From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Jonas Bernoulli <jonas@bernoul.li>
Cc: emacs-devel@gnu.org
Subject: Re: Let mode-line packages distinguish the selected-window
Date: Sat, 26 Oct 2019 12:36:24 -0400 [thread overview]
Message-ID: <jwvsgnfbhmo.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <87blu3pqyc.fsf@bernoul.li> (Jonas Bernoulli's message of "Sat, 26 Oct 2019 15:38:19 +0200")
> To deal with this the packages mentioned above resort to using several
> hook functions and advice to keep track of "the" selected window and
> then they do something like:
AFAIK since Emacs-24.4 only one hook is needed:
(add-function :before pre-redisplay-function
(lambda (_)
(setq remembered-selected-window (selected-window))))
or
(add-hook 'pre-redisplay-functions
(lambda (_) (setq remembered-selected-window (selected-window))))
> Because keeping remembered-selected-window up-to-date involves several
> hooks and advises this is rather ugly and fragile.
With `pre-redisplay-function(s)` is should be "easy and reliable".
> In summary, please add a way for functions that format elements of the
> mode-line to determine whether these elements are going to be used in
> the selected or some other window.
Despite what the above may suggest, I fully agree: while it's now easy
to "roll your own", this is a common need and we should provide this
info directly.
Stefan
next prev parent reply other threads:[~2019-10-26 16:36 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-26 13:38 Let mode-line packages distinguish the selected-window Jonas Bernoulli
2019-10-26 14:01 ` Eli Zaretskii
2019-10-26 21:10 ` martin rudalics
2019-10-27 5:01 ` Eli Zaretskii
2019-10-27 7:48 ` martin rudalics
2019-10-27 21:13 ` Jonas Bernoulli
2019-10-28 9:40 ` martin rudalics
2019-10-28 10:32 ` Jonas Bernoulli
2019-10-29 9:27 ` martin rudalics
2019-10-29 12:24 ` Eli Zaretskii
2019-10-29 18:05 ` martin rudalics
2019-10-29 18:46 ` Eli Zaretskii
2019-10-30 8:14 ` martin rudalics
2019-10-30 16:10 ` Eli Zaretskii
2019-10-28 15:55 ` Eli Zaretskii
2019-10-29 11:50 ` Jonas Bernoulli
2019-10-26 16:36 ` Stefan Monnier [this message]
2019-10-26 19:27 ` Jonas Bernoulli
2019-10-26 19:41 ` Eli Zaretskii
2019-10-26 20:36 ` Stefan Monnier
2019-10-27 18:08 ` Jonas Bernoulli
2019-10-27 21:55 ` Stefan Monnier
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