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Have 'display-buffer-reuse-window' prefer window on selected frame (Bug#36680)

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* lisp/window.el (display-buffer-reuse-window): Preferably reuse
window on selected frame (Bug#36680).
* doc/lispref/windows.texi (Buffer Display Action Functions): Say
that 'display-buffer-reuse-window' prefers window on the selected
frame.
This commit is contained in:
Martin Rudalics 2019-07-19 10:08:08 +02:00
parent 8f54998827
commit 8d34cb3f07
2 changed files with 24 additions and 10 deletions
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3
doc/lispref/windows.texi
View File

@ -2536,7 +2536,8 @@ to another buffer (@pxref{Dedicated Windows}). It also fails if
@defun display-buffer-reuse-window buffer alist
This function tries to display @var{buffer} by finding a window that
is already displaying it.
is already displaying it. Windows on the selected frame are preferred
to windows on other frames.
If @var{alist} has a non-@code{nil} @code{inhibit-same-window} entry,
the selected window is not eligible for reuse. The set of frames to

31
lisp/window.el
View File

@ -7332,25 +7332,26 @@ return nil."
(defun display-buffer-reuse-window (buffer alist)
"Return a window that is already displaying BUFFER.
Return nil if no usable window is found.
Preferably use a window on the selected frame if such a window
exists. Return nil if no usable window is found.
If ALIST has a non-nil `inhibit-same-window' entry, the selected
If ALIST has a non-nil 'inhibit-same-window' entry, the selected
window is not eligible for reuse.
If ALIST contains a `reusable-frames' entry, its value determines
If ALIST contains a 'reusable-frames' entry, its value determines
which frames to search for a reusable window:
nil -- the selected frame (actually the last non-minibuffer frame)
A frame -- just that frame
`visible' -- all visible frames
'visible' -- all visible frames
0 -- all frames on the current terminal
t -- all frames.
If ALIST contains no `reusable-frames' entry, search just the
If ALIST contains no 'reusable-frames' entry, search just the
selected frame if `display-buffer-reuse-frames' and
`pop-up-frames' are both nil; search all frames on the current
terminal if either of those variables is non-nil.
If ALIST has a non-nil `inhibit-switch-frame' entry, then in the
If ALIST has a non-nil 'inhibit-switch-frame' entry, then in the
event that a window on another frame is chosen, avoid raising
that frame."
(let* ((alist-entry (assq 'reusable-frames alist))
@ -7364,9 +7365,21 @@ that frame."
(window (if (and (eq buffer (window-buffer))
(not (cdr (assq 'inhibit-same-window alist))))
(selected-window)
(car (delq (selected-window)
(get-buffer-window-list buffer 'nomini
frames))))))
;; Preferably use a window on the selected frame,
;; if such a window exists (Bug#36680).
(let* ((windows (delq (selected-window)
(get-buffer-window-list
buffer 'nomini frames)))
(first (car windows))
(this-frame (selected-frame)))
(cond
((eq (window-frame first) this-frame)
first)
((catch 'found
(dolist (next (cdr windows))
(when (eq (window-frame next) this-frame)
(throw 'found next)))))
(t first))))))
(when (window-live-p window)
(prog1 (window--display-buffer buffer window 'reuse alist)
(unless (cdr (assq 'inhibit-switch-frame alist))