lisp/makesum.el

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