point at beginning."
+  (interactive)
+  (push-mark (point))
+  (end-of-defun)
+  (push-mark (point))
+  (beginning-of-defun)
+  (backward-paragraph))
+
+(defun indent-c-exp (&optional endpos)
+  "Indent each line of the C grouping following point.
+If optional arg ENDPOS is given, indent each line, stopping when
+ENDPOS is encountered."
+  (interactive)
+  (let* ((indent-stack (list nil))
+         (opoint (point))  ;; May be altered below.
+         (contain-stack
+          (list (if endpos
+                    (let (funbeg)
+                      ;; Find previous fcn-start.
+                      (save-excursion (forward-char 1)
+                                      (beginning-of-defun)
+                                      (setq funbeg (point)))
+                      ;; Try to find containing open,
+                      ;; but don't scan past that fcn-start.
+                      (save-restriction
+                        (narrow-to-region funbeg (point))
+                        (condition-case nil
+                            (save-excursion
+                              (backward-up-list 1) (point))
+                          ;; We gave up: must be between fcns.
+                          ;; Set opoint to beg of prev fcn
+                          ;; since otherwise calculate-c-indent
+                          ;; will get wrong answers.
+                          (error (setq opoint funbeg)
+                                 (point)))))
+                  (point))))
+         (case-fold-search nil)
+         restart outer-loop-done inner-loop-done state ostate
+         this-indent last-sexp
+         at-else at-brace at-while
+         last-depth
+         (next-depth 0))
+    ;; If the braces don't match, get an error right away.
+    (save-excursion
+      (forward-sexp 1))
+    ;; Realign the comment on the first line, even though we don't reindent it.
+    (save-excursion
+      (let ((beg (point)))
+        (and (re-search-forward
+              comment-start-skip
+              (save-excursion (end-of-line) (point)) t)
+             ;; Make sure the comment starter we found
+             ;; is not actually in a string or quoted.
+             (let ((new-state
+                    (parse-partial-sexp beg (point)
+                                        nil nil state)))
+               (and (not (nth 3 new-state)) (not (nth 5 new-state))))
+            (progn (indent-for-comment) (beginning-of-line)))))
+    (save-excursion
+      (setq outer-loop-done nil)
+      (while (and (not (eobp))
+                  (if endpos (< (point) endpos)
+                    (not outer-loop-done)))
+        (setq last-depth next-depth)
+        ;; Compute how depth changes over this line
+        ;; plus enough other lines to get to one that
+        ;; does not end inside a comment or string.
+        ;; Meanwhile, do appropriate indentation on comment lines.
+        (setq inner-loop-done nil)
+        (while (and (not inner-loop-done)
+                    (not (and (eobp) (setq outer-loop-done t))))
+          (setq ostate state)
+          (setq state (parse-partial-sexp (point) (progn (end-of-line) (point))
+                                          nil nil state))
+          (setq next-depth (car state))
+          (if (and (car (cdr (cdr state)))
+                   (>= (car (cdr (cdr state))) 0))
+              (setq last-sexp (car (cdr (cdr state)))))
+          (if (or (nth 4 ostate))
+              (c-indent-line))
+          (if (or (nth 3 state))
+              (forward-line 1)
+            (setq inner-loop-done t)))
+        (and endpos
+             (while (< next-depth 0)
+               (setq indent-stack (append indent-stack (list nil)))
+               (setq contain-stack (append contain-stack (list nil)))
+               (setq next-depth (1+ next-depth))
+               (setq last-depth (1+ last-depth))
+               (setcar (nthcdr 6 state) (1+ (nth 6 state)))))
+        (setq outer-loop-done (and (not endpos) (<= next-depth 0)))
+        (if outer-loop-done
+            nil
+          ;; If this line had ..))) (((.. in it, pop out of the levels
+          ;; that ended anywhere in this line, even if the final depth
+          ;; doesn't indicate that they ended.
+          (while (> last-depth (nth 6 state))
+            (setq indent-stack (cdr indent-stack)
+                  contain-stack (cdr contain-stack)
+                  last-depth (1- last-depth)))
+          (if (/= last-depth next-depth)
+              (setq last-sexp nil))
+          ;; Add levels for any parens that were started in this line.
+          (while (< last-depth next-depth)
+            (setq indent-stack (cons nil indent-stack)
+                  contain-stack (cons nil contain-stack)
+                  last-depth (1+ last-depth)))
+          (if (null (car contain-stack))
+              (setcar contain-stack (or (car (cdr state))
+                                        (save-excursion (forward-sexp -1)
+                                                        (point)))))
+          (forward-line 1)
+          (skip-chars-forward " \t")
+          (if (eolp)
+              nil
+            (if (and (car indent-stack)
+                     (>= (car indent-stack) 0))
+                ;; Line is on an existing nesting level.
+                ;; Lines inside parens are handled specially.
+                (if (/= (char-after (car contain-stack)) ?{)
+                    (setq this-indent (car indent-stack))
+                  ;; Line is at statement level.
+                  ;; Is it a new statement?  Is it an else?
+                  ;; Find last non-comment character before this line
+                  (save-excursion
+                    (setq at-else (looking-at "else\\W"))
+                    (setq at-brace (= (following-char) ?{))
+                    (setq at-while (looking-at "while\\b"))
+                    (c-backward-to-noncomment opoint)
+                    (if (not (memq (preceding-char) '(nil ?\, ?\; ?} ?: ?{)))
+                        ;; Preceding line did not end in comma or semi;
+                        ;; indent this line  c-continued-statement-offset
+                        ;; more than previous.
+                        (progn
+                          (c-backward-to-start-of-continued-exp (car contain-stack))
+                          (setq this-indent
+                                (+ c-continued-statement-offset (current-column)
+                                   (if at-brace c-continued-brace-offset 0))))
+                      ;; Preceding line ended in comma or semi;
+                      ;; use the standard indent for this level.
+                      (cond (at-else (progn (c-backward-to-start-of-if opoint)
+                                            (setq this-indent
+                                                  (current-indentation))))
+                            ((and at-while (c-backward-to-start-of-do opoint))
+                             (setq this-indent (current-indentation)))
+                            (t (setq this-indent (car indent-stack)))))))
+              ;; Just started a new nesting level.
+              ;; Compute the standard indent for this level.
+              (let ((val (calculate-c-indent
+                           (if (car indent-stack)
+                               (- (car indent-stack))
+                             opoint))))
+                (setcar indent-stack
+                        (setq this-indent val))))
+            ;; Adjust line indentation according to its contents
+            (if (or (looking-at "case[ \t'/(]\\|default\\>")
+                    (and (looking-at "[A-Za-z]")
+                         (save-excursion
+                           (forward-sexp 1)
+                           (looking-at ":"))))
+                (setq this-indent (max 1 (+ this-indent c-label-offset))))
+            (if (= (following-char) ?})
+                (setq this-indent (- this-indent c-indent-level)))
+            (if (= (following-char) ?{)
+                (setq this-indent (+ this-indent c-brace-offset)))
+            ;; Don't leave indentation in empty lines.
+            (if (eolp) (setq this-indent 0))
+            ;; Put chosen indentation into effect.
+            (or (= (current-column) this-indent)
+                (= (following-char) ?\#)
+                (progn
+                  (delete-region (point) (progn (beginning-of-line) (point)))
+                  (indent-to this-indent)))
+            ;; Indent any comment following the text.
+            (or (looking-at comment-start-skip)
+                (let ((beg (point)))
+                  (and (re-search-forward
+                        comment-start-skip
+                        (save-excursion (end-of-line) (point)) t)
+                       ;; Make sure the comment starter we found
+                       ;; is not actually in a string or quoted.
+                       (let ((new-state
+                              (parse-partial-sexp beg (point)
+                                                  nil nil state)))
+                         (and (not (nth 3 new-state)) (not (nth 5 new-state))))
+                      (progn (indent-for-comment) (beginning-of-line)))))))))))
+
+;; Look at all comment-start strings in the current line after point.
+;; Return t if one of them starts a real comment.
+;; This is not used yet, because indent-for-comment
+;; isn't smart enough to handle the cases this can find.
+(defun indent-c-find-real-comment ()
+  (let (win)
+    (while (and (not win)
+                (re-search-forward comment-start-skip
+                                   (save-excursion (end-of-line) (point))
+                                   t))
+      ;; Make sure the comment start is not quoted.
+      (let ((state-1
+             (parse-partial-sexp
+              (save-excursion (beginning-of-line) (point))
+              (point) nil nil state)))
+        (setq win (and (null (nth 3 state-1)) (null (nth 5 state-1))))))
+    win))
+
+;; Indent every line whose first char is between START and END inclusive.
+(defun c-indent-region (start end)
+  (save-excursion
+    (goto-char start)
+    (let ((endmark (copy-marker end)))
+      (and (bolp) (not (eolp))
+           (c-indent-line))
+      (indent-c-exp endmark)
+      (set-marker endmark nil))))
+
+(defun set-c-style (style)
+  "Set C-mode variables to use one of several different indentation styles.
+Takes one argument, a string representing the desired style.
+Available styles are GNU, K&R, BSD and Whitesmith."
+  (interactive (list (completing-read "Use which C indentation style? "
+                                      c-style-alist nil t)))
+  (let ((vars (cdr (assoc style c-style-alist))))
+    (if vars
+        (if (interactive-p) (message "Using %s C indentation style" style))
+      (error "Bogus style type, \"%s\"" style))
+    (while vars
+      (set (car (car vars)) (cdr (car vars)))
+      (setq vars (cdr vars)))))