--- /dev/null
+;;; lisp-mode.el --- Lisp mode, and its idiosyncratic commands.
+
+;; Copyright (C) 1985, 1996, 1997 Free Software Foundation, Inc.
+;; Copyright (C) 1995 Tinker Systems.
+
+;; Maintainer: FSF
+;; Keywords: lisp, languages, dumped
+
+;; 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:
+
+;; This file is dumped with XEmacs.
+
+;; The base major mode for editing Lisp code (used also for Emacs Lisp).
+;; This mode is documented in the Emacs manual
+
+;;; Code:
+
+(defgroup lisp nil
+ "Lisp support, including Emacs Lisp."
+ :group 'languages
+ :group 'development)
+
+(defvar lisp-mode-syntax-table nil)
+(defvar emacs-lisp-mode-syntax-table nil)
+(defvar lisp-mode-abbrev-table nil)
+
+(defun construct-lisp-mode-menu (popup-p emacs-lisp-p)
+ (flet ((popup-wrap (form)
+ (if popup-p `(menu-call-at-event ',form) form)))
+ `(,@(if emacs-lisp-p
+ `(["%_Byte-Compile This File" ,(popup-wrap
+ 'emacs-lisp-byte-compile)]
+ ["B%_yte-Compile/Load This File"
+ ,(popup-wrap 'emacs-lisp-byte-compile-and-load)]
+ ["Byte-%_Recompile Directory..."
+ ,(popup-wrap 'byte-recompile-directory)]
+ "---"))
+ ["%_Evaluate Region or Defun"
+ ,(popup-wrap '(if (region-exists-p)
+ (call-interactively 'eval-region)
+ (call-interactively 'eval-defun)))]
+ ["Evaluate %_Whole Buffer" ,(popup-wrap 'eval-current-buffer)]
+ ["Evaluate Last %_S-expression" ,(popup-wrap 'eval-last-sexp)]
+ "---"
+ ,@(if popup-p
+ '(["%_Find Function"
+ (find-function (menu-call-at-event '(function-at-point)))
+ :suffix (let ((fun (menu-call-at-event '(function-at-point))))
+ (if fun (symbol-name fun) ""))
+ :active (and (fboundp 'find-function)
+ (menu-call-at-event '(function-at-point)))]
+ ["%_Find Variable"
+ (find-variable (menu-call-at-event '(variable-at-point)))
+ :suffix (let ((fun (menu-call-at-event '(variable-at-point))))
+ (if fun (symbol-name fun) ""))
+ :active (and (fboundp 'find-variable)
+ (menu-call-at-event '(variable-at-point)))]
+ ["%_Help on Function"
+ (describe-function (menu-call-at-event '(function-at-point)))
+ :suffix (let ((fun (menu-call-at-event '(function-at-point))))
+ (if fun (symbol-name fun) ""))
+ :active (and (fboundp 'describe-function)
+ (menu-call-at-event '(function-at-point)))]
+ ["%_Help on Variable"
+ (describe-variable (menu-call-at-event '(variable-at-point)))
+ :suffix (let ((fun (menu-call-at-event '(variable-at-point))))
+ (if fun (symbol-name fun) ""))
+ :active (and (fboundp 'describe-variable)
+ (menu-call-at-event '(variable-at-point)))])
+ '(["Find %_Function..." find-function
+ :active (fboundp 'find-function)]
+ ["Find %_Variable..." find-variable
+ :active (fboundp 'find-variable)]
+ ["%_Help on Function..." describe-function
+ :active (fboundp 'describe-function)]
+ ["Hel%_p on Variable..." describe-variable
+ :active (fboundp 'describe-variable)]))
+ "---"
+ ["Instrument This Defun for %_Debugging" ,(popup-wrap 'edebug-defun)]
+ ["%_Trace Function..." trace-function-background]
+ ["%_Untrace All Functions" untrace-all
+ :active (fboundp 'untrace-all)]
+ "---"
+ ["%_Comment Out Region" comment-region :active (region-exists-p)]
+ "---"
+ ["%_Indent Region or Balanced Expression"
+ ,(popup-wrap '(if (region-exists-p)
+ (call-interactively 'indent-region)
+ (call-interactively 'indent-sexp)))]
+ ["I%_ndent Defun"
+ ,(popup-wrap '(progn
+ (beginning-of-defun)
+ (indent-sexp)))]
+ "---"
+ "Look for debug-on-error under Options->Troubleshooting"
+ )))
+
+(defvar lisp-interaction-mode-popup-menu
+ (cons "Lisp-Interaction" (construct-lisp-mode-menu t nil)))
+
+(defvar emacs-lisp-mode-popup-menu
+ (cons "Emacs-Lisp" (construct-lisp-mode-menu t t)))
+
+;Don't have a menubar entry in Lisp Interaction mode. Otherwise, the
+;*scratch* buffer has a Lisp menubar item! Very confusing.
+;Jan Vroonhof really wants this, so it's back. --ben
+(defvar lisp-interaction-mode-menubar-menu
+ (cons "%_Lisp" (construct-lisp-mode-menu nil nil)))
+
+(defvar emacs-lisp-mode-menubar-menu
+ (cons "%_Lisp" (construct-lisp-mode-menu nil t)))
+
+(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 ?\f " " 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)
+ (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 ?\[ "_ " lisp-mode-syntax-table)
+ ;; XEmacs changes
+ (modify-syntax-entry ?\] "_ " lisp-mode-syntax-table)
+ (modify-syntax-entry ?# "' 58" lisp-mode-syntax-table)
+ (modify-syntax-entry ?| "\" 67" 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\\|custom\\)\\s-+\\([-A-Za-z0-9+*|:]+\\)" 2)
+ ("Types"
+ "^\\s-*(def\\(group\\|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 change
+ (set (make-local-variable 'dabbrev-case-fold-search) nil)
+ (set (make-local-variable 'dabbrev-case-replace) nil)
+ (make-local-variable 'imenu-generic-expression)
+ (setq imenu-generic-expression lisp-imenu-generic-expression))
+\f
+(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.
+)
+
+;; XEmacs: add docstrings to the hooks
+(defvar emacs-lisp-mode-hook nil
+ "Hook to run when entering emacs-lisp-mode.")
+
+(defvar lisp-mode-hook nil
+ "Hook to run when entering lisp-mode.")
+
+(defvar lisp-interaction-mode-hook nil
+ "Hook to run when entering lisp-interaction-mode.")
+
+(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)))
+ (lisp-mode-variables nil)
+ (run-hooks 'emacs-lisp-mode-hook))
+
+(put 'emacs-lisp-mode 'font-lock-lisp-like t)
+
+(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")
+ (setq mode-popup-menu lisp-interaction-mode-popup-menu)
+ (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 lisp-interaction-mode-menubar-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)))
+\f
+;; 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 (eq (car-safe expr) 'defvar)
+ (> (length expr) 2))
+ (eval (cons 'defconst (cdr expr)))
+ (when eval-interactive-verbose
+ (message "defvar treated as defconst")
+ (sit-for 1)
+ (message ""))
+ (nth 1 expr))
+ ((and (eq (car-safe expr) 'defcustom)
+ (> (length expr) 2)
+ (default-boundp (nth 1 expr)))
+ ;; Force variable to be bound
+ ;; #### defcustom might specify a different :set method.
+ (set-default (nth 1 expr) (eval (nth 2 expr)))
+ ;; And evaluate the defcustom
+ (eval expr)
+ (when 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))
+ ignore-quotes)
+ (prin1 (eval-interactive
+ (letf (((syntax-table) emacs-lisp-mode-syntax-table))
+ (save-excursion
+ ;; If this sexp appears to be enclosed in `...' then
+ ;; ignore the surrounding quotes.
+ (setq ignore-quotes (or (eq (char-after) ?\')
+ (eq (char-before) ?\')))
+ (forward-sexp -1)
+ ;; vladimir@cs.ualberta.ca 30-Jul-1997: skip ` in
+ ;; `variable' so that the value is returned, not the
+ ;; name.
+ (if (and ignore-quotes
+ (eq (char-after) ?\`))
+ (forward-char))
+ (save-restriction
+ (narrow-to-region (point-min) opoint)
+ (let ((expr (read (current-buffer))))
+ (if (eq (car-safe expr) 'interactive)
+ ;; If it's an (interactive ...) form, it's
+ ;; more useful to show how an interactive call
+ ;; would use it.
+ `(call-interactively
+ (lambda (&rest args)
+ ,expr args))
+ expr)))))))))
+
+(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)))))))
+
+\f
+(defun lisp-comment-indent ()
+ (if (looking-at "\\s<\\s<\\s<")
+ (current-column)
+ (if (looking-at "\\s<\\s<")
+ ;; #### FSF has:
+ ;; (let ((tem (or (calculate-lisp-indent) (current-column)))) ...
+ (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))
+
+(defvar lisp-indent-offset nil)
+(defvar 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) (backward-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 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)
+ (if (condition-case nil
+ (save-excursion
+ (backward-up-list 1)
+ (backward-up-list 1)
+ (backward-up-list 1)
+ (looking-at "(flet\\s-"))
+ (error nil))
+ (setq method 'defun)
+ (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)))))))
+
+(defvar 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)))))
+
+\f
+;; (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 'with-selected-window 'lisp-indent-function 1)
+(put 'save-selected-frame 'lisp-indent-function 0)
+(put 'with-selected-frame 'lisp-indent-function 1)
+(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 'let-specifier 'lisp-indent-function 1)
+(put 'flet '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 'handler-case 'lisp-indent-function 1)
+(put 'handler-bind 'lisp-indent-function 1)
+(put 'call-with-condition-handler '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-string-as-buffer-contents '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 'with-slots 'lisp-indent-function 2)
+(put 'with-open-file 'lisp-indent-function 1)
+(put 'with-open-stream 'lisp-indent-function 1)
+(put 'eval-after-load 'lisp-indent-function 1)
+(put 'display-message 'lisp-indent-function 1)
+(put 'display-warning 'lisp-indent-function 1)
+(put 'lmessage 'lisp-indent-function 2)
+(put 'lwarn 'lisp-indent-function 2)
+(put 'global-set-key 'lisp-indent-function 1)
+(put 'print-unreadable-object '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))))
+\f
+;;;; 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))
+\f
+(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
projects / chise / xemacs-chise.git- / blobdiff