Re: repeating input with different outputs

[Ken Goldman]

On 10/14/2011 07:20 AM, ishi soichi wrote:
> I have a question about typing (or programming, or maybe a macro).
>
> Say, I'm writing a text (which can be in any mode, html-mode, cpp-mode,
> or whatever)
>
> I would like to input like
>
> chapter 4.1
> chapter 4.2
> chapter 4.3
> ...
>
> chapter 4.46
>
> So, it is very tedious. I would rather set up a program or a command
> that can do this job instantaneously.
>
> Could Emacs do this?

Of course.

I copied this off the group years ago.  Incorporate it in a keyboard 
macro and you're done.

(defun increment (n) (interactive "p")
 ;; Increment the number after point.  With an argument, add that much.
 (let (val)
   (delete-region
    (point)
    (progn
      (setq val (read (current-buffer)))
      (if (not (numberp val)) (error "Not in front of a number"))
      (point)))
   (insert (int-to-string (+ val n)))))
(global-set-key "\C-c+" 'increment)