GNU bug report logs - #3397
NS: modeline shows inactive frame after make-frame

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Package: emacs; Reported by: David Reitter <david.reitter@HIDDEN>; Keywords: confirmed; merged with #37529, #47731; dated Wed, 27 May 2009 01:50:04 UTC; Maintainer for emacs is bug-gnu-emacs@HIDDEN.
Merged 3397 37529 47731. Request was from Alan Third <alan@HIDDEN> to control <at> debbugs.gnu.org. Full text available.

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From: Alan Third <alan@HIDDEN>
To: Adrian Robert <adrian.b.robert@HIDDEN>
Subject: Re: bug#3397: NS: modeline shows inactive frame after make-frame
References: <75DCB7B5-0963-41EA-B640-0B97C993896A@HIDDEN>
 <m2shxg7ej9.fsf@HIDDEN>
Date: Thu, 26 Aug 2021 19:40:05 +0100
In-Reply-To: <m2shxg7ej9.fsf@HIDDEN> (Alan Third's message of
 "Tue, 17 May 2016 18:58:02 +0100")
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Alan Third <alan@HIDDEN> writes:

> Adrian Robert <adrian.b.robert@HIDDEN> writes:
>
>> The docs for make-frame say:
>>
>>> This function itself does not make the new frame the selected frame.
>>> The previously selected frame remains selected.  However, the
>>> window system may select the new frame for its own reasons, for
>>> instance if the frame appears under the mouse pointer and your
>>> setup is for focus to follow the pointer.
>>
>> How does this work under X with click-to-focus?  Or W32?
>>
>> If these just leave the frame unselected, perhaps we should too,
>> though it seems disturbing to users.
>
> I just checked a GTK+ build and it selects the frame even when
> after-make-frame-functions is set to nil, so I'd guess that the NS build
> should probably do so too.

I've just realised this is the same problem as bug#47731.

Basically the NS port only creates emacs events within the NS run loop.
Emacs lisp runs outside the NS run loop, so when some GUI action is
called from lisp, by the time it gets down to windowDidBecomeKey or
whatever it checks whether it can create an event and the answer is no,
so it doesn't bother.

In this case that means it doesn't create the FOCUS_IN_EVENT for Emacs
and so Emacs doesn't set focus on the new frame.

I've no idea why this limitation is in place.
-- 
Alan Third
Information forwarded to bug-gnu-emacs@HIDDEN:
bug#3397; Package emacs. Full text available.
Merged 3397 47731. Request was from Alan Third <alan@HIDDEN> to control <at> debbugs.gnu.org. Full text available.
Added tag(s) confirmed. Request was from Alan Third <alan@HIDDEN> to control <at> debbugs.gnu.org. Full text available.

Message received at 3397 <at> debbugs.gnu.org:


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From: Alan Third <alan@HIDDEN>
To: Adrian Robert <adrian.b.robert@HIDDEN>
Subject: Re: bug#3397: NS: modeline shows inactive frame after make-frame
References: <75DCB7B5-0963-41EA-B640-0B97C993896A@HIDDEN>
Date: Tue, 17 May 2016 18:58:02 +0100
In-Reply-To: <75DCB7B5-0963-41EA-B640-0B97C993896A@HIDDEN> (Adrian Robert's
 message of "Thu, 23 Jul 2009 12:34:08 -0400")
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Adrian Robert <adrian.b.robert@HIDDEN> writes:

> The docs for make-frame say:
>
>> This function itself does not make the new frame the selected frame.
>> The previously selected frame remains selected.  However, the
>> window system may select the new frame for its own reasons, for
>> instance if the frame appears under the mouse pointer and your
>> setup is for focus to follow the pointer.
>
> How does this work under X with click-to-focus?  Or W32?
>
> If these just leave the frame unselected, perhaps we should too,
> though it seems disturbing to users.

I just checked a GTK+ build and it selects the frame even when
after-make-frame-functions is set to nil, so I'd guess that the NS build
should probably do so too.

-- 
Alan Third
Information forwarded to bug-gnu-emacs@HIDDEN:
bug#3397; Package emacs. Full text available.

Message received at 3397@HIDDEN:


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Subject: Re: NS: modeline shows inactive frame after make-frame
Date: Thu, 23 Jul 2009 12:34:08 -0400
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The docs for make-frame say:

> This function itself does not make the new frame the selected frame.
> The previously selected frame remains selected.  However, the
> window system may select the new frame for its own reasons, for
> instance if the frame appears under the mouse pointer and your
> setup is for focus to follow the pointer.

How does this work under X with click-to-focus?  Or W32?

If these just leave the frame unselected, perhaps we should too,  
though it seems disturbing to users.
Acknowledgement sent to Adrian Robert <adrian.b.robert@HIDDEN>:
Extra info received and forwarded to list. Copy sent to Emacs Bugs <bug-gnu-emacs@HIDDEN>, owner@HIDDEN. Full text available.
Information forwarded to bug-submit-list@HIDDEN, Emacs Bugs <bug-gnu-emacs@HIDDEN>, owner@HIDDEN:
bug#3397; Package emacs,ns. Full text available.
bug reassigned from package `emacs' to `emacs,ns'. Request was from Glenn Morris <rgm+emacsbugs@HIDDEN> to control@HIDDEN. Full text available.

Message received at submit@HIDDEN:


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Subject: NS: modeline shows inactive frame after make-frame
Date: Tue, 26 May 2009 21:42:51 -0400
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When after-make-frame-functions is set to nil (which is should be by  
default),
after a (make-frame), the new frame is selected but the mode-line in  
its window shows it as unselected, even though it is selected.


after-make-frame-functions defaults to (select-frame) [ns-win.el] in  
order to work around this bug.
Acknowledgement sent to David Reitter <david.reitter@HIDDEN>:
New bug report received and forwarded. Copy sent to Emacs Bugs <bug-gnu-emacs@HIDDEN>. Full text available.
Report forwarded to bug-submit-list@HIDDEN, Emacs Bugs <bug-gnu-emacs@HIDDEN>:
bug#3397; Package emacs. Full text available.
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