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bug#35177: 27.0.50; Binding deactivate-mark to nil unexpectedly deactiva
From: |
Markus Triska |
Subject: |
bug#35177: 27.0.50; Binding deactivate-mark to nil unexpectedly deactivates the mark |
Date: |
Mon, 08 Apr 2019 00:39:04 +0200 |
User-agent: |
Emacs/24.5 |
Eli Zaretskii <eliz@gnu.org> writes:
> I think you need to put the entire progn inside the binding of
> deactivate-mark. IOW, the binding should be in effect when the
> command terminates.
Please consider the following additional test cases: Both of the
following forms keep the mark activated, while neither of them has the
binding in effect when the commond terminates.
Form 1:
(progn
(let (deactivate-mark)
(switch-to-buffer (get-buffer-create "t"))
(erase-buffer)
(insert "hello"))
(set-mark-command nil)
(move-beginning-of-line nil))
Form 2:
(progn
(let (deactivate-mark)
(switch-to-buffer (get-buffer-create "t"))
(erase-buffer)
(insert "hello"))
(let (deactivate-mark-1)
(set-mark-command nil)
(move-beginning-of-line nil)))
So, it seems very unexpected to me that an additional let-binding of
deactivate-mark (to nil) causes deactivation of the mark, whereas both
of these forms keep the mark activated (when evaluated with C-x C-e).
If anything, I expect an additional let-binding of deactivate-mark to
nil to retain the active mark "all the more". In other words, if:
(progn
(let (deactivate-mark)
(switch-to-buffer (get-buffer-create "t"))
(erase-buffer)
(insert "hello"))
(let (deactivate-mark-1)
(set-mark-command nil)
(move-beginning-of-line nil)))
keeps the mark activated, then I expect the following to do too:
(progn
(let (deactivate-mark)
(switch-to-buffer (get-buffer-create "t"))
(erase-buffer)
(insert "hello"))
(let (deactivate-mark)
(set-mark-command nil)
(move-beginning-of-line nil)))
Note that I only changed deactivate-mark-1 to deactivate-mark.
So, in other words, binding deactivate-mark to nil deactivates the mark,
which is the opposite of what I expect it to do.
- bug#35177: 27.0.50; Binding deactivate-mark to nil unexpectedly deactivates the mark, Markus Triska, 2019/04/06
- bug#35177: 27.0.50; Binding deactivate-mark to nil unexpectedly deactivates the mark, Eli Zaretskii, 2019/04/07
- bug#35177: 27.0.50; Binding deactivate-mark to nil unexpectedly deactivates the mark,
Markus Triska <=
- bug#35177: 27.0.50; Binding deactivate-mark to nil unexpectedly deactivates the mark, Eli Zaretskii, 2019/04/07
- bug#35177: 27.0.50; Binding deactivate-mark to nil unexpectedly deactivates the mark, Markus Triska, 2019/04/08
- bug#35177: 27.0.50; Binding deactivate-mark to nil unexpectedly deactivates the mark, Eli Zaretskii, 2019/04/08
- bug#35177: 27.0.50; Binding deactivate-mark to nil unexpectedly deactivates the mark, Markus Triska, 2019/04/08
- bug#35177: 27.0.50; Binding deactivate-mark to nil unexpectedly deactivates the mark, Eli Zaretskii, 2019/04/08
- bug#35177: 27.0.50; Binding deactivate-mark to nil unexpectedly deactivates the mark, Noam Postavsky, 2019/04/08
- bug#35177: 27.0.50; Binding deactivate-mark to nil unexpectedly deactivates the mark, Markus Triska, 2019/04/09
- bug#35177: 27.0.50; Binding deactivate-mark to nil unexpectedly deactivates the mark, Noam Postavsky, 2019/04/09