lisp/makesum.el

   1 ;;; makesum.el --- generate key binding summary for Emacs
   2
   3 ;; Copyright (C) 1985 Free Software Foundation, Inc.
   4
   5 ;; Maintainer: FSF
   6 ;; Keywords: help
   7
   8 ;; This file is part of GNU Emacs.
   9
  10 ;; GNU Emacs is free software; you can redistribute it and/or modify
  11 ;; it under the terms of the GNU General Public License as published by
  12 ;; the Free Software Foundation; either version 2, or (at your option)
  13 ;; any later version.
  14
  15 ;; GNU Emacs is distributed in the hope that it will be useful,
  16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 ;; GNU General Public License for more details.
  19
  20 ;; You should have received a copy of the GNU General Public License
  21 ;; along with GNU Emacs; see the file COPYING.  If not, write to
  22 ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  23
  24 ;;; Code:
  25
  26 ;;;###autoload
  27 (defun make-command-summary ()
  28   "Make a summary of current key bindings in the buffer *Summary*.
  29 Previous contents of that buffer are killed first."
  30   (interactive)
  31   (message "Making command summary...")
  32   ;; This puts a description of bindings in a buffer called *Help*.
  33   (save-window-excursion
  34    (describe-bindings))
  35   (with-output-to-temp-buffer "*Summary*"
  36     (save-excursion
  37      (let ((cur-mode mode-name))
  38        (set-buffer standard-output)
  39        (erase-buffer)
  40        (insert-buffer-substring "*Help*")
  41        (goto-char (point-min))
  42        (delete-region (point) (progn (forward-line 1) (point)))
  43        (while (search-forward "         " nil t)
  44          (replace-match "  "))
  45        (goto-char (point-min))
  46        (while (search-forward "-@ " nil t)
  47          (replace-match "-SP"))
  48        (goto-char (point-min))
  49        (while (search-forward "  .. ~ " nil t)
  50          (replace-match "SP .. ~"))
  51        (goto-char (point-min))
  52        (while (search-forward "C-?" nil t)
  53          (replace-match "DEL"))
  54        (goto-char (point-min))
  55        (while (search-forward "C-i" nil t)
  56          (replace-match "TAB"))
  57        (goto-char (point-min))
  58        (if (re-search-forward "^Local Bindings:" nil t)
  59            (progn
  60             (forward-char -1)
  61             (insert " for " cur-mode " Mode")
  62             (while (search-forward "??\n" nil t)
  63               (delete-region (point)
  64                              (progn
  65                               (forward-line -1)
  66                               (point))))))
  67        (goto-char (point-min))
  68        (insert "Emacs command summary, " (substring (current-time-string) 0 10)
  69                ".\n")
  70        ;; Delete "key    binding" and underlining of dashes.
  71        (delete-region (point) (progn (forward-line 2) (point)))
  72        (forward-line 1)                 ;Skip blank line
  73        (while (not (eobp))
  74          (let ((beg (point)))
  75            (or (re-search-forward "^$" nil t)
  76                (goto-char (point-max)))
  77            (double-column beg (point))
  78            (forward-line 1)))
  79        (goto-char (point-min)))))
  80   (message "Making command summary...done"))
  81
  82 (defun double-column (start end)
  83   (interactive "r")
  84   (let (half cnt
  85         line lines nlines
  86         (from-end (- (point-max) end)))
  87     (setq nlines (count-lines start end))
  88     (if (<= nlines 1)
  89         nil
  90       (setq half (/ (1+ nlines) 2))
  91       (goto-char start)
  92       (save-excursion
  93        (forward-line half)
  94        (while (< half nlines)
  95          (setq half (1+ half))
  96          (setq line (buffer-substring (point) (save-excursion (end-of-line) (point))))
  97          (setq lines (cons line lines))
  98          (delete-region (point) (progn (forward-line 1) (point)))))
  99       (setq lines (nreverse lines))
 100       (while lines
 101         (end-of-line)
 102         (indent-to 41)
 103         (insert (car lines))
 104         (forward-line 1)
 105         (setq lines (cdr lines))))
 106     (goto-char (- (point-max) from-end))))
 107
 108 ;;; makesum.el ends here