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bug#44483: 27.1.50; Window parameter `min-margins' doesn't split window
bug#44483: 27.1.50; Window parameter `min-margins' doesn't split window in half
Fri, 6 Nov 2020 19:12:51 +0100
> 1. Open any text file, preferably with long lines (to better see the effect).
> 2. `M-x visual-line-mode RET`
> 3. `M-: (set-window-margins (selected-window) 0 150) RET`
> The number 150 is arbitrary. It's appropriate for my case (with a frame width
> about 238 characters).
> 4. `M-: (set-window-parameter (selected-window) 'min-margins '(0 . 0)) RET`
> 5. `C-x 3`
> At this point, I expect the window to be split into two equally-sized
> side-by-side windows, but the split is at about one third of the original
The problem is that when we split the original window, the new window
does not get its 'min-margins' parameter set and the subsequent
sanitizing step screws up things. Please try the attached patch.
And please look also into what happens when you shrink a frame with such
large margins to a size that won't accommodate those margins any more
unless they get shrunk. I'm afraid that the subsequent sanitizing step
might cause troubles there as well.
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