From: charles@aurox.ch (Charles A. Roelli)
To: Eli Zaretskii <eliz@gnu.org>
Cc: kfogel@red-bean.com, emacs-devel@gnu.org
Subject: Re: [Emacs-diffs] master b88e7c8: Make transpose-regions interactive (Bug#30343)
Date: Sun, 25 Mar 2018 22:29:29 +0200 [thread overview]
Message-ID: <m27epz3nme.fsf@aurox.ch> (raw)
In-Reply-To: <83605kgo1w.fsf@gnu.org> (message from Eli Zaretskii on Sun, 25 Mar 2018 18:41:47 +0300)
> Date: Sun, 25 Mar 2018 18:41:47 +0300
> From: Eli Zaretskii <eliz@gnu.org>
>
> > > . having it in C doesn't make hacking harder because one can always
> > > override functions in Emacs,
> >
> > Good point. Is this written in the Elisp manual anywhere?
>
> Yes, it's documented where we describe 'defun':
>
> Be careful not to redefine existing functions unintentionally.
> ‘defun’ redefines even primitive functions such as ‘car’ without
> any hesitation or notification. Emacs does not prevent you from
> doing this, because redefining a function is sometimes done
> deliberately, and there is no way to distinguish deliberate
> redefinition from unintentional redefinition.
Thanks, this seems correct.
> > I searched for "override functions" and "override primitives" in the
> > index, but did not find a result.
>
> I would index this as "redefining functions", at least in addition to
> "overriding", if not instead of it.
I think both are good, although an index entry for "overriding
functions" could also point to the "advice" documentation, since
"overriding" is a less precise term than "redefining".
> > Instead of defining transpose-regions (and its interactive spec) in
> > Lisp (as the reverted patch did), we could take the current
> > interactive spec of transpose-regions and use that to make a preloaded
> > function named "read-two-regions" in simple.el. That would allow its
> > reuse by other commands, too.
>
> Where would such a function be useful?
Nothing specific comes to mind. There is one pair of commands that
already reads multiple regions: ediff-regions-linewise and -wordwise,
so it's not unlikely that there could be other applications.
next prev parent reply other threads:[~2018-03-25 20:29 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20180311105533.30002.78782@vcs0.savannah.gnu.org>
[not found] ` <20180311105534.3DAFD23CF3@vcs0.savannah.gnu.org>
2018-03-11 16:05 ` [Emacs-diffs] master b88e7c8: Make transpose-regions interactive (Bug#30343) Stefan Monnier
2018-03-11 17:23 ` Charles A. Roelli
2018-03-12 9:56 ` Leo Liu
2018-03-11 18:13 ` Eli Zaretskii
2018-03-15 20:20 ` Richard Copley
2018-03-16 15:23 ` Karl Fogel
2018-03-20 21:33 ` Karl Fogel
2018-03-20 21:46 ` Richard Copley
2018-03-21 7:22 ` Eli Zaretskii
2018-03-22 5:30 ` Karl Fogel
2018-03-22 7:12 ` Eli Zaretskii
2018-03-22 7:15 ` Unnecessarily moving stiff between files considered harmful (Was: [Emacs-diffs] master b88e7c8: Make transpose-regions interactive) (Bug#30343) Eli Zaretskii
2018-03-23 18:03 ` Unnecessarily moving stiff between files considered harmful Karl Fogel
2018-03-22 13:39 ` [Emacs-diffs] master b88e7c8: Make transpose-regions interactive (Bug#30343) Stefan Monnier
2018-03-23 18:05 ` Karl Fogel
2018-03-25 10:03 ` Charles A. Roelli
2018-03-25 15:41 ` Eli Zaretskii
2018-03-25 20:29 ` Charles A. Roelli [this message]
2018-03-26 15:59 ` Eli Zaretskii
2018-03-28 20:19 ` Juri Linkov
2018-03-29 4:53 ` Karl Fogel
2018-03-29 11:38 ` Eli Zaretskii
2018-03-29 12:17 ` Stefan Monnier
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