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bug#25818: 25.2; frame moved off display does not return (OS X)
From: |
Charles A. Roelli |
Subject: |
bug#25818: 25.2; frame moved off display does not return (OS X) |
Date: |
Mon, 20 Feb 2017 21:04:58 +0100 |
After looking into a possible bug in Ediff on OS X
(https://debbugs.gnu.org/cgi/bugreport.cgi?bug=25057) it looks like
there may be a bug in the frame handling code for OS X.
You can evaluate this code from emacs -Q to have a frame gradually moved
in steps of 200 px from position ((top . 1) (left . 1)) until it's just
past the right edge of the display (more or less), and then come back
again:
(let ((display-width (display-pixel-width))
(dx 200)
(frame-x 1))
(setq frame-test (make-frame
`((top . 1) (left . ,frame-x))))
(sleep-for 0.5)
;; 1. Move it until it's off-screen.
(while (< frame-x display-width)
(setq frame-x (+ frame-x dx))
(modify-frame-parameters frame-test
`((left . ,frame-x)))
(sleep-for 0.5))
(sleep-for 1)
;; 2. Bring it back.
(while (> frame-x dx)
(setq frame-x (- frame-x dx))
(modify-frame-parameters frame-test
`((left . ,frame-x)))
(sleep-for 0.5))
(sleep-for 1)
(delete-frame frame-test))
On GNU/Linux and MS Windows the frame behaves as expected: when the
frame parameters are changed to bring it back onscreen (step 2), the
frame becomes visible again. On OS X 10.6 the frame stays off screen,
however, and I can't find any way to put it back on screen. You can
change the frame parameters for `top' and `left', and they'll stick, but
they don't actually seem to have any effect.
Can someone reproduce this on a more recent OS X? Maybe the problem is
fixed in newer versions.
In GNU Emacs 25.2.1 (x86_64-apple-darwin10.8.0, NS appkit-1038.36 Version
10.6.8 (Build 10K549))
of 2017-02-07 built on gray
Windowing system distributor 'Apple', version 10.3.1038
Configured using:
'configure --with-modules'
Configured features:
JPEG RSVG NOTIFY ACL GNUTLS LIBXML2 ZLIB TOOLKIT_SCROLL_BARS NS MODULES
- bug#25818: 25.2; frame moved off display does not return (OS X),
Charles A. Roelli <=
- bug#25818: 25.2; frame moved off display does not return (OS X), martin rudalics, 2017/02/23
- bug#25818: 25.2; frame moved off display does not return (OS X), Charles A. Roelli, 2017/02/26
- bug#25818: 25.2; frame moved off display does not return (OS X), Charles A. Roelli, 2017/02/26
- bug#25818: 25.2; frame moved off display does not return (OS X), martin rudalics, 2017/02/26
- bug#25818: 25.2; frame moved off display does not return (OS X), Charles A. Roelli, 2017/02/26
- bug#25818: 25.2; frame moved off display does not return (OS X), martin rudalics, 2017/02/27
- bug#25818: 25.2; frame moved off display does not return (OS X), Charles A. Roelli, 2017/02/27
- bug#25818: 25.2; frame moved off display does not return (OS X), Charles A. Roelli, 2017/02/27
- bug#25818: 25.2; frame moved off display does not return (OS X), Charles A. Roelli, 2017/02/28
- bug#25818: 25.2; frame moved off display does not return (OS X), Anders Lindgren, 2017/02/28