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bug#19513: shift-select-mode fails to be fully buffer-local
From: |
Kelly Dean |
Subject: |
bug#19513: shift-select-mode fails to be fully buffer-local |
Date: |
Tue, 06 Jan 2015 06:59:39 +0000 |
Stefan Monnier wrote:
>> The reason I want to do that is I have a minor mode that depends on
>> shift-select-mode being disabled.
>
> Can you explain how/why?
See line-select-minor-mode in the section beginning on line 339 at
http://prtime.org/emacs/vimizer.el (currently version 0.2.2)
Comment out lines 384-385 to enable it to work with shift-select-mode, to see
how the latter interferes.
Enable the mode, then press S-down. Then press down, and since you're doing a
non-shifted motion command following a shifted motion command,
shift-select-mode deactivates the region.
The region is supposed to stay active while line-select mode is on, and
line-select is supposed to remain on until you actually do something that's
supposed to deactivate the region, e.g. C-g, C-w, etc. Motion commands
specifically are _not_ supposed to deactivate it, which is why I need
shift-select-mode disabled while the line-select mode is on.
The reason it's a problem for motion commands to deactivate it is that I have a
lot of keys bound to different motion commands depending on whether shift is
pressed. E.g. I have a key bound to right-word, and the same key shifted is
bound to forward-sexp. So I frequently press a combination of both shifted and
non-shifted keys to move, including even when line-select is on. Normally,
shift-select-mode doesn't deactivate the region, since it ignores my rebound
keys, but when I happen to press a shifted key that I _don't_ have rebound
(e.g. S-left, which Emacs translates to left, bound to the default of
left-char), shift-select-mode notices it, and then deactivates the region upon
the following non-shifted motion command.
You could say, just avoid pressing S-left, but that's not user-friendly. If I'm
doing a sequence of motion commands that happen to be bound to shifted keys,
and I need to do left-char in the middle of the sequence, I shouldn't have to
un-press shift just to prevent shift-select-mode from biting me the next time I
use a non-shifted key.
> Could you explain why you want to disable-it buffer-locally?
So that if line-select is active (which requires shift-select inactive) in one
buffer, it doesn't interfere with the user's ability to use shift-select in
another buffer.
bug#19513: shift-select-mode fails to be fully buffer-local, Kelly Dean, 2015/01/25
bug#19513: shift-select-mode fails to be fully buffer-local, Eli Zaretskii, 2015/01/25