From: Drew Adams <drew.adams@oracle.com>
To: Marcin Borkowski <mbork@mbork.pl>
Cc: rfflrccrd@gmail.com, 21072@debbugs.gnu.org
Subject: bug#21072: 24.5; inconsistent behaviour of `C-M-h (mark-defun)' in Emacs Lisp
Date: Wed, 2 Nov 2016 11:25:20 -0700 (PDT) [thread overview]
Message-ID: <c33f960f-a234-48b8-8181-c3f199592efe@default> (raw)
In-Reply-To: <87shra8hnz.fsf@mbork.pl>
> Well, both these behaviors are manifestations of the same bug.
> Below is the corrected version. (And below that a question.)
The test cases I mentioned work now. Thx. I didn't try anything
beyond those cases. Hopefully others will test a bit more.
> > 6. Interactively, I would rather see repeated use of `C-M-h',
> > after an initial use of `C-M-h' with a negative prefix arg
> > (e.g. `M-- C-M-h'), continue to select defuns backward.
> > IOW, not need to use `M--' explicitly for each `C-M-h'.
> >
> > You can just hold down `C-M-h', to select multiple defuns
> > forward. I would like to be able to do the same thing,
> > but backward, by using `M-- C-M-h C-M-h C-M-h C-M-h...'
> > (just hold down the chord).
> >
> > If you do that, then a negative prefix arg should not mean
> > backward; it should just mean change direction (backward if
> > previous command was not `mark-defun').
>
> Just to be sure: you mean only the minus sign as argument, not
> a negative number?
No, not really. But use your own judgment, I guess.
This is the kind of behavior I had in mind. This is for
`transpose-sexps', but it shows the behavior. _Any_ negative
arg flips the direction. At the outset, a negative arg means
move backward. The absolute value of ARG is the number of
sexps to move over.
(defun reversible-transpose-sexps (arg)
"Reversible and repeatable `transpose-sexps'.
Like `transpose-sexps', but:
1. Leaves point after the moved sexp.
2. When repeated, a negative prefix arg flips the direction."
(interactive "p")
(when (eq last-command 'rev-transp-sexps-back) (setq arg (- arg)))
(transpose-sexps arg)
(unless (natnump arg)
(backward-sexp (abs arg))
(skip-syntax-backward " .")
(setq this-command 'rev-transp-sexps-back)))
(If you happen to try this with ARG=0, be aware that what you
see is just the peculiar `transpose-sexps' behavior for ARG=0.
This is not related to the code here.)
> I'm also wondering whether to allow that for
> non-interactive use, too: I'm pretty sure nobody would want to call
> (mark-defun '-) from Lisp code, and it might make testing slightly
> easier.
I think the behavior should be the same. But see above. The
arg passed should be numeric (positive, zero, or negative), IMO.
next prev parent reply other threads:[~2016-11-02 18:25 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-16 6:12 bug#21072: 24.5; inconsistent behaviour of `C-M-h (mark-defun)' in Emacs Lisp Raffaele Ricciardi
2016-04-25 11:11 ` Marcin Borkowski
2016-05-01 17:17 ` Eli Zaretskii
2016-05-01 17:49 ` Marcin Borkowski
2016-05-01 18:09 ` Eli Zaretskii
2016-05-01 19:45 ` Marcin Borkowski
2016-05-01 19:56 ` Eli Zaretskii
2016-05-03 18:58 ` Marcin Borkowski
2016-05-04 14:45 ` Eli Zaretskii
2016-05-06 12:27 ` Marcin Borkowski
2016-05-06 12:59 ` Eli Zaretskii
2016-05-07 3:47 ` Marcin Borkowski
2016-05-07 5:07 ` Drew Adams
2016-10-11 12:31 ` Marcin Borkowski
2016-10-11 15:30 ` Drew Adams
2016-10-11 17:07 ` Marcin Borkowski
2016-10-11 17:52 ` Clément Pit--Claudel
2016-10-11 20:26 ` Drew Adams
2016-10-11 21:15 ` Drew Adams
2016-10-28 5:35 ` Marcin Borkowski
2016-10-28 14:32 ` Drew Adams
2016-11-02 7:28 ` Marcin Borkowski
2016-11-02 18:25 ` Drew Adams [this message]
2016-11-04 7:48 ` Marcin Borkowski
2016-11-27 7:40 ` Marcin Borkowski
2016-11-27 18:51 ` Drew Adams
2017-02-07 6:22 ` Marcin Borkowski
2017-02-07 16:14 ` Drew Adams
2016-05-07 6:47 ` Eli Zaretskii
2016-06-05 6:30 ` Marcin Borkowski
2016-06-05 7:01 ` bug#21072: Forgotten attachment (was: bug#21072: 24.5; inconsistent behaviour of `C-M-h (mark-defun)' in Emacs Lisp) Marcin Borkowski
2016-06-09 11:56 ` bug#21072: 24.5; inconsistent behaviour of `C-M-h (mark-defun)' in Emacs Lisp Marcin Borkowski
2016-06-21 7:58 ` Marcin Borkowski
2016-06-21 9:05 ` Andreas Röhler
2016-06-21 10:07 ` Marcin Borkowski
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://www.gnu.org/software/emacs/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=c33f960f-a234-48b8-8181-c3f199592efe@default \
--to=drew.adams@oracle.com \
--cc=21072@debbugs.gnu.org \
--cc=mbork@mbork.pl \
--cc=rfflrccrd@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.savannah.gnu.org/cgit/emacs.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).