summaryrefslogtreecommitdiff
path: root/lisp/lisp.el
diff options
context:
space:
mode:
Diffstat (limited to 'lisp/lisp.el')
-rw-r--r--lisp/lisp.el237
1 files changed, 237 insertions, 0 deletions
diff --git a/lisp/lisp.el b/lisp/lisp.el
new file mode 100644
index 00000000000..8ecf0f329f8
--- /dev/null
+++ b/lisp/lisp.el
@@ -0,0 +1,237 @@
+;; Lisp editing commands for Emacs
+;; Copyright (C) 1985, 1986 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.
+
+
+(defun forward-sexp (&optional arg)
+ "Move forward across one balanced expression.
+With argument, do this that many times."
+ (interactive "p")
+ (or arg (setq arg 1))
+ (goto-char (or (scan-sexps (point) arg) (buffer-end arg)))
+ (if (< arg 0) (backward-prefix-chars)))
+
+(defun backward-sexp (&optional arg)
+ "Move backward across one balanced expression.
+With argument, do this that many times."
+ (interactive "p")
+ (or arg (setq arg 1))
+ (forward-sexp (- arg)))
+
+(defun mark-sexp (arg)
+ "Set mark ARG sexps from point."
+ (interactive "p")
+ (push-mark
+ (save-excursion
+ (forward-sexp arg)
+ (point))))
+
+(defun forward-list (&optional arg)
+ "Move forward across one balanced group of parentheses.
+With argument, do this that many times."
+ (interactive "p")
+ (or arg (setq arg 1))
+ (goto-char (or (scan-lists (point) arg 0) (buffer-end arg))))
+
+(defun backward-list (&optional arg)
+ "Move backward across one balanced group of parentheses.
+With argument, do this that many times."
+ (interactive "p")
+ (or arg (setq arg 1))
+ (forward-list (- arg)))
+
+(defun down-list (arg)
+ "Move forward down one level of parentheses.
+With argument, do this that many times.
+A negative argument means move backward but still go down a level."
+ (interactive "p")
+ (let ((inc (if (> arg 0) 1 -1)))
+ (while (/= arg 0)
+ (goto-char (or (scan-lists (point) inc -1) (buffer-end arg)))
+ (setq arg (- arg inc)))))
+
+(defun backward-up-list (arg)
+ "Move backward out of one level of parentheses.
+With argument, do this that many times.
+A negative argument means move forward but still to a less deep spot."
+ (interactive "p")
+ (up-list (- arg)))
+
+(defun up-list (arg)
+ "Move forward out of one level of parentheses.
+With argument, do this that many times.
+A negative argument means move backward but still to a less deep spot."
+ (interactive "p")
+ (let ((inc (if (> arg 0) 1 -1)))
+ (while (/= arg 0)
+ (goto-char (or (scan-lists (point) inc 1) (buffer-end arg)))
+ (setq arg (- arg inc)))))
+
+(defun kill-sexp (arg)
+ "Kill the syntactic expression following the cursor.
+With argument, kill that many expressions after (or before) the cursor."
+ (interactive "p")
+ (let ((opoint (point)))
+ (forward-sexp arg)
+ (kill-region opoint (point))))
+
+(defun backward-kill-sexp (arg)
+ "Kill the syntactic expression preceding the cursor.
+With argument, kill that many expressions before (or after) the cursor."
+ (interactive "p")
+ (kill-sexp (- arg)))
+
+(defun beginning-of-defun (&optional arg)
+ "Move backward to next beginning-of-defun.
+With argument, do this that many times.
+Returns t unless search stops due to end of buffer."
+ (interactive "p")
+ (and arg (< arg 0) (forward-char 1))
+ (and (re-search-backward "^\\s(" nil 'move (or arg 1))
+ (progn (beginning-of-line) t)))
+
+(defun buffer-end (arg)
+ (if (> arg 0) (point-max) (point-min)))
+
+(defun end-of-defun (&optional arg)
+ "Move forward to next end of defun.
+An end of a defun is found by moving forward from the beginning of one."
+ (interactive "p")
+ (if (or (null arg) (= arg 0)) (setq arg 1))
+ (let ((first t))
+ (while (and (> arg 0) (< (point) (point-max)))
+ (let ((pos (point)) npos)
+ (while (progn
+ (if (and first
+ (progn
+ (forward-char 1)
+ (beginning-of-defun 1)))
+ nil
+ (or (bobp) (forward-char -1))
+ (beginning-of-defun -1))
+ (setq first nil)
+ (forward-list 1)
+ (skip-chars-forward " \t")
+ (if (looking-at "[;\n]")
+ (forward-line 1))
+ (<= (point) pos))))
+ (setq arg (1- arg)))
+ (while (< arg 0)
+ (let ((pos (point)))
+ (beginning-of-defun 1)
+ (forward-sexp 1)
+ (forward-line 1)
+ (if (>= (point) pos)
+ (if (beginning-of-defun 2)
+ (progn
+ (forward-list 1)
+ (skip-chars-forward " \t")
+ (if (looking-at "[;\n]")
+ (forward-line 1)))
+ (goto-char (point-min)))))
+ (setq arg (1+ arg)))))
+
+(defun mark-defun ()
+ "Put mark at end of defun, point at beginning."
+ (interactive)
+ (push-mark (point))
+ (end-of-defun)
+ (push-mark (point))
+ (beginning-of-defun)
+ (re-search-backward "^\n" (- (point) 1) t))
+
+(defun insert-parentheses (arg)
+ "Put parentheses around next ARG sexps. Leave point after open-paren.
+No argument is equivalent to zero: just insert () and leave point between."
+ (interactive "P")
+;Install these commented-out lines for version 19.
+; (if arg (skip-chars-forward " \t")
+; (or (memq (char-syntax (preceding-char)) '(?\ ?> ?\( ))
+; (insert " ")))
+ (insert ?\()
+ (save-excursion
+ (if arg
+ (forward-sexp (prefix-numeric-value arg)))
+ (insert ?\))
+; (or (memq (char-syntax (following-char)) '(?\ ?> ?\( ))
+; (insert " "))
+ ))
+
+(defun move-past-close-and-reindent ()
+ "Move past next ), delete indentation before it, then indent after it."
+ (interactive)
+ (up-list 1)
+ (forward-char -1)
+ (while (save-excursion ; this is my contribution
+ (let ((before-paren (point)))
+ (back-to-indentation)
+ (= (point) before-paren)))
+ (delete-indentation))
+ (forward-char 1)
+ (newline-and-indent))
+
+(defun lisp-complete-symbol ()
+ "Perform completion on Lisp symbol preceding point.
+That symbol is compared against the symbols that exist
+and any additional characters determined by what is there
+are inserted.
+If the symbol starts just after an open-parenthesis,
+only symbols with function definitions are considered.
+Otherwise, all symbols with function definitions, values
+or properties are considered."
+ (interactive)
+ (let* ((end (point))
+ (buffer-syntax (syntax-table))
+ (beg (unwind-protect
+ (save-excursion
+ (set-syntax-table emacs-lisp-mode-syntax-table)
+ (backward-sexp 1)
+ (while (= (char-syntax (following-char)) ?\')
+ (forward-char 1))
+ (point))
+ (set-syntax-table buffer-syntax)))
+ (pattern (buffer-substring beg end))
+ (predicate
+ (if (eq (char-after (1- beg)) ?\()
+ 'fboundp
+ (function (lambda (sym)
+ (or (boundp sym) (fboundp sym)
+ (symbol-plist sym))))))
+ (completion (try-completion pattern obarray predicate)))
+ (cond ((eq completion t))
+ ((null completion)
+ (message "Can't find completion for \"%s\"" pattern)
+ (ding))
+ ((not (string= pattern completion))
+ (delete-region beg end)
+ (insert completion))
+ (t
+ (message "Making completion list...")
+ (let ((list (all-completions pattern obarray predicate)))
+ (or (eq predicate 'fboundp)
+ (let (new)
+ (while list
+ (setq new (cons (if (fboundp (intern (car list)))
+ (list (car list) " <f>")
+ (car list))
+ new))
+ (setq list (cdr list)))
+ (setq list (nreverse new))))
+ (with-output-to-temp-buffer " *Completions*"
+ (display-completion-list list)))
+ (message "Making completion list...%s" "done")))))