Re: Writing a function for a indented copy of a region

[Andreas Politz]

Decebal wrote:
> On 17 dec, 14:31, Decebal <CLDWester...@gmail.com> wrote:
> > A lot of times I need to copy a part of a (log) file for an e-mail. I
> > like to indent this (default with four spaces). At this moment I do
> > this by hand. But I would like to do this with a function.
> > What I would like this function to do is take the part that is
> > selected, indent this with (default) four spaces, put the indented
> > region in the kill-ring and undo the indent. Has anyone a pointer
> > about how to code this?
>
> I found a way. In my .emacs I put:
> (defun my-indented-yank(indent)
>   "Put indented region in the kill-ring"
>   (interactive "p")
>   (setq indent (cond ((eq indent 0) 1)
>                      ((eq indent 1) 4)
>                      (t indent)
>                )
>   )
>   (indent-rigidly (region-beginning) (region-end) indent)
>   (copy-region-as-kill (region-beginning) (region-end))
>   (undo)
> )
>
> It looks like this satifies my demands. ;-}
> In this way the default indent is 4. If I need an indent of one I can
> use 'C-u 0'.
>
> The only thing is that the 'GNU Emacs Lisp Reference Manual' says that
> I should not use 'copy-region-as-kill'. I should use 'kill-new' or
> 'kill-append'. But those do not work with a region. What am I missing?

Why not work with a string, instead of messing with your buffers undo history.

(defun kill-save-indent-region (indent start end)
  (interactive "p\nr")
  (kill-new (replace-regexp-in-string
             "^"                      ;or "^\\s-*"
             (format (format "%%%ds" (case indent
                                       (0 1)
                                       (1 4)
                                       (t indent)))
                     "")
             (buffer-substring start end)))
  (deactivate-mark))

-ap