GNU bug report logs - #22164
25.0.50; Turning off blinking cursor mode makes menu tooltips behave erratically

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Package: emacs; Reported by: martin rudalics <rudalics@HIDDEN>; dated Sun, 13 Dec 2015 17:57:01 UTC; Maintainer for emacs is bug-gnu-emacs@HIDDEN.

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From: martin rudalics <rudalics@HIDDEN>
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To: Eli Zaretskii <eliz@HIDDEN>
Subject: Re: bug#22164: 25.0.50; Turning off blinking cursor mode makes menu
 tooltips behave erratically
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 > It's a known problem, and I don't know how to fix it (if a fix exists
 > at all).  We need redisplay to update the menu tooltips on Windows,
 > and without the blinking cursor there's no redisplay.

So IIUC we would have to run a timer-based function in that case and
have it cause a redisplay when the menu bar is active.

martin




Information forwarded to bug-gnu-emacs@HIDDEN:
bug#22164; Package emacs. Full text available.

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From: Eli Zaretskii <eliz@HIDDEN>
To: martin rudalics <rudalics@HIDDEN>
In-reply-to: <566DB14B.1030606@HIDDEN> (message from martin rudalics on Sun,
 13 Dec 2015 18:56:27 +0100)
Subject: Re: bug#22164: 25.0.50;
 Turning off blinking cursor mode makes menu tooltips behave
 erratically
References: <566DB14B.1030606@HIDDEN>
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> Date: Sun, 13 Dec 2015 18:56:27 +0100
> From: martin rudalics <rudalics@HIDDEN>
> 
> With emacs -Q evaluate (blink-cursor-mode -1).  Click the "File" entry
> on the menu bar.  When I now move the mouse from one menu entry to
> another it takes approximately 8 seconds until the tooltip is removed
> from the previous entry and shown at the current one.
> 
> Reproducible at least since Emacs 24.2 and likely a Windows-only bug.
> It might be related to this part of ‘blink-cursor-timer-function’
> 
>    ;; Suspend counting blinks when the w32 menu-bar menu is displayed,
>    ;; since otherwise menu tooltips will behave erratically.
>    (or (and (fboundp 'w32--menu-bar-in-use)
> 	   (w32--menu-bar-in-use))
>        (setq blink-cursor-blinks-done (1+ blink-cursor-blinks-done)))
> 
> but I cannot imagine how that can have any effect when cursor blinking
> is turned off.

It's a known problem, and I don't know how to fix it (if a fix exists
at all).  We need redisplay to update the menu tooltips on Windows,
and without the blinking cursor there's no redisplay.




Information forwarded to bug-gnu-emacs@HIDDEN:
bug#22164; Package emacs. Full text available.

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Subject: 25.0.50; Turning off blinking cursor mode makes menu tooltips behave
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With emacs -Q evaluate (blink-cursor-mode -1).  Click the "File" entry
on the menu bar.  When I now move the mouse from one menu entry to
another it takes approximately 8 seconds until the tooltip is removed
from the previous entry and shown at the current one.

Reproducible at least since Emacs 24.2 and likely a Windows-only bug.
It might be related to this part of =E2=80=98blink-cursor-timer-function=E2=
=80=99

   ;; Suspend counting blinks when the w32 menu-bar menu is displayed,
   ;; since otherwise menu tooltips will behave erratically.
   (or (and (fboundp 'w32--menu-bar-in-use)
	   (w32--menu-bar-in-use))
       (setq blink-cursor-blinks-done (1+ blink-cursor-blinks-done)))

but I cannot imagine how that can have any effect when cursor blinking
is turned off.

In GNU Emacs 25.0.50.1 (i686-pc-mingw32)
  of 2015-12-12
Repository revision: 06f00d39ff73e0c6c87ffb09ef3d67e8d3446b01
Windowing system distributor 'Microsoft Corp.', version 5.1.2600

martin





Acknowledgement sent to martin rudalics <rudalics@HIDDEN>:
New bug report received and forwarded. Copy sent to bug-gnu-emacs@HIDDEN. Full text available.
Report forwarded to bug-gnu-emacs@HIDDEN:
bug#22164; Package emacs. Full text available.
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