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Re: Update `minibuffer-line' on buffer switches
From: |
Stefan Monnier |
Subject: |
Re: Update `minibuffer-line' on buffer switches |
Date: |
Sun, 28 Jun 2015 23:36:51 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.0.50 (gnu/linux) |
> very expensive. Furthermore, it would be nice to have hook(s)
> corresponding to buffer switching, e.g. tracking an event of entering
> (transferring focus) to another buffer.
These are actually fairly tricky to define in a way that corresponds to
your intuitive understanding.
But you might get partway there, by doing something like
(add-function :after pre-redisplay-function
(lambda (windows)
;; Only recompute if we've switched window, or if
;; (force-mode-line-update t) has been called.
(unless (and (consp windows) (null (cdr windows)))
(minibuffer-line--update))))
> Wouldn't Emacs 25 benefit the flexibility offered by such hooks?
> What do you think Stefan?
"switching buffer" already has a hook: window-configuration-change-hook.
Changing which window is selected does not have a hook, OTOH.
Adding a hook to `select-window' could work, but could be a bit tricky
since this function is sometimes used internally at places which don't
correspond to something which the end-user would consider as relevant.
I guess we could synthesize such a hook with pre-redisplay-function by
comparing the current selected-window with the window that was selected
last time pre-redisplay-function was run (or the same could be done with
post-command-hook). Not sure how often that would be useful.
Stefan
- Update `minibuffer-line' on buffer switches, Alexander Shukaev, 2015/06/27
- Re: Update `minibuffer-line' on buffer switches, Michael Heerdegen, 2015/06/27
- Re: Update `minibuffer-line' on buffer switches, Stefan Monnier, 2015/06/27
- Re: Update `minibuffer-line' on buffer switches, Alexander Shukaev, 2015/06/28
- Re: Update `minibuffer-line' on buffer switches, Alexander Shukaev, 2015/06/28
- Message not available
- Re: Update `minibuffer-line' on buffer switches,
Stefan Monnier <=
- Re: Update `minibuffer-line' on buffer switches, Alexander Shukaev, 2015/06/29
- Re: Update `minibuffer-line' on buffer switches, Eli Zaretskii, 2015/06/29
- Re: Update `minibuffer-line' on buffer switches, Alexander Shukaev, 2015/06/29
- Re: Update `minibuffer-line' on buffer switches, Alexander Shukaev, 2015/06/29