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bug#19972: 24.4; Font size change doesn't update (window-total-width)

From: martin rudalics
Subject: bug#19972: 24.4; Font size change doesn't update (window-total-width)
Date: Mon, 02 Mar 2015 19:12:42 +0100

>> Here you see resize_frame_windows getting called which will eventually
>> call `window--pixel-to-total' to assign the new total sizes of windows.
>> For Joost this call doesn't happen because new_windows_width equals
>> old_windows_width.
> I don't understand why that would happen.  It doesn't seem to happen
> for me, with the current emacs-24 branch.

Your backtrace was from Emacs 25.  Emacs 24 doesn't have

>>   > #1  0x01011f3e in adjust_frame_size (f=0x17d7a30 <dumped_data+2428016>,
>>   >      new_width=800, new_height=700, inhibit=5, pretend=false, 
>>   >      at frame.c:524
>> Note that x_new_font _always_ calls adjust_frame_size (even for the
>> `set-frame-font' KEEP-SIZE non-nil case) trying to adjust the frame
>> size.
>> I sincerely hope your frame was not maximized here.  Otherwise,
>> resize_frame_windows should not have been called ...
> It is called with maximized frames as well, see the backtrace below.
> #0  0x010913a4 in resize_frame_windows (f=0x3a7b5d0, size=2396, horflag=true,
>      pixelwise=true) at window.c:4211
> #1  0x0100ea3e in change_frame_size_1 (f=0x3a7b5d0, new_width=2360,
>      new_height=1300, pretend=false, delay=false, safe=false, pixelwise=true)
>      at dispnew.c:5610

This backtrace is from Emacs 24 where resize_frame_windows gets called
by change_frame_size_1.


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