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- ;;; lisp-mode.el --- Lisp mode, and its idiosyncratic commands.
-
- ;; Copyright (C) 1985, 1996 Free Software Foundation, Inc.
- ;; Copyright (C) 1995 Tinker Systems
-
- ;; Maintainer: FSF
- ;; Keywords: lisp, languages
-
- ;; This file is part of XEmacs.
-
- ;; XEmacs 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.
-
- ;; XEmacs 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 XEmacs; see the file COPYING. If not, write to the Free
- ;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- ;; 02111-1307, USA.
-
- ;;; Synched up with: FSF 19.34 (but starting to diverge).
-
- ;;; Commentary:
-
- ;; The base major mode for editing Lisp code (used also for Emacs Lisp).
- ;; This mode is documented in the Emacs manual
-
- ;; July/05/97 slb Converted to use easymenu.
-
- ;;; Code:
-
- (defvar lisp-mode-syntax-table nil "")
- (defvar emacs-lisp-mode-syntax-table nil "")
- (defvar lisp-mode-abbrev-table nil "")
-
- ;; XEmacs change
- (defvar lisp-interaction-mode-popup-menu nil)
- (defvar lisp-interaction-mode-popup-menu-1
- (purecopy '("Lisp-Interaction"
- ["Evaluate Last S-expression" eval-last-sexp t]
- ["Evaluate Entire Buffer" eval-current-buffer t]
- ["Evaluate Region" eval-region (region-exists-p)]
- "---"
- ["Evaluate This Defun" eval-defun t]
- ;; FSF says "Instrument Function for Debugging"
- ["Debug This Defun" edebug-defun t]
- "---"
- ["Trace a Function" trace-function-background t]
- ["Untrace All Functions" untrace-all (fboundp 'untrace-all)]
- "---"
- ["Comment Out Region" comment-region (region-exists-p)]
- ["Indent Region" indent-region (region-exists-p)]
- ["Indent Line" lisp-indent-line t]
- "---"
- ["Debug On Error" (setq debug-on-error (not debug-on-error))
- :style toggle :selected debug-on-error]
- ["Debug On Quit" (setq debug-on-quit (not debug-on-quit))
- :style toggle :selected debug-on-quit]
- ["Debug on Signal" (setq debug-on-signal (not debug-on-signal))
- :style toggle :selected debug-on-signal]
- )))
-
- (defvar emacs-lisp-mode-popup-menu nil)
- (defvar emacs-lisp-mode-popup-menu-1
- (purecopy
- (nconc
- '("Emacs-Lisp"
- ["Byte-compile This File" emacs-lisp-byte-compile t]
- ["Byte-recompile Directory..." byte-recompile-directory t]
- "---")
- (cdr lisp-interaction-mode-popup-menu-1))))
-
- ;Don't have a menubar entry in Lisp Interaction mode. Otherwise, the
- ;*scratch* buffer has a Lisp menubar item! Very confusing.
- ;(defvar lisp-interaction-mode-menubar-menu
- ; (purecopy (cons "Lisp" (cdr lisp-interaction-mode-popup-menu))))
-
- (defvar emacs-lisp-mode-menubar-menu nil)
- (defvar emacs-lisp-mode-menubar-menu-1
- (purecopy (cons "Lisp" (cdr emacs-lisp-mode-popup-menu-1))))
-
- (if (not emacs-lisp-mode-syntax-table)
- (let ((i 0))
- (setq emacs-lisp-mode-syntax-table (make-syntax-table))
- (while (< i ?0)
- (modify-syntax-entry i "_ " emacs-lisp-mode-syntax-table)
- (setq i (1+ i)))
- (setq i (1+ ?9))
- (while (< i ?A)
- (modify-syntax-entry i "_ " emacs-lisp-mode-syntax-table)
- (setq i (1+ i)))
- (setq i (1+ ?Z))
- (while (< i ?a)
- (modify-syntax-entry i "_ " emacs-lisp-mode-syntax-table)
- (setq i (1+ i)))
- (setq i (1+ ?z))
- (while (< i 128)
- (modify-syntax-entry i "_ " emacs-lisp-mode-syntax-table)
- (setq i (1+ i)))
- (modify-syntax-entry ? " " emacs-lisp-mode-syntax-table)
- (modify-syntax-entry ?\t " " emacs-lisp-mode-syntax-table)
- (modify-syntax-entry ?\n "> " emacs-lisp-mode-syntax-table)
- ;; Give CR the same syntax as newline, for selective-display.
- (modify-syntax-entry ?\^m "> " emacs-lisp-mode-syntax-table)
- ;; XEmacs change
- ;; Treat ^L as whitespace.
- (modify-syntax-entry ?\f " " emacs-lisp-mode-syntax-table)
- (modify-syntax-entry ?\; "< " emacs-lisp-mode-syntax-table)
- (modify-syntax-entry ?` "' " emacs-lisp-mode-syntax-table)
- (modify-syntax-entry ?' "' " emacs-lisp-mode-syntax-table)
- (modify-syntax-entry ?, "' " emacs-lisp-mode-syntax-table)
- ;; Used to be singlequote; changed for flonums.
- (modify-syntax-entry ?. "_ " emacs-lisp-mode-syntax-table)
- (modify-syntax-entry ?# "' " emacs-lisp-mode-syntax-table)
- (modify-syntax-entry ?\" "\" " emacs-lisp-mode-syntax-table)
- (modify-syntax-entry ?\\ "\\ " emacs-lisp-mode-syntax-table)
- (modify-syntax-entry ?\( "() " emacs-lisp-mode-syntax-table)
- (modify-syntax-entry ?\) ")( " emacs-lisp-mode-syntax-table)
- (modify-syntax-entry ?\[ "(] " emacs-lisp-mode-syntax-table)
- (modify-syntax-entry ?\] ")[ " emacs-lisp-mode-syntax-table)))
-
- (if (not lisp-mode-syntax-table)
- (progn (setq lisp-mode-syntax-table
- (copy-syntax-table emacs-lisp-mode-syntax-table))
- (modify-syntax-entry ?\| "\" " lisp-mode-syntax-table)
- (modify-syntax-entry ?\[ "_ " lisp-mode-syntax-table)
- ;; XEmacs changes
- (modify-syntax-entry ?\] "_ " lisp-mode-syntax-table)
- ;;
- ;; If emacs was compiled with NEW_SYNTAX, then do
- ;; CL's #| |# block comments.
- (if (= 8 (length (parse-partial-sexp (point) (point))))
- (progn
- (modify-syntax-entry ?# "' 58" lisp-mode-syntax-table)
- (modify-syntax-entry ?| ". 67" lisp-mode-syntax-table))
- ;; else, old style
- (modify-syntax-entry ?\| "\" " lisp-mode-syntax-table))))
-
- (define-abbrev-table 'lisp-mode-abbrev-table ())
-
- ;(defvar lisp-imenu-generic-expression
- ; '(
- ; (nil
- ; "^\\s-*(def\\(un\\|subst\\|macro\\|advice\\)\\s-+\\([-A-Za-z0-9+]+\\)" 2)
- ; ("Variables"
- ; "^\\s-*(def\\(var\\|const\\)\\s-+\\([-A-Za-z0-9+]+\\)" 2)
- ; ("Types"
- ; "^\\s-*(def\\(type\\|struct\\|class\\|ine-condition\\)\\s-+\\([-A-Za-z0-9+]+\\)"
- ; 2))
- ;
- ; "Imenu generic expression for Lisp mode. See `imenu-generic-expression'.")
-
- (defun lisp-mode-variables (lisp-syntax)
- (cond (lisp-syntax
- (set-syntax-table lisp-mode-syntax-table)))
- (setq local-abbrev-table lisp-mode-abbrev-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 'fill-paragraph-function)
- (setq fill-paragraph-function 'lisp-fill-paragraph)
- ;; Adaptive fill mode gets in the way of auto-fill,
- ;; and should make no difference for explicit fill
- ;; because lisp-fill-paragraph should do the job.
- (make-local-variable 'adaptive-fill-mode)
- (setq adaptive-fill-mode nil)
- (make-local-variable 'indent-line-function)
- (setq indent-line-function 'lisp-indent-line)
- (make-local-variable 'indent-region-function)
- (setq indent-region-function 'lisp-indent-region)
- (make-local-variable 'parse-sexp-ignore-comments)
- (setq parse-sexp-ignore-comments t)
- (make-local-variable 'outline-regexp)
- (setq outline-regexp ";;; \\|(....")
- (make-local-variable 'comment-start)
- (setq comment-start ";")
- ;; XEmacs change
- (set (make-local-variable 'block-comment-start) ";;")
- (make-local-variable 'comment-start-skip)
- ;; Look within the line for a ; following an even number of backslashes
- ;; after either a non-backslash or the line beginning.
- (setq comment-start-skip "\\(\\(^\\|[^\\\\\n]\\)\\(\\\\\\\\\\)*\\);+ *")
- (make-local-variable 'comment-column)
- (setq comment-column 40)
- (make-local-variable 'comment-indent-function)
- (setq comment-indent-function 'lisp-comment-indent)
- ;; XEmacs changes
- ; (make-local-variable 'imenu-generic-expression)
- ; (setq imenu-generic-expression lisp-imenu-generic-expression)
- (set (make-local-variable 'dabbrev-case-fold-search) nil)
- (set (make-local-variable 'dabbrev-case-replace) nil)
- )
-
-
- (defvar shared-lisp-mode-map ()
- "Keymap for commands shared by all sorts of Lisp modes.")
-
- (if shared-lisp-mode-map
- ()
- (setq shared-lisp-mode-map (make-sparse-keymap))
- ;; XEmacs changes
- (set-keymap-name shared-lisp-mode-map 'shared-lisp-mode-map)
- (define-key shared-lisp-mode-map "\M-;" 'lisp-indent-for-comment)
- (define-key shared-lisp-mode-map "\e\C-q" 'indent-sexp))
-
- (defvar emacs-lisp-mode-map ()
- "Keymap for Emacs Lisp mode.
- All commands in `shared-lisp-mode-map' are inherited by this map.")
-
- (if emacs-lisp-mode-map
- ()
- ;; XEmacs: Ignore FSF nconc stuff
- (setq emacs-lisp-mode-map (make-sparse-keymap))
- (set-keymap-name emacs-lisp-mode-map 'emacs-lisp-mode-map)
- (set-keymap-parents emacs-lisp-mode-map (list shared-lisp-mode-map))
- (define-key emacs-lisp-mode-map "\e\t" 'lisp-complete-symbol)
- (define-key emacs-lisp-mode-map "\e\C-x" 'eval-defun)
- ;; XEmacs: Not sure what the FSF menu bindings are. I hope XEmacs
- ;; doesn't need them.
- )
-
- (defun emacs-lisp-byte-compile ()
- "Byte compile the file containing the current buffer."
- (interactive)
- (if buffer-file-name
- ;; XEmacs change. Force buffer save first
- (progn
- (save-buffer)
- (byte-compile-file buffer-file-name))
- (error "The buffer must be saved in a file first.")))
-
- (defun emacs-lisp-byte-compile-and-load ()
- "Byte-compile the current file (if it has changed), then load compiled code."
- (interactive)
- (or buffer-file-name
- (error "The buffer must be saved in a file first"))
- (require 'bytecomp)
- ;; Recompile if file or buffer has changed since last compilation.
- (if (and (buffer-modified-p)
- (y-or-n-p (format "save buffer %s first? " (buffer-name))))
- (save-buffer))
- (let ((compiled-file-name (byte-compile-dest-file buffer-file-name)))
- (if (file-newer-than-file-p compiled-file-name buffer-file-name)
- (load-file compiled-file-name)
- (byte-compile-file buffer-file-name t))))
-
- (defun emacs-lisp-mode ()
- "Major mode for editing Lisp code to run in Emacs.
- Commands:
- Delete converts tabs to spaces as it moves back.
- Blank lines separate paragraphs. Semicolons start comments.
- \\{emacs-lisp-mode-map}
- Entry to this mode calls the value of `emacs-lisp-mode-hook'
- if that value is non-nil."
- (interactive)
- (kill-all-local-variables)
- (use-local-map emacs-lisp-mode-map)
- (set-syntax-table emacs-lisp-mode-syntax-table)
- ;; XEmacs changes
- (setq major-mode 'emacs-lisp-mode
- ;; mode-popup-menu emacs-lisp-mode-popup-menu
- mode-name "Emacs-Lisp")
- ;; (if (and (featurep 'menubar)
- ;; current-menubar)
- ;; (progn
- ;; make a local copy of the menubar, so our modes don't
- ;; change the global menubar
- ;; (set-buffer-menubar current-menubar)
- ;; (add-submenu nil emacs-lisp-mode-menubar-menu)))
- (unless emacs-lisp-mode-popup-menu
- (easy-menu-define emacs-lisp-mode-popup-menu emacs-lisp-mode-map ""
- emacs-lisp-mode-popup-menu-1))
- (easy-menu-add emacs-lisp-mode-popup-menu)
- (lisp-mode-variables nil)
- (run-hooks 'emacs-lisp-mode-hook))
-
- (defvar lisp-mode-map ()
- "Keymap for ordinary Lisp mode.
- All commands in `shared-lisp-mode-map' are inherited by this map.")
-
- (if lisp-mode-map
- ()
- ;; XEmacs changes
- (setq lisp-mode-map (make-sparse-keymap))
- (set-keymap-name lisp-mode-map 'lisp-mode-map)
- (set-keymap-parents lisp-mode-map (list shared-lisp-mode-map))
- (define-key lisp-mode-map "\e\C-x" 'lisp-send-defun)
- ;; gag, no. use ilisp. -jwz
- ;; (define-key lisp-mode-map "\C-c\C-z" 'run-lisp)
- )
-
- (defun lisp-mode ()
- "Major mode for editing Lisp code for Lisps other than GNU Emacs Lisp.
- Commands:
- Delete converts tabs to spaces as it moves back.
- Blank lines separate paragraphs. Semicolons start comments.
- \\{lisp-mode-map}
- Note that `run-lisp' may be used either to start an inferior Lisp job
- or to switch back to an existing one.
-
- Entry to this mode calls the value of `lisp-mode-hook'
- if that value is non-nil."
- (interactive)
- (kill-all-local-variables)
- (use-local-map lisp-mode-map)
- (setq major-mode 'lisp-mode)
- (setq mode-name "Lisp")
- (lisp-mode-variables t)
- (set-syntax-table lisp-mode-syntax-table)
- (run-hooks 'lisp-mode-hook))
-
- ;; This will do unless shell.el is loaded.
- ;; XEmacs change
- (defun lisp-send-defun ()
- "Send the current defun to the Lisp process made by \\[run-lisp]."
- (interactive)
- (error "Process lisp does not exist"))
-
- ;; XEmacs change: emacs-lisp-mode-map is a more appropriate parent.
- (defvar lisp-interaction-mode-map ()
- "Keymap for Lisp Interaction mode.
- All commands in `shared-lisp-mode-map' are inherited by this map.")
-
- (if lisp-interaction-mode-map
- ()
- ;; XEmacs set keymap our way
- (setq lisp-interaction-mode-map (make-sparse-keymap))
- (set-keymap-name lisp-interaction-mode-map 'lisp-interaction-mode-map)
- (set-keymap-parents lisp-interaction-mode-map (list emacs-lisp-mode-map))
- (define-key lisp-interaction-mode-map "\e\C-x" 'eval-defun)
- (define-key lisp-interaction-mode-map "\e\t" 'lisp-complete-symbol)
- (define-key lisp-interaction-mode-map "\n" 'eval-print-last-sexp))
-
- (defun lisp-interaction-mode ()
- "Major mode for typing and evaluating Lisp forms.
- Like Lisp mode except that \\[eval-print-last-sexp] evals the Lisp expression
- before point, and prints its value into the buffer, advancing point.
-
- Commands:
- Delete converts tabs to spaces as it moves back.
- Paragraphs are separated only by blank lines.
- Semicolons start comments.
- \\{lisp-interaction-mode-map}
- Entry to this mode calls the value of `lisp-interaction-mode-hook'
- if that value is non-nil."
- (interactive)
- (kill-all-local-variables)
- (use-local-map lisp-interaction-mode-map)
- (setq major-mode 'lisp-interaction-mode)
- (setq mode-name "Lisp Interaction")
- ;; XEmacs change
- ;; (setq mode-popup-menu lisp-interaction-mode-popup-menu)
- (unless lisp-interaction-mode-popup-menu
- (easy-menu-define lisp-interaction-mode-popup-menu
- lisp-interaction-mode-map
- ""
- lisp-interaction-mode-popup-menu-1))
- (easy-menu-add lisp-interaction-mode-popup-menu)
-
- (set-syntax-table emacs-lisp-mode-syntax-table)
- (lisp-mode-variables nil)
- (run-hooks 'lisp-interaction-mode-hook))
-
- (defun eval-print-last-sexp ()
- "Evaluate sexp before point; print value into current buffer."
- (interactive)
- (let ((standard-output (current-buffer)))
- (terpri)
- (eval-last-sexp t)
- (terpri)))
-
- ;; XEmacs change
- (defcustom eval-interactive-verbose t
- "*Non-nil means that interactive evaluation can print messages.
- The messages are printed when the expression is treated differently
- using `\\[eval-last-sexp]' and `\\[eval-defun]' than it than it would have been
- treated noninteractively.
-
- The printed messages are \"defvar treated as defconst\" and \"defcustom
- evaluation forced\". See `eval-interactive' for more details."
- :type 'boolean
- :group 'lisp)
-
- (defun eval-interactive (expr)
- "Like `eval' except that it transforms defvars to defconsts.
- The evaluation of defcustom forms is forced."
- (cond ((and (consp expr)
- (eq (car expr) 'defvar)
- (> (length expr) 2))
- (eval (cons 'defconst (cdr expr)))
- (and eval-interactive-verbose
- (message "defvar treated as defconst"))
- (sit-for 1)
- (message "")
- (nth 1 expr))
- ((and (consp expr)
- (eq (car expr) 'defcustom)
- (> (length expr) 2)
- (default-boundp (nth 1 expr)))
- ;; Force variable to be bound
- (set-default (nth 1 expr) (eval (nth 2 expr)))
- ;; And evaluate the defcustom
- (eval expr)
- (and eval-interactive-verbose
- (message "defcustom evaluation forced"))
- (sit-for 1)
- (message "")
- (nth 1 expr))
- (t
- (eval expr))))
-
- ;; XEmacs change, based on Bob Weiner suggestion
- (defun eval-last-sexp (eval-last-sexp-arg-internal) ;dynamic scoping wonderment
- "Evaluate sexp before point; print value in minibuffer.
- With argument, print output into current buffer."
- (interactive "P")
- (let ((standard-output (if eval-last-sexp-arg-internal (current-buffer) t))
- (opoint (point)))
- (prin1 (let ((stab (syntax-table))
- expr)
- (eval-interactive
- (unwind-protect
- (save-excursion
- (set-syntax-table emacs-lisp-mode-syntax-table)
- (forward-sexp -1)
- (save-restriction
- (narrow-to-region (point-min) opoint)
- (setq expr (read (current-buffer)))
- (if (and (consp expr)
- (eq (car expr) 'interactive))
- (list 'quote
- (call-interactively
- (eval (` (lambda (&rest args)
- (, expr) args)))))
- expr)))
- (set-syntax-table stab)))))))
-
- (defun eval-defun (eval-defun-arg-internal)
- "Evaluate defun that point is in or before.
- Print value in minibuffer.
- With argument, insert value in current buffer after the defun."
- (interactive "P")
- (let ((standard-output (if eval-defun-arg-internal (current-buffer) t)))
- (prin1 (eval-interactive (save-excursion
- (end-of-defun)
- (beginning-of-defun)
- (read (current-buffer)))))))
-
-
- (defun lisp-comment-indent ()
- (if (looking-at "\\s<\\s<\\s<")
- (current-column)
- (if (looking-at "\\s<\\s<")
- (let ((tem (calculate-lisp-indent)))
- (if (listp tem) (car tem) tem))
- (skip-chars-backward " \t")
- (max (if (bolp) 0 (1+ (current-column)))
- comment-column))))
-
- ;; XEmacs change
- (defun lisp-indent-for-comment ()
- "Indent this line's comment appropriately, or insert an empty comment.
- If adding a new comment on a blank line, use `block-comment-start' instead
- of `comment-start' to open the comment."
- ;; by Stig@hackvan.com
- ;; #### - This functionality, the recognition of block-comment-{start,end},
- ;; will perhaps be standardized across modes and move to indent-for-comment.
- (interactive)
- (if (and block-comment-start
- (save-excursion (beginning-of-line) (looking-at "^[ \t]*$")))
- (insert block-comment-start))
- (indent-for-comment))
-
- (defconst lisp-indent-offset nil "")
- (defconst lisp-indent-function 'lisp-indent-function "")
-
- (defun lisp-indent-line (&optional whole-exp)
- "Indent current line as Lisp code.
- With argument, indent any additional lines of the same expression
- rigidly along with this one."
- (interactive "P")
- (let ((indent (calculate-lisp-indent)) shift-amt beg end
- (pos (- (point-max) (point))))
- (beginning-of-line)
- (setq beg (point))
- (skip-chars-forward " \t")
- (if (looking-at "\\s<\\s<\\s<")
- ;; Don't alter indentation of a ;;; comment line.
- (goto-char (- (point-max) pos))
- (if (and (looking-at "\\s<") (not (looking-at "\\s<\\s<")))
- ;; Single-semicolon comment lines should be indented
- ;; as comment lines, not as code.
- (progn (indent-for-comment) (forward-char -1))
- (if (listp indent) (setq indent (car indent)))
- (setq shift-amt (- indent (current-column)))
- (if (zerop shift-amt)
- nil
- (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)))
- ;; If desired, shift remaining lines of expression the same amount.
- (and whole-exp (not (zerop shift-amt))
- (save-excursion
- (goto-char beg)
- (forward-sexp 1)
- (setq end (point))
- (goto-char beg)
- (forward-line 1)
- (setq beg (point))
- (> end beg))
- (indent-code-rigidly beg end shift-amt)))))
-
- (defvar calculate-lisp-indent-last-sexp)
-
- (defun calculate-lisp-indent (&optional parse-start)
- "Return appropriate indentation for current line as Lisp code.
- In usual case returns an integer: the column to indent to.
- Can instead return a list, whose car is the column to indent to.
- This means that following lines at the same level of indentation
- should not necessarily be indented the same way.
- The second element of the list is the buffer position
- of the start of the containing expression."
- (save-excursion
- (beginning-of-line)
- (let ((indent-point (point))
- ;; XEmacs change (remove paren-depth)
- state ;;paren-depth
- ;; setting this to a number inhibits calling hook
- (desired-indent nil)
- (retry t)
- calculate-lisp-indent-last-sexp containing-sexp)
- (if parse-start
- (goto-char parse-start)
- (beginning-of-defun))
- ;; Find outermost containing sexp
- (while (< (point) indent-point)
- (setq state (parse-partial-sexp (point) indent-point 0)))
- ;; Find innermost containing sexp
- (while (and retry
- state
- ;; XEmacs change (remove paren-depth)
- (> ;;(setq paren-depth (elt state 0))
- (elt state 0)
- 0))
- (setq retry nil)
- (setq calculate-lisp-indent-last-sexp (elt state 2))
- (setq containing-sexp (elt state 1))
- ;; Position following last unclosed open.
- (goto-char (1+ containing-sexp))
- ;; Is there a complete sexp since then?
- (if (and calculate-lisp-indent-last-sexp
- (> calculate-lisp-indent-last-sexp (point)))
- ;; Yes, but is there a containing sexp after that?
- (let ((peek (parse-partial-sexp calculate-lisp-indent-last-sexp
- indent-point 0)))
- (if (setq retry (car (cdr peek))) (setq state peek)))))
- (if retry
- nil
- ;; Innermost containing sexp found
- (goto-char (1+ containing-sexp))
- (if (not calculate-lisp-indent-last-sexp)
- ;; indent-point immediately follows open paren.
- ;; Don't call hook.
- (setq desired-indent (current-column))
- ;; Find the start of first element of containing sexp.
- (parse-partial-sexp (point) calculate-lisp-indent-last-sexp 0 t)
- (cond ((looking-at "\\s(")
- ;; First element of containing sexp is a list.
- ;; Indent under that list.
- )
- ((> (save-excursion (forward-line 1) (point))
- calculate-lisp-indent-last-sexp)
- ;; This is the first line to start within the containing sexp.
- ;; It's almost certainly a function call.
- (if (= (point) calculate-lisp-indent-last-sexp)
- ;; Containing sexp has nothing before this line
- ;; except the first element. Indent under that element.
- nil
- ;; Skip the first element, find start of second (the first
- ;; argument of the function call) and indent under.
- (progn (forward-sexp 1)
- (parse-partial-sexp (point)
- calculate-lisp-indent-last-sexp
- 0 t)))
- (backward-prefix-chars))
- (t
- ;; Indent beneath first sexp on same line as
- ;; calculate-lisp-indent-last-sexp. Again, it's
- ;; almost certainly a function call.
- (goto-char calculate-lisp-indent-last-sexp)
- (beginning-of-line)
- (parse-partial-sexp (point) calculate-lisp-indent-last-sexp
- 0 t)
- (backward-prefix-chars)))))
- ;; Point is at the point to indent under unless we are inside a string.
- ;; Call indentation hook except when overridden by lisp-indent-offset
- ;; or if the desired indentation has already been computed.
- (let ((normal-indent (current-column)))
- (cond ((elt state 3)
- ;; Inside a string, don't change indentation.
- (goto-char indent-point)
- (skip-chars-forward " \t")
- (current-column))
- (desired-indent)
- ((and (boundp 'lisp-indent-function)
- lisp-indent-function
- (not retry))
- (or (funcall lisp-indent-function indent-point state)
- normal-indent))
- ;; XEmacs change:
- ;; lisp-indent-offset shouldn't override lisp-indent-function !
- ((and (integerp lisp-indent-offset) containing-sexp)
- ;; Indent by constant offset
- (goto-char containing-sexp)
- (+ normal-indent lisp-indent-offset))
- (t
- normal-indent))))))
-
- (defun lisp-indent-function (indent-point state)
- ;; free reference to `calculate-lisp-indent-last-sexp'
- ;; in #'calculate-lisp-indent
- (let ((normal-indent (current-column)))
- (goto-char (1+ (elt state 1)))
- (parse-partial-sexp (point) calculate-lisp-indent-last-sexp 0 t)
- (if (and (elt state 2)
- (not (looking-at "\\sw\\|\\s_")))
- ;; car of form doesn't seem to be a a symbol
- (progn
- (if (not (> (save-excursion (forward-line 1) (point))
- calculate-lisp-indent-last-sexp))
- (progn (goto-char calculate-lisp-indent-last-sexp)
- (beginning-of-line)
- (parse-partial-sexp (point)
- calculate-lisp-indent-last-sexp 0 t)))
- ;; Indent under the list or under the first sexp on the same
- ;; line as calculate-lisp-indent-last-sexp. Note that first
- ;; thing on that line has to be complete sexp since we are
- ;; inside the innermost containing sexp.
- (backward-prefix-chars)
- (current-column))
- (let ((function (buffer-substring (point)
- (progn (forward-sexp 1) (point))))
- method)
- (setq method (or (get (intern-soft function) 'lisp-indent-function)
- (get (intern-soft function) 'lisp-indent-hook)))
- (cond ((or (eq method 'defun)
- (and (null method)
- (> (length function) 3)
- (string-match "\\`def" function)))
- (lisp-indent-defform state indent-point))
- ((integerp method)
- (lisp-indent-specform method state
- indent-point normal-indent))
- (method
- (funcall method state indent-point)))))))
-
- (defconst lisp-body-indent 2
- "Number of columns to indent the second line of a `(def...)' form.")
-
- (defun lisp-indent-specform (count state indent-point normal-indent)
- (let ((containing-form-start (elt state 1))
- (i count)
- body-indent containing-form-column)
- ;; Move to the start of containing form, calculate indentation
- ;; to use for non-distinguished forms (> count), and move past the
- ;; function symbol. lisp-indent-function guarantees that there is at
- ;; least one word or symbol character following open paren of containing
- ;; form.
- (goto-char containing-form-start)
- (setq containing-form-column (current-column))
- (setq body-indent (+ lisp-body-indent containing-form-column))
- (forward-char 1)
- (forward-sexp 1)
- ;; Now find the start of the last form.
- (parse-partial-sexp (point) indent-point 1 t)
- (while (and (< (point) indent-point)
- (condition-case ()
- (progn
- (setq count (1- count))
- (forward-sexp 1)
- (parse-partial-sexp (point) indent-point 1 t))
- (error nil))))
- ;; Point is sitting on first character of last (or count) sexp.
- (if (> count 0)
- ;; A distinguished form. If it is the first or second form use double
- ;; lisp-body-indent, else normal indent. With lisp-body-indent bound
- ;; to 2 (the default), this just happens to work the same with if as
- ;; the older code, but it makes unwind-protect, condition-case,
- ;; with-output-to-temp-buffer, et. al. much more tasteful. The older,
- ;; less hacked, behavior can be obtained by replacing below with
- ;; (list normal-indent containing-form-start).
- (if (<= (- i count) 1)
- (list (+ containing-form-column (* 2 lisp-body-indent))
- containing-form-start)
- (list normal-indent containing-form-start))
- ;; A non-distinguished form. Use body-indent if there are no
- ;; distinguished forms and this is the first undistinguished form,
- ;; or if this is the first undistinguished form and the preceding
- ;; distinguished form has indentation at least as great as body-indent.
- (if (or (and (= i 0) (= count 0))
- (and (= count 0) (<= body-indent normal-indent)))
- body-indent
- normal-indent))))
-
- (defun lisp-indent-defform (state indent-point)
- (goto-char (car (cdr state)))
- (forward-line 1)
- (if (> (point) (car (cdr (cdr state))))
- (progn
- (goto-char (car (cdr state)))
- (+ lisp-body-indent (current-column)))))
-
-
- ;; (put 'progn 'lisp-indent-function 0), say, causes progn to be indented
- ;; like defun if the first form is placed on the next line, otherwise
- ;; it is indented like any other form (i.e. forms line up under first).
-
- (put 'lambda 'lisp-indent-function 'defun)
- (put 'autoload 'lisp-indent-function 'defun)
- (put 'progn 'lisp-indent-function 0)
- (put 'prog1 'lisp-indent-function 1)
- (put 'prog2 'lisp-indent-function 2)
- (put 'save-excursion 'lisp-indent-function 0)
- (put 'save-window-excursion 'lisp-indent-function 0)
- (put 'save-selected-window 'lisp-indent-function 0)
- (put 'save-restriction 'lisp-indent-function 0)
- (put 'save-match-data 'lisp-indent-function 0)
- (put 'let 'lisp-indent-function 1)
- (put 'let* 'lisp-indent-function 1)
- (put 'while 'lisp-indent-function 1)
- (put 'if 'lisp-indent-function 2)
- (put 'catch 'lisp-indent-function 1)
- (put 'condition-case 'lisp-indent-function 2)
- (put 'unwind-protect 'lisp-indent-function 1)
- (put 'save-current-buffer 'lisp-indent-function 0)
- (put 'with-current-buffer 'lisp-indent-function 1)
- (put 'with-temp-file 'lisp-indent-function 1)
- (put 'with-temp-buffer 'lisp-indent-function 0)
- (put 'with-output-to-string 'lisp-indent-function 0)
- (put 'with-output-to-temp-buffer 'lisp-indent-function 1)
- (put 'display-message 'lisp-indent-function 1)
- (put 'display-warning 'lisp-indent-function 1)
- (put 'global-set-key 'lisp-indent-function 1)
-
- (defun indent-sexp (&optional endpos)
- "Indent each line of the list starting just after point.
- If optional arg ENDPOS is given, indent each line, stopping when
- ENDPOS is encountered."
- (interactive)
- (let ((indent-stack (list nil))
- (next-depth 0)
- ;; If ENDPOS is non-nil, use nil as STARTING-POINT
- ;; so that calculate-lisp-indent will find the beginning of
- ;; the defun we are in.
- ;; If ENDPOS is nil, it is safe not to scan before point
- ;; since every line we indent is more deeply nested than point is.
- (starting-point (if endpos nil (point)))
- (last-point (point))
- last-depth bol outer-loop-done inner-loop-done state this-indent)
- (or endpos
- ;; Get error now if we don't have a complete sexp after point.
- (save-excursion (forward-sexp 1)))
- (save-excursion
- (setq outer-loop-done nil)
- (while (if endpos (< (point) endpos)
- (not outer-loop-done))
- (setq last-depth next-depth
- inner-loop-done nil)
- ;; Parse this line so we can learn the state
- ;; to indent the next line.
- ;; This inner loop goes through only once
- ;; unless a line ends inside a string.
- (while (and (not inner-loop-done)
- (not (setq outer-loop-done (eobp))))
- (setq state (parse-partial-sexp (point) (progn (end-of-line) (point))
- nil nil state))
- (setq next-depth (car state))
- ;; If the line contains a comment other than the sort
- ;; that is indented like code,
- ;; indent it now with indent-for-comment.
- ;; Comments indented like code are right already.
- ;; In any case clear the in-comment flag in the state
- ;; because parse-partial-sexp never sees the newlines.
- (if (car (nthcdr 4 state))
- (progn (indent-for-comment)
- (end-of-line)
- (setcar (nthcdr 4 state) nil)))
- ;; If this line ends inside a string,
- ;; go straight to next line, remaining within the inner loop,
- ;; and turn off the \-flag.
- (if (car (nthcdr 3 state))
- (progn
- (forward-line 1)
- (setcar (nthcdr 5 state) nil))
- (setq inner-loop-done t)))
- (and endpos
- (<= next-depth 0)
- (progn
- (setq indent-stack (append indent-stack
- (make-list (- next-depth) nil))
- last-depth (- last-depth next-depth)
- next-depth 0)))
- (or outer-loop-done endpos
- (setq outer-loop-done (<= next-depth 0)))
- (if outer-loop-done
- (forward-line 1)
- (while (> last-depth next-depth)
- (setq indent-stack (cdr indent-stack)
- last-depth (1- last-depth)))
- (while (< last-depth next-depth)
- (setq indent-stack (cons nil indent-stack)
- last-depth (1+ last-depth)))
- ;; Now go to the next line and indent it according
- ;; to what we learned from parsing the previous one.
- (forward-line 1)
- (setq bol (point))
- (skip-chars-forward " \t")
- ;; But not if the line is blank, or just a comment
- ;; (except for double-semi comments; indent them as usual).
- (if (or (eobp) (looking-at "\\s<\\|\n"))
- nil
- (if (and (car indent-stack)
- (>= (car indent-stack) 0))
- (setq this-indent (car indent-stack))
- (let ((val (calculate-lisp-indent
- (if (car indent-stack) (- (car indent-stack))
- starting-point))))
- (if (integerp val)
- (setcar indent-stack
- (setq this-indent val))
- (setcar indent-stack (- (car (cdr val))))
- (setq this-indent (car val)))))
- (if (/= (current-column) this-indent)
- (progn (delete-region bol (point))
- (indent-to this-indent)))))
- (or outer-loop-done
- (setq outer-loop-done (= (point) last-point))
- (setq last-point (point)))))))
-
- ;; Indent every line whose first char is between START and END inclusive.
- (defun lisp-indent-region (start end)
- (save-excursion
- (let ((endmark (copy-marker end)))
- (goto-char start)
- (and (bolp) (not (eolp))
- (lisp-indent-line))
- (indent-sexp endmark)
- (set-marker endmark nil))))
-
- ;;;; Lisp paragraph filling commands.
-
- (defun lisp-fill-paragraph (&optional justify)
- "Like \\[fill-paragraph], but handle Emacs Lisp comments.
- If any of the current line is a comment, fill the comment or the
- paragraph of it that point is in, preserving the comment's indentation
- and initial semicolons."
- (interactive "P")
- (let (
- ;; Non-nil if the current line contains a comment.
- has-comment
-
- ;; Non-nil if the current line contains code and a comment.
- has-code-and-comment
-
- ;; If has-comment, the appropriate fill-prefix for the comment.
- comment-fill-prefix
- )
-
- ;; Figure out what kind of comment we are looking at.
- (save-excursion
- (beginning-of-line)
- (cond
-
- ;; A line with nothing but a comment on it?
- ((looking-at "[ \t]*;[; \t]*")
- (setq has-comment t
- comment-fill-prefix (buffer-substring (match-beginning 0)
- (match-end 0))))
-
- ;; A line with some code, followed by a comment? Remember that the
- ;; semi which starts the comment shouldn't be part of a string or
- ;; character.
- ;; XEmacs Try this the FSF and see if it works.
- ; ((progn
- ; (while (not (looking-at ";\\|$"))
- ; (skip-chars-forward "^;\n\"\\\\?")
- ; (cond
- ; ((eq (char-after (point)) ?\\) (forward-char 2))
- ; ((memq (char-after (point)) '(?\" ??)) (forward-sexp 1))))
- ; (looking-at ";+[\t ]*"))
- ; (setq has-comment t)
- ((condition-case nil
- (save-restriction
- (narrow-to-region (point-min)
- (save-excursion (end-of-line) (point)))
- (while (not (looking-at ";\\|$"))
- (skip-chars-forward "^;\n\"\\\\?")
- (cond
- ((eq (char-after (point)) ?\\) (forward-char 2))
- ((memq (char-after (point)) '(?\" ??)) (forward-sexp 1))))
- (looking-at ";+[\t ]*"))
- (error nil))
- (setq has-comment t has-code-and-comment t)
- (setq comment-fill-prefix
- (concat (make-string (/ (current-column) 8) ?\t)
- (make-string (% (current-column) 8) ?\ )
- (buffer-substring (match-beginning 0) (match-end 0)))))))
-
- (if (not has-comment)
- (fill-paragraph justify)
-
- ;; Narrow to include only the comment, and then fill the region.
- (save-excursion
- (save-restriction
- (beginning-of-line)
- (narrow-to-region
- ;; Find the first line we should include in the region to fill.
- (save-excursion
- (while (and (zerop (forward-line -1))
- (looking-at "^[ \t]*;")))
- ;; We may have gone too far. Go forward again.
- (or (looking-at ".*;")
- (forward-line 1))
- (point))
- ;; Find the beginning of the first line past the region to fill.
- (save-excursion
- (while (progn (forward-line 1)
- (looking-at "^[ \t]*;")))
- (point)))
-
- ;; Lines with only semicolons on them can be paragraph boundaries.
- (let* ((paragraph-start (concat paragraph-start "\\|[ \t;]*$"))
- (paragraph-separate (concat paragraph-start "\\|[ \t;]*$"))
- (paragraph-ignore-fill-prefix nil)
- (fill-prefix comment-fill-prefix)
- (after-line (if has-code-and-comment
- (save-excursion
- (forward-line 1) (point))))
- (end (progn
- (forward-paragraph)
- (or (bolp) (newline 1))
- (point)))
- ;; If this comment starts on a line with code,
- ;; include that like in the filling.
- (beg (progn (backward-paragraph)
- (if (eq (point) after-line)
- (forward-line -1))
- (point))))
- (fill-region-as-paragraph beg end
- justify nil
- (save-excursion
- (goto-char beg)
- (if (looking-at fill-prefix)
- nil
- (re-search-forward comment-start-skip)
- (point))))))))
- t))
-
- (defun indent-code-rigidly (start end arg &optional nochange-regexp)
- "Indent all lines of code, starting in the region, sideways by ARG columns.
- Does not affect lines starting inside comments or strings, assuming that
- the start of the region is not inside them.
-
- Called from a program, takes args START, END, COLUMNS and NOCHANGE-REGEXP.
- The last is a regexp which, if matched at the beginning of a line,
- means don't indent that line."
- (interactive "r\np")
- (let (state)
- (save-excursion
- (goto-char end)
- (setq end (point-marker))
- (goto-char start)
- (or (bolp)
- (setq state (parse-partial-sexp (point)
- (progn
- (forward-line 1) (point))
- nil nil state)))
- (while (< (point) end)
- (or (car (nthcdr 3 state))
- (and nochange-regexp
- (looking-at nochange-regexp))
- ;; If line does not start in string, indent it
- (let ((indent (current-indentation)))
- (delete-region (point) (progn (skip-chars-forward " \t") (point)))
- (or (eolp)
- (indent-to (max 0 (+ indent arg)) 0))))
- (setq state (parse-partial-sexp (point)
- (progn
- (forward-line 1) (point))
- nil nil state))))))
-
- (provide 'lisp-mode)
-
- ;;; lisp-mode.el ends here
-