(defun make-command-summary ()
"Make a summary of current key bindings in the buffer *Summary*.
Previous contents of that buffer are killed first."
(interactive)
(message "Making command summary...")
(save-window-excursion
(describe-bindings))
(with-output-to-temp-buffer "*Summary*"
(save-excursion
(let ((cur-mode mode-name))
(set-buffer standard-output)
(erase-buffer)
(insert-buffer-substring "*Help*")
(goto-char (point-min))
(delete-region (point) (progn (forward-line 1) (point)))
(while (search-forward " " nil t)
(replace-match " "))
(goto-char (point-min))
(while (search-forward "-@ " nil t)
(replace-match "-SP"))
(goto-char (point-min))
(while (search-forward " .. ~ " nil t)
(replace-match "SP .. ~"))
(goto-char (point-min))
(while (search-forward "C-?" nil t)
(replace-match "DEL"))
(goto-char (point-min))
(while (search-forward "C-i" nil t)
(replace-match "TAB"))
(goto-char (point-min))
(if (re-search-forward "^Local Bindings:" nil t)
(progn
(forward-char -1)
(insert " for " cur-mode " Mode")
(while (search-forward "??\n" nil t)
(delete-region (point)
(progn
(forward-line -1)
(point))))))
(goto-char (point-min))
(insert "Emacs command summary, " (substring (current-time-string) 0 10)
".\n")
(delete-region (point) (progn (forward-line 2) (point)))
(forward-line 1) (while (not (eobp))
(let ((beg (point)))
(or (re-search-forward "^$" nil t)
(goto-char (point-max)))
(double-column beg (point))
(forward-line 1)))
(goto-char (point-min)))))
(message "Making command summary...done"))
(defun double-column (start end)
(interactive "r")
(let (half cnt
line lines nlines
(from-end (- (point-max) end)))
(setq nlines (count-lines start end))
(if (<= nlines 1)
nil
(setq half (/ (1+ nlines) 2))
(goto-char start)
(save-excursion
(forward-line half)
(while (< half nlines)
(setq half (1+ half))
(setq line (buffer-substring (point) (save-excursion (end-of-line) (point))))
(setq lines (cons line lines))
(delete-region (point) (progn (forward-line 1) (point)))))
(setq lines (nreverse lines))
(while lines
(end-of-line)
(indent-to 41)
(insert (car lines))
(forward-line 1)
(setq lines (cdr lines))))
(goto-char (- (point-max) from-end))))
(provide 'makesum)