When strike C-x 3, a new window and buffer will open to the right of the current buffer.
How could set it open to the left of the current?
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You mean you want the selected window being the one on the right? – JeanPierre Nov 19 '19 at 06:32
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Yes, I want my focus window on right and the new opened window to its left. @JeanPierre – AbstProcDo Nov 19 '19 at 06:42
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Here is an example of how to display a buffer in any one of four directions, i.e., above, below, left, and right: https://stackoverflow.com/a/50867710/2112489 – lawlist Nov 19 '19 at 06:49
2 Answers
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C-x 3 is bound to the function split-window-right, that splits the current window horizontally, selecting the left window. We can define a function split-window-left that calls it then change the selected window to the one on the right, eg using other window:
other-window is an interactive compiled Lisp function in ‘window.el’.
(other-window COUNT &optional ALL-FRAMES)
Select another window in cyclic ordering of windows. COUNT specifies the number of windows to skip, starting with the selected window, before making the selection.
(defun split-window-left (&optional size)
"Like split-window-right, with selected window on the right."
(interactive "P")
(split-window-right size)
(other-window 1))
We keep the same semantics for the optionalsize argument: give the width of the left window if positive, of the right one if negative.
You can bind this to C-x 3 (overriding the binding to split-window-right) or to another key, eg C-x 9:
(global-set-key "\C-x9" 'split-window-left)
JeanPierre
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This might do the trick, and it's built in:
(split-window-right-and-focus)
Split the window horizontally and focus the new window.
Tim Stewart
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Can't find this function. Where is it defined? (I'm using emacs 26.1 so it may be too old...) – JeanPierre Mar 13 '22 at 15:50
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Oops! I was looking through the source code, and this is part of Spacemacs! My fault @JeanPierre. – Tim Stewart Mar 13 '22 at 16:47