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bug#7381: 24.0.50; Provide a hook run when a window is selected
From: |
Štěpán Němec |
Subject: |
bug#7381: 24.0.50; Provide a hook run when a window is selected |
Date: |
Fri, 12 Nov 2010 18:09:36 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux) |
martin rudalics <rudalics@gmx.at> writes:
>>> Can't you use `window-configuration-change-hook'?
>>
>> I don't see how that would help, as the hook is not run when a window is
>> selected.
>
> Well, we _could_ run it when another window gets selected. But at the
> time we'd run it the identity of the old selected window would not be
> available anywhere. [...]
Right, but I don't consider that too much of a problem -- I could always
save the last two windows instead of just the last one, for instance.
But I really don't think extending `w-c-c-hook' is the right
solution. I don't see why just selecting another window should be
considered a window configuration change...
> Basically, we could keep the old window configuration around from one
> "change" to the next but it's not clear whether we want to save the
> configuration before the last command or before the last configuration
> change. In the latter case, your code would hardly know whether it runs
> within one and the same command or within different commands.
>
> Note in this context that a single command like setting up a GDB frame
> may entail a couple of configuration changes and you would have to keep
> track of all of them. And the hook would trigger within each and every
> instance of `with-selected-window' or `save-window-excursion' no matter
> how silly these macros are occasionally used.
...and these caveats seem only to confirm such doubts (although some of
them would apply to lesser extent to the hypothetical
`select-window'-specific hook as well).
What's wrong with a separate `window-selected-hook' or perhaps
`select-window-hook'?
[On a related note, it would be nice if there were some clean and simple
way to define custom hooks attached to arbitrary functions; that would
solve problems similar to this one, preventing discussions whether adding
yet another hook is worth it or not. Something like:
(define-function-hook 'select-window)
=> select-window-hook
(add-hook 'select-window-hook ...)
Dream on...]
Štěpán
- bug#7381: 24.0.50; Provide a hook run when a window is selected, Štěpán Němec, 2010/11/11
- bug#7381: 24.0.50; Provide a hook run when a window is selected, Lennart Borgman, 2010/11/11
- bug#7381: 24.0.50; Provide a hook run when a window is selected, martin rudalics, 2010/11/12
- bug#7381: 24.0.50; Provide a hook run when a window is selected, Štěpán Němec, 2010/11/12
- bug#7381: 24.0.50; Provide a hook run when a window is selected, martin rudalics, 2010/11/12
- bug#7381: 24.0.50; Provide a hook run when a window is selected, Štěpán Němec, 2010/11/12
- bug#7381: 24.0.50; Provide a hook run when a window is selected, martin rudalics, 2010/11/12
- bug#7381: 24.0.50; Provide a hook run when a window is selected,
Štěpán Němec <=
- bug#7381: 24.0.50; Provide a hook run when a window is selected, martin rudalics, 2010/11/12
- bug#7381: 24.0.50; Provide a hook run when a window is selected, Štěpán Němec, 2010/11/12
- bug#7381: 24.0.50; Provide a hook run when a window is selected, martin rudalics, 2010/11/13
- bug#7381: 24.0.50; Provide a hook run when a window is selected, Štěpán Němec, 2010/11/13
- bug#7381: 24.0.50; Provide a hook run when a window is selected, martin rudalics, 2010/11/13
- bug#7381: 24.0.50; Provide a hook run when a window is selected, Štěpán Němec, 2010/11/13
- bug#7381: 24.0.50; Provide a hook run when a window is selected, martin rudalics, 2010/11/13
- bug#7381: 24.0.50; Provide a hook run when a window is selected, Chong Yidong, 2010/11/13
- bug#7381: 24.0.50; Provide a hook run when a window is selected, martin rudalics, 2010/11/13
bug#7381: 24.0.50; Provide a hook run when a window is selected, Stefan Monnier, 2010/11/15