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Re: Shift selection using interactive spec
From: |
Chong Yidong |
Subject: |
Re: Shift selection using interactive spec |
Date: |
Tue, 18 Mar 2008 10:45:51 -0400 |
User-agent: |
Gnus/5.11 (Gnus v5.11) Emacs/22.1.92 (gnu/linux) |
Stefan Monnier <address@hidden> writes:
>> If the user runs any other command, it is supposed to deactivate the
>> mark/unhighlight the region.
>
> Maybe for most commands, but maybe not all. If all(most) non-shifted
> movement commands turn it off explicitly (as I suggested above), and
> given that all buffer modifications already turn it off, there isn't
> much left and those left may actually be better off *not* turning the
> selection off.
>
> I first want to try this, and only if it causes actual problems will
> I want to try something else. The "only" form is too fleeting and tends
> to disappear for the tiniest reasons. I prefer a region that
> occasionally stays ON when we don't want it than one where you feel like
> it might disappear from under you at any time.
After playing around with an implementation of this, I feel that it is
very problematic.
The trouble with using handle-shift-selection to explicitly
unhighlight the region is that every single motion command needs to
call handle-shift-selection, by adding the ^ interactive spec. For
every motion comman (or command that moves point in addition to
something else), there will be a bug: the shift-selected region won't
be highlighted. This therefore breaks backward compatibility with all
external packages that define their own motion commands.
I think it's better to stick to the implementation in my last patch,
and change those commands for which we don't want to deactivate
transient mark `only' mode. It's just a matter of making them set
`identity' back to `only'.
- Re: Shift selection using interactive spec, (continued)
- Re: Shift selection using interactive spec, martin rudalics, 2008/03/18
- Re: Shift selection using interactive spec, Chong Yidong, 2008/03/17
- Re: Shift selection using interactive spec, Stefan Monnier, 2008/03/17
- Re: Shift selection using interactive spec, martin rudalics, 2008/03/18
- Re: Shift selection using interactive spec, Stefan Monnier, 2008/03/18
- Re: Shift selection using interactive spec, Lennart Borgman (gmail), 2008/03/18
- Re: Shift selection using interactive spec,
Chong Yidong <=
- Re: Shift selection using interactive spec, Stefan Monnier, 2008/03/18
- Re: Shift selection using interactive spec, Chong Yidong, 2008/03/18
- Re: Shift selection using interactive spec, Stefan Monnier, 2008/03/18
- Re: Shift selection using interactive spec, Kim F. Storm, 2008/03/18
- Re: Shift selection using interactive spec, Lennart Borgman (gmail), 2008/03/18
- Re: Shift selection using interactive spec, M Jared Finder, 2008/03/19
- Re: Shift selection using interactive spec, David Kastrup, 2008/03/26
- Re: Shift selection using interactive spec, Juri Linkov, 2008/03/26
- Re: Shift selection using interactive spec, David Kastrup, 2008/03/26
- Re: Shift selection using interactive spec, Lennart Borgman (gmail), 2008/03/26