From: Stephen Berman <stephen.berman@gmx.net>
To: emacs-devel@gnu.org
Subject: Re: rename buffer but overwrite already existing one
Date: Mon, 23 Mar 2020 21:02:06 +0100 [thread overview]
Message-ID: <87sghyzvpd.fsf@gmx.net> (raw)
In-Reply-To: <87mu8697r7.fsf@mat.ucm.es> (Uwe Brauer's message of "Mon, 23 Mar 2020 20:43:56 +0100")
On Mon, 23 Mar 2020 20:43:56 +0100 Uwe Brauer <oub@mat.ucm.es> wrote:
>>>> "AS" == Andreas Schwab <schwab@linux-m68k.org> writes:
>
> > On Mär 23 2020, Uwe Brauer wrote:
> >>>>> "EZ" == Eli Zaretskii <eliz@gnu.org> writes:
> >>
> >> >> From: Uwe Brauer <oub@mat.ucm.es>
> >> >> Date: Mon, 23 Mar 2020 19:05:23 +0100
> >> >>
> >> >> Couldn't rename-buffer, optionally, overwrite the content of a buffer.
> >>
> >> > Yes, but it's called copy-to-buffer, not rename-buffer.
> >>
> >> Thanks for pointing this out to me, but I have to mark the whole buffer
> >> first, which is a but inconvenient, I say.
> >>
> >> Couldn't there an argument added so that with the argument the whole
> >> buffer is copied?
>
> > It's easy to define your own function that calls copy-to-buffer with
> > (point-min), (point-max).
>
> That is what I thought
>
> (defun my-copy-to-buffer (buffer)
> "Copy to specified BUFFER the whole buffer."
> (interactive "BCopy to buffer: \n")
> (let ((oldbuf (current-buffer)))
> (with-current-buffer (get-buffer-create buffer)
> (barf-if-buffer-read-only)
> (erase-buffer)
> (save-excursion
> (insert-buffer-substring oldbuf (point-min) (point-max))))))
>
>
> Does not work zero bytes where copied, there is something I miss, obviously.
You're calling insert-buffer-substring with point-min and point-max of
the buffer you've just created, so they're both 1. Try this:
(defun my-copy-to-buffer (buffer)
"Copy the contents of the current buffer to BUFFER."
(interactive "BCopy to buffer: ")
(let ((start (point-min))
(end (point-max)))
(copy-to-buffer buffer start end)))
Steve Berman
next prev parent reply other threads:[~2020-03-23 20:02 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-23 18:05 rename buffer but overwrite already existing one Uwe Brauer
2020-03-23 18:23 ` Stefan Monnier
2020-03-23 19:24 ` Uwe Brauer
2020-03-23 19:18 ` Eli Zaretskii
2020-03-23 19:23 ` Uwe Brauer
2020-03-23 19:35 ` Eli Zaretskii
2020-03-23 19:46 ` Uwe Brauer
2020-03-23 19:41 ` Andreas Schwab
2020-03-23 19:43 ` Uwe Brauer
2020-03-23 20:02 ` Stephen Berman [this message]
2020-03-23 20:49 ` Uwe Brauer
2020-03-23 21:21 ` Stephen Berman
2020-03-24 9:17 ` Uwe Brauer
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