From: Michael Maurer <maurer.michael@gmail.com>
To: Richard Copley <rcopley@gmail.com>
Cc: help-gnu-emacs@gnu.org
Subject: Re: custom function getting initialized randomly
Date: Mon, 27 Mar 2023 16:56:29 +0200 [thread overview]
Message-ID: <CAH-0+bBkfHAddf91ZguQ_9hUXzGnhbMQto4ikphw+9GbZw4WDA@mail.gmail.com> (raw)
In-Reply-To: <CAPM58ohQQbNgyPBRy1V6cqsAwqNaq0+LP=c9k1HumAfaoJbeqQ@mail.gmail.com>
On Mon, 27 Mar 2023 at 15:56, Richard Copley <rcopley@gmail.com> wrote:
>
> On Mon, 27 Mar 2023 at 10:21, Michael Maurer <maurer.michael@gmail.com> wrote:
> >
> > Hello,
> >
> > I wrote the following function to copy the kill-ring to the scratch
> > buffer, but it only gets initialized sometimes at the start of emacs,
> > sometimes not. Why?
> >
> > (defun copy-to-scratch-on-kill
> > ()
> > "Copy every kill (delete or yank) to *scratch* buffer."
> > (let
> > ((cur-kill-string
> > (current-kill 0 t)))
> > (when
> > (and
> > (not
> > (equal cur-kill-string ""))
> > (not
> > (equal cur-kill-string prev-kill-string))
> > (get-buffer "*scratch*"))
> > (with-current-buffer "*scratch*"
> > (goto-char
> > (point-max))
> > (insert cur-kill-string "\n")
> > (goto-char
> > (point-max))))
> > (setq prev-kill-string cur-kill-string)))
> >
> > (add-hook 'post-command-hook #'copy-to-scratch-on-kill)
> >
>
> If an error propagates from the hook function (most likely "Kill ring
> is empty", signalled by `current-kill`) then Emacs removes the
> function from the hook. See the docstring for variable
> `post-command-hook`.
Would wrapping the body of the function in (ignore errors ..) be an ok
solution as far as cheap hacks go, or is it too sketchy?
next prev parent reply other threads:[~2023-03-27 14:56 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-27 8:22 custom function getting initialized randomly Michael Maurer
2023-03-27 13:56 ` Richard Copley
2023-03-27 14:56 ` Michael Maurer [this message]
2023-03-27 15:06 ` Richard Copley
2023-03-27 15:20 ` tomas
2023-03-27 15:30 ` Michael Maurer
2023-03-27 15:52 ` tomas
-- strict thread matches above, loose matches on Subject: below --
2023-03-27 8:29 Michael Maurer
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