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bug#31650: 26.1; Desktop mode adds wm stickiness to emacs windows.
From: |
martin rudalics |
Subject: |
bug#31650: 26.1; Desktop mode adds wm stickiness to emacs windows. |
Date: |
Thu, 31 May 2018 09:28:10 +0200 |
>> Does it also make the frame sticky when with emacs -Q you simply
>> evaluate
>>
>> (set-frame-parameter frame 'sticky nil)))
>
> It's not exactly clear to me what code you ask me to evaluate (the code
> above isn't syntactically correct or only a part of the code you want me
> to evalute.
Sorry. I initially meant you to try with
(let (sticky-frames)
(dolist (frame (frame-list))
(when (frame-parameter frame 'sticky)
(setq sticky-frames (cons frame sticky-frames))
(set-frame-parameter frame 'sticky nil)))
(when sticky-frames
(message "The following frames were found sticky: %s" sticky-frames)))
which should _avoid_ making a frame inadvertently sticky during
checking but then I decided that it would be better to evaluate just
(set-frame-parameter nil 'sticky nil)
in order to _provoke_ making a frame sticky (this should explain where
the two extraneous right parentheses come from). Evaluating the
latter does no change the stickyness of the emacs -Q frame here
(Debian with Xfce 4.8 and xfwm4). Since with a single frame doing
> If I start emacs -Q and evalute just
>
> (dolist (frame (frame-list))
> (set-frame-parameter frame 'sticky nil))
>
> in the scratch buffer then, yes, this also puts the frame into sticky
> mode.
is equivalent to my single-line form you already confirmed that
setting the paramter to nil makes your frame sticky. Hence our
systems apparently behave differently. I suppose that evaluating
(set-frame-parameter nil 'sticky nil)
repeatedly makes your frame sticky the first time and does not change
("toggle") its stickyness afterwards. Right? And I also suppose that
(set-frame-parameter nil 'sticky t)
behaves just the same as with nil. Right?
> Hm. From looking around I see that x_set_sticky and set_wm_state are C
> functions in xterm.c and x_send_client_event and x_fill_property_data
> are C functions in xselect.c.
>
> I guess you mean I should run emacs under gdb, set breakpoints to that
> functions and inspect the arguments given to the calls. Unfortunately
> I'm not used to gdb.
>
> With the help of etc/DEBUG (part of the emacs source distribution) I was
> able to start emacs from within emacs with the help of M-x gdb, to set
> break points to this four functions and run the new instance, with
> execution stoping at my breakpoints.
Great.
> But I'm unsure what information could help to understand the problem (I
> guess, the values of the function parameters?) and how to gather them in
> a way that provide insight.
>
> I'd appreciate more detailed hints what (and how) I should look for.
I'm unsure as well. If I set a breakpoint in set_wm_state and
evaluate
(set-frame-parameter nil 'sticky nil)
in the debugged emacs, then doing
p add
in the debugging emacs prints false while doing
(set-frame-parameter nil 'sticky t)
in the debugged emacs has
p add
print true instead. I suppose you see the same. The next thing we
could check is whether setting a breakpoint at cons_to_x_long in
x_fill_property_data does produce a val of 0 for setting the parameter
to nil and 1 for setting the parameter to true (it does so here).
And one other thing to check is: When you set stickyness via the
window manager, does the 'sticky' parameter of your frame reflect the
actual state correctly?
martin
- bug#31650: 26.1; Desktop mode adds wm stickiness to emacs windows., Rolf Ade, 2018/05/29
- bug#31650: 26.1; Desktop mode adds wm stickiness to emacs windows., martin rudalics, 2018/05/30
- bug#31650: 26.1; Desktop mode adds wm stickiness to emacs windows., Rolf Ade, 2018/05/30
- bug#31650: 26.1; Desktop mode adds wm stickiness to emacs windows., martin rudalics, 2018/05/30
- bug#31650: 26.1; Desktop mode adds wm stickiness to emacs windows., Rolf Ade, 2018/05/30
- bug#31650: 26.1; Desktop mode adds wm stickiness to emacs windows.,
martin rudalics <=
- bug#31650: 26.1; Desktop mode adds wm stickiness to emacs windows., Rolf Ade, 2018/05/31
- bug#31650: 26.1; Desktop mode adds wm stickiness to emacs windows., martin rudalics, 2018/05/31
- bug#31650: 26.1; Desktop mode adds wm stickiness to emacs windows., Robert Pluim, 2018/05/31
- bug#31650: 26.1; Desktop mode adds wm stickiness to emacs windows., Robert Pluim, 2018/05/31
- bug#31650: 26.1; Desktop mode adds wm stickiness to emacs windows., Noam Postavsky, 2018/05/31