Commit 9c5b896b authored by Dave Love's avatar Dave Love
Browse files

Deleted. (Requires removed c-mode.el.)

parent 42d03dd0
;;; cplus-md.el --- old C++ code editing mode for Emacs
;; Copyright (C) 1985, 1992, 1994, 1995 Free Software Foundation, Inc.
;; Maintainer: FSF
;; Keywords: c
;; 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 2, 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, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
;;; Commentary:
;; 1987 Dave Detlefs <dld@cs.cmu.edu>
;; and Stewart Clamen <clamen@cs.cmu.edu>.
;; Done by fairly faithful modification of:
;;; Change Log:
;; Feb, 1990 (Dave Detlefs, dld@cs.cmu.edu)
;; Fixed electric-c++-terminator to handle double colons, at the
;; request of John Hagerman.
;;
;; Jan, 1990 (Doug Lea, dl@oswego.edu)
;; Replaced c++-comment-region and c++-uncomment-region with
;; versions from Igor Metz that avoid potential infinite loops.
;;
;; Oct, 1989 (Dave Detlefs, dld@cs.cmu.edu)
;; Added contribution from Igor Metz <metz@iam.unibe.ch>:
;; functions c++-comment-region and c++-uncomment-region and
;; corresponding key-binding.
;; Also fixed bug in indentation of second line after an empty
;; arglist with empty-arglist non-null.
;;
;; Sept, 1989 (Glen Ditchfield, gjditchfield@violet.uwaterloo.ca):
;; Textual changes to more closely imitate Emacs 18.55's c-mode.
;; Fixed handling of "default:", where ":" was the last character in the
;; buffer. Fixed indentation of comments starting in column 0, and when
;; previous line contained more than one comment start string. Fixed
;; handling of "friend".
;;
;; Aug 7, 1989; John Hagerman (hagerman@ece.cmu.edu):
;; Changed calculate-c++-indent to handle member initializations
;; more flexibly. Two new variables are used to control behavior:
;; c++-member-init-indent and c++-continued-member-init-offset.
;; Note the assumption that member initializations and argument
;; declarations are not mixed in one function definition.
;;
;; June 1989 (Dave Detlefs, dld@cs.cmu.edu)
;; Fixed calculate-c++-indent to handle continued lines ending in
;; {'s. (I wasn't following C-mode closely enough, or C-mode
;; changed.) Made ' a quote character, at the behest of someone
;; whose mail I apparently deleted (if they send me mail I'll credit
;; them here in a future revision.)
;; Dan Weinreb (dlw@odi.com) pointed out that 'c++-mode successively
;; bound c++-indent-exp and c++-indent-defun to ESC-^q. ESC-^q is
;; now bound to c++-indent-exp, while, c++-indent-defun is invoked
;; with ESC-^x.
;; February 1989 (Dave Detlefs, dld@cs.cmu.edu)
;; Fixed some errors in c++-indent-defun, as pointed out by Sam
;; Haradhvala (odi!sam@talcott.harvard.edu).
;; October 1988 (Dave Detlefs, dld@cs.cmu.edu)
;; It turns out I had only *thought* I had made
;; beginning(end)-of-defun work. It should work better now -- you
;; can either attempt to match defun headers "strongly," using a
;; very complicated regexp, or "weakly," using a simple one. This
;; is settable by a variable; the default is the cheaper weak
;; method. (Stewart Clamen was intimately involved in this, too.)
;;
;; I made "'" *not* be a string delimiter, because that was causing
;; comments containing contractions to ("// don't") to mess up paren
;; balancing.
;;
;; I also incorporated another slight indentation fix from Glen
;; Ditchfield.
;;
;; We hope this is will make into version 19 of gnu-emacs.
;;
;; September 1988: incorporated changes from Fred Calm at Schlumberger.
;; Also, made beginning(end)-of-defun, indent-defun work.
;;
;; August 1987: incorporated changes done by Glen Ditchfield of Waterloo.
;;; Code:
(defgroup old-c++ nil
"Old C++ code editing mode for Emacs."
;; This group should have no parent.
;; We don't want it to be loaded except on explicit request.
:prefix "c-")
(defvar c++-mode-abbrev-table nil
"Abbrev table used 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 "\C-j" 'reindent-then-newline-and-indent)
(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 "\e\C-h" 'mark-c-function)
(define-key c++-mode-map "\e\C-q" 'indent-c++-exp)
(define-key c++-mode-map "\177" 'backward-delete-char-untabify)
(define-key c++-mode-map "\t" 'c++-indent-command)
;; (define-key c++-mode-map "\C-c\C-i" 'c++-insert-header)
(define-key c++-mode-map "\C-c\C-\\" 'c-backslash-region))
;; (define-key c++-mode-map "\e\C-a" 'c++-beginning-of-defun)
;; (define-key c++-mode-map "\e\C-e" 'c++-end-of-defun)
;; (define-key c++-mode-map "\e\C-x" 'c++-indent-defun))
(defvar c++-mode-syntax-table nil
"Syntax table used in C++ mode.")
(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)
(modify-syntax-entry ?* ". 23b" c++-mode-syntax-table)
(modify-syntax-entry ?/ ". 124" c++-mode-syntax-table)
(modify-syntax-entry ?\n ">" c++-mode-syntax-table)
(modify-syntax-entry ?\^m ">" c++-mode-syntax-table))
(defcustom c++-continued-member-init-offset nil
"*Extra indent for continuation lines of member inits;
nil means to align with previous initializations rather than
with the colon on the first line."
:type '(choice (const nil) integer)
:group 'old-c++)
(defcustom c++-member-init-indent 0
"*Indentation level of member initializations in function declarations."
:type 'integer
:group 'old-c++)
(defcustom c++-friend-offset -4
"*Offset of C++ friend declarations relative to member declarations."
:type 'integer
:group 'old-c++)
(defcustom c++-electric-colon t
"*If t, colon is an electric terminator."
:type 'boolean
:group 'old-c++)
(defcustom c++-empty-arglist-indent nil
"*Indicates how far to indent a line following an empty argument
list. nil indicates to just after the paren."
:type '(choice (const nil) integer)
:group 'old-c++)
(defvar c++-imenu-generic-expression
`((nil
,(concat
"^" ; beginning of line is required
"\\(template[ \t]*<[^>]+>[ \t]*\\)?" ; there may be a "template <...>"
"\\([a-zA-Z0-9_:]+[ \t]+\\)?" ; type specs; there can be no
"\\([a-zA-Z0-9_:]+[ \t]+\\)?" ; more than 3 tokens, right?
"\\(" ; last type spec including */&
"[a-zA-Z0-9_:]+"
"\\([ \t]*[*&]+[ \t]*\\|[ \t]+\\)" ; either pointer/ref sign or whitespace
"\\)?" ; if there is a last type spec
"\\(" ; name; take that into the imenu entry
"[a-zA-Z0-9_:~]+" ; member function, ctor or dtor...
; (may not contain * because then
; "a::operator char*" would become "char*"!)
"\\|"
"\\([a-zA-Z0-9_:~]*::\\)?operator"
"[^a-zA-Z1-9_][^(]*" ; ...or operator
" \\)"
"[ \t]*([^)]*)[ \t\n]*[^ ;]" ; require something other than a ; after
; the (...) to avoid prototypes. Can't
; catch cases with () inside the parentheses
; surrounding the parameters
; (like "int foo(int a=bar()) {...}"
) 6)
("Class"
,(concat
"^" ; beginning of line is required
"\\(template[ \t]*<[^>]+>[ \t]*\\)?" ; there may be a "template <...>"
"class[ \t]+"
"\\([a-zA-Z0-9_]+\\)" ; this is the string we want to get
"[ \t]*[:{]"
) 2)
;; Example of generic expression for finding prototypes, structs, unions, enums.
;; Uncomment if you want to find these too. It will be a bit slower gathering
;; the indexes.
;;; ("Prototypes"
;;; (,
;;; (concat
;;; "^" ; beginning of line is required
;;; "\\(template[ \t]*<[^>]+>[ \t]*\\)?" ; there may be a "template <...>"
;;; "\\([a-zA-Z0-9_:]+[ \t]+\\)?" ; type specs; there can be no
;;; "\\([a-zA-Z0-9_:]+[ \t]+\\)?" ; more than 3 tokens, right?
;;; "\\(" ; last type spec including */&
;;; "[a-zA-Z0-9_:]+"
;;; "\\([ \t]*[*&]+[ \t]*\\|[ \t]+\\)" ; either pointer/ref sign or whitespace
;;; "\\)?" ; if there is a last type spec
;;; "\\(" ; name; take that into the imenu entry
;;; "[a-zA-Z0-9_:~]+" ; member function, ctor or dtor...
;;; ; (may not contain * because then
;;; ; "a::operator char*" would become "char*"!)
;;; "\\|"
;;; "\\([a-zA-Z0-9_:~]*::\\)?operator"
;;; "[^a-zA-Z1-9_][^(]*" ; ...or operator
;;; " \\)"
;;; "[ \t]*([^)]*)[ \t\n]*;" ; require ';' after
;;; ; the (...) Can't
;;; ; catch cases with () inside the parentheses
;;; ; surrounding the parameters
;;; ; (like "int foo(int a=bar());"
;;; )) 6)
;;; ("Struct"
;;; (, (concat
;;; "^" ; beginning of line is required
;;; "\\(static[ \t]+\\)?" ; there may be static or const.
;;; "\\(const[ \t]+\\)?"
;;; "struct[ \t]+"
;;; "\\([a-zA-Z0-9_]+\\)" ; this is the string we want to get
;;; "[ \t]*[{]"
;;; )) 3)
;;; ("Enum"
;;; (, (concat
;;; "^" ; beginning of line is required
;;; "\\(static[ \t]+\\)?" ; there may be static or const.
;;; "\\(const[ \t]+\\)?"
;;; "enum[ \t]+"
;;; "\\([a-zA-Z0-9_]+\\)" ; this is the string we want to get
;;; "[ \t]*[{]"
;;; )) 3)
;;; ("Union"
;;; (, (concat
;;; "^" ; beginning of line is required
;;; "\\(static[ \t]+\\)?" ; there may be static or const.
;;; "\\(const[ \t]+\\)?"
;;; "union[ \t]+"
;;; "\\([a-zA-Z0-9_]+\\)" ; this is the string we want to get
;;; "[ \t]*[{]"
;;; )) 3)
)
"Imenu generic expression for C++ mode. See `imenu-generic-expression'.")
(defun c++-mode ()
"Major mode for editing C++ code. Very much like editing C code.
Expression and list commands understand all C++ brackets.
Tab at left margin indents for C++ code
Comments are delimited with /* ... */ {or with // ... <newline>}
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.
Default is t.
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:'', or
``public:'' or ``private:'', or ``protected:''.
c++-electric-colon
If non-nil at invocation of c++-mode (t is the default) colon electrically
indents.
c++-empty-arglist-indent
If non-nil, a function declaration or invocation which ends a line with a
left paren is indented this many extra spaces, instead of flush with the
left paren.
c++-friend-offset
Offset of C++ friend declarations relative to member declarations.
c++-member-init-indent
Indentation level of member initializations in function declarations,
if they are on a separate line beginning with a colon.
c++-continued-member-init-offset
Extra indentation for continuation lines of member initializations; nil
means to align with previous initializations rather than with the colon.
Settings for K&R, BSD, and Stroustrup indentation styles are
c-indent-level 5 8 4
c-continued-statement-offset 5 8 4
c-continued-brace-offset 0
c-brace-offset -5 -8 0
c-brace-imaginary-offset 0
c-argdecl-indent 0 8 4
c-label-offset -5 -8 -4
c++-empty-arglist-indent 4
c++-friend-offset 0
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)
;; This code depends on the old C mode.
(require 'c-mode)
(use-local-map c++-mode-map)
(set-syntax-table c++-mode-syntax-table)
(setq major-mode 'c++-mode
mode-name "C++"
comment-column 32
local-abbrev-table c++-mode-abbrev-table)
(set (make-local-variable 'indent-line-function) 'c++-indent-line)
(set (make-local-variable 'comment-start) "// ")
(set (make-local-variable 'comment-end) "")
(set (make-local-variable 'comment-start-skip) "/\\*+ *\\|// *")
(set (make-local-variable 'comment-indent-function) 'c++-comment-indent)
(set (make-local-variable 'paragraph-start) (concat "$\\|" page-delimiter))
(set (make-local-variable 'paragraph-separate) paragraph-start)
(set (make-local-variable 'paragraph-ignore-fill-prefix) t)
(set (make-local-variable 'require-final-newline) t)
(set (make-local-variable 'parse-sexp-ignore-comments) t)
(make-local-variable 'imenu-generic-expression)
(setq imenu-generic-expression c++-imenu-generic-expression)
(setq imenu-case-fold-search nil)
(run-hooks 'c++-mode-hook)
(if c++-electric-colon
(define-key c++-mode-map ":" 'electric-c++-terminator)))
;; 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.
(save-excursion
(skip-chars-backward " \t")
(max
;; Leave at least one space on non-empty lines.
(if (zerop (current-column)) 0 (1+ (current-column)))
(let ((cur-pt (point)))
(beginning-of-line 0)
;; If previous line had a comment, use its indentation.
(if (re-search-forward comment-start-skip cur-pt t)
(progn
(goto-char (match-beginning 0))
(current-column))
comment-column)))))) ; otherwise indent at comment column.
(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))))
(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++-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, or another colon.
;; So quickly rule out most other uses of colon
;; and do no indentation for them.
(and (eq last-command-char ?:)
(or (not (or (looking-at "case[ \t]")
(save-excursion
(forward-word 1)
(skip-chars-forward " \t")
(>= (point) end))))
;; Do re-indent double colons
(save-excursion
(end-of-line 1)
(looking-at ":"))))
(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
;; the new marker object, used to be just an integer
(setq insertpos (make-marker))
;; changed setq to set-marker
(set-marker insertpos (1- (point)))
;; do this before the newline, since in auto fill can break
(newline)
(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++-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 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))
(setq beg (point))
(forward-sexp 1)
(setq end (point))
(goto-char beg)
(forward-line 1)
(setq beg (point)))
(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 ((looking-at "\\(default\\|public\\|private\\|protected\\):")
(setq indent (+ indent c-label-offset)))
((or (looking-at "case\\b")
(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 "friend\[ \t]")
(setq indent (+ indent c++-friend-offset)))
((= (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 or member initialization.
;; Indent like the previous top level line unless
;; (1) the previous line ends in a closeparen without semicolon,
;; in which case this line is the first argument declaration or
;; member initialization, or
;; (2) the previous line begins with a colon,
;; in which case this is the second line of member inits.
;; It is assumed that arg decls and member inits are not mixed.
(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)))
(if (= (preceding-char) ?\))
(progn ; first arg decl or member init
(goto-char indent-point)
(skip-chars-forward " \t")
(if (= (following-char) ?:)
c++-member-init-indent
c-argdecl-indent))
(if (= (preceding-char) ?\;)
(backward-char 1))
(if (= (preceding-char) ?\})
0
(if (= (preceding-char) ?\))
(forward-list -1))
(beginning-of-line) ; continued arg decls or member inits
(skip-chars-forward " \t")
(if (= (following-char) ?:)
(if c++-continued-member-init-offset
(+ (current-indentation)
c++-continued-member-init-offset)
(progn
(forward-char 1)
(skip-chars-forward " \t")
(current-column)))
(current-indentation)))
)))
((/= (char-after containing-sexp) ?\{)
;; line is expression, not statement:
;; indent to just after the surrounding open -- unless
;; empty arg list, in which case we do what
;; c++-empty-arglist-indent says to do.
(if (and c++-empty-arglist-indent
(or (null (nth 2 state)) ;; indicates empty arg
;; list.
;; Use a heuristic: if the first
;; non-whitespace following left paren on
;; same line is not a comment,
;; is not an empty arglist.
(save-excursion
(goto-char (1+ containing-sexp))
(not
(looking-at "\\( \\|\t\\)*[^/\n]")))))
(progn
(goto-char containing-sexp)
(beginning-of-line)
(skip-chars-forward " \t")
(goto-char (min (+ (point) c++-empty-arglist-indent)
(1+ containing-sexp)))
(current-column))
;; In C-mode, we would always indent to one after the
;; left paren. Here, though, we may have an
;; empty-arglist, so we'll indent to the min of that
;; and the beginning of the first argument.
(goto-char (1+ containing-sexp))
(current-column)))
(t
;; Statement. Find previous non-comment character.