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Allow a function as mu4e-split-view value

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This allows to have a function returning a window as value of
`mu4e-split-view`.  I'm using this patch since quite some time locally with the
following function.

```el
(defun th/mu4e-split-view ()
  (let* ((headers (mu4e-get-headers-buffer))
         (headers-win (and headers (get-buffer-window headers)))
         (view (mu4e-get-view-buffer))
         (view-win (and view (get-buffer-window view))))
    (cond
     ;; There's a view window, just use it.
     (view-win view-win)
     ;; Just one window, split sensibly, i.e., horizontally or
     ;; vertically depending on geometry.
     ((one-window-p) (split-window-sensibly))
     ;; Otherwise, use the tallest window.
     (t (car (sort (delq headers-win (window-list))
                   (lambda (a b)
                     (> (window-height a) (window-height b)))))))))

(setq mu4e-split-view #'th/mu4e-split-view)
```
This commit is contained in:
Tassilo Horn
2021-09-25 13:51:44 +02:00
parent 191f0f478d
commit f7985103e0
2 changed files with 13 additions and 12 deletions
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20
mu4e/mu4e-headers.el
View File

@ -1269,16 +1269,16 @@ of `mu4e-split-view', and return a window for the message view."
(kill-buffer (mu4e-get-view-buffer)))
;; get a new view window
(setq mu4e~headers-view-win
(let* ((new-win-func
(cond
((eq mu4e-split-view 'horizontal) ;; split horizontally
'(split-window-vertically mu4e-headers-visible-lines))
((eq mu4e-split-view 'vertical) ;; split vertically
'(split-window-horizontally mu4e-headers-visible-columns)))))
(cond ((with-demoted-errors "Unable to split window: %S"
(eval new-win-func)))
(t ;; no splitting; just use the currently selected one
(selected-window)))))))
(with-demoted-errors "Unable to split window: %S"
(cond
((eq mu4e-split-view 'horizontal) ;; split horizontally
(split-window-vertically mu4e-headers-visible-lines))
((eq mu4e-split-view 'vertical) ;; split vertically
(split-window-horizontally mu4e-headers-visible-columns))
((functionp mu4e-split-view)
(funcall mu4e-split-view))
(t ;; no splitting; just use the currently selected one
(selected-window)))))))
;;; Search-based marking