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bug#22298: 25.1.50; Enabling tool-bar-mode caused frame size setting fai


From: CHENG Gao
Subject: bug#22298: 25.1.50; Enabling tool-bar-mode caused frame size setting failure
Date: Mon, 11 Jan 2016 19:30:53 +0800
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1.50 (darwin)

*On Mon, 11 Jan 2016 19:08:20 +0800
* Also sprach CHENG Gao <address@hidden>:

> *On Sun, 10 Jan 2016 21:58:10 +0100
> * Also sprach Anders Lindgren <address@hidden>:
>
>> Hi Cheng!
>>
>> Ah, it was the information that the expressions should be placed in the
>> init file that I was missing.
>>
>> I can confirm that I can reproduce the problem using the following recipe.
>>
>> Place the following lines in a file, say bug22298.el:
>>
>>     (when window-system
>>       (set-frame-size (selected-frame) 155 38 nil)
>>       (tool-bar-mode 1))
>>
>>     emacs -Q -l bug22298.el
>>
>> Here, Emacs use its standard frame size whereas it should use the newly
>> specified size (155x38).
>>
>>     -- Anders Lindgren
>
> Thank you Anders.
>
> I played a while and tweaked some settings to do more tests, and found
> out that though tool-bar-mode can trigger this bug, the culprit seems
> not to be tool-bar-mode.
>
> Before set-frame-size setting, I have:
> ,----
> | (setq frame-resize-pixelwise t)
> `----
>
> With this setting, tool-bar-mode can not show after set-frame-size. If I
> comment it out, location of tool-bar-mode setting does not matter.
>
> Even I comment out frame-resize-pixelwise setting, if I use
> ,----
> |  (set-frame-size (selected-frame) 155 38 t)
> `----
> that's to use pixelwise setting, same problem as before.
>
> So it's all about pixelwise setting. I can't decide it's a bug or a
> (mis)feature.  I'll try to dig a little in C source code
> (set-frame-size), but my knowledge of C is very limited.

Sorry for my stupidity.

,----
|  (set-frame-size (selected-frame) 155 38 t)
`----
This explicitly uses pixelwise to set frame size.

Please ignore above message. It's false alarm. I need do more tests.






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