lisp/makesum.el

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