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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 buffers.")
- (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-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 "\177" 'backward-delete-char-untabify)
- (define-key c-mode-map "\t" 'c-indent-command))
-
- (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-auto-newline nil
- "*Non-nil means automatically newline before and after braces,
- and after colons and semicolons, inserted in C code.")
-
- (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 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 '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.
- (save-excursion
- (skip-chars-backward " \t")
- (max (1+ (current-column)) ;Else indent at comment column
- comment-column)))) ; except leave at least one space.
-
- (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-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]"))
- (save-excursion
- (forward-word 1)
- (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)
- (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))
- (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 ((or (looking-at "case[ \t]")
- (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))))
- ((= (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 accordinglu.
- (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)
- (and (< (point) indent-point)
- (not (memq (following-char)
- '(?\, ?\;))))))
- c-argdecl-indent 0))))
- ;; Now add a little if this is a continuation line.
- (+ basic-indent (if (or (bobp)
- (memq (preceding-char) '(?\) ?\; ?\})))
- 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) ?\,)
- (c-backward-to-start-of-continued-exp containing-sexp))
- (beginning-of-line)
- (c-backward-to-noncomment containing-sexp))
- ;; Now we get the answer.
- (if (not (memq (preceding-char) '(nil ?\, ?\; ?\} ?\{)))
- ;; 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 (= (following-char) ?\{) c-brace-offset 0)))))
- ;; 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 ()
- "Return the indentation amount for line, assuming that
- the current line is to be regarded as part of a block comment."
- (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")
- (and (re-search-forward "/\\*[ \t]*" end t)
- star-start
- (goto-char (1+ (match-beginning 0))))
- (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 (= (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 (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 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 ()
- "Indent each line of the C grouping following point."
- (interactive)
- (let ((indent-stack (list nil))
- (contain-stack (list (point)))
- (case-fold-search nil)
- restart outer-loop-done inner-loop-done state ostate
- this-indent last-sexp
- at-else at-brace
- (opoint (point))
- (next-depth 0))
- (save-excursion
- (forward-sexp 1))
- (save-excursion
- (setq outer-loop-done nil)
- (while (and (not (eobp)) (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)))
- (if (<= next-depth 0)
- (setq outer-loop-done t))
- (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) ?{))
- (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.
- (if at-else
- (progn (c-backward-to-start-of-if opoint)
- (setq this-indent (current-indentation)))
- (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))))))
- (setcar indent-stack
- (setq this-indent val))))
- ;; Adjust line indentation according to its contents
- (if (or (looking-at "case[ \t]")
- (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)))
- ;; 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)
- (if (re-search-forward comment-start-skip (save-excursion (end-of-line) (point)) t)
- (progn (indent-for-comment) (beginning-of-line)))))))))
- ; (message "Indenting C expression...done")
- )
-