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For minibuffer windows record minibuffers only (Bug#72487)
* src/minibuf.c (zip_minibuffer_stacks): Use wset type functions. Call 'record-window-buffer' instead of 'push-window-buffer-onto-prev' to handle all sorts of buffers shown in minibuffer windows in a uniform way. (read_minibuf): Call 'record-window-buffer' instead of 'push-window-buffer-onto-prev' for same reason as previous. * lisp/calculator.el (calculator-update-display) (calculator-save-and-quit): Make sure calculator buffer is live before operating on it. * lisp/window.el (record-window-buffer): Handle case where WINDOW is a minibuffer window: Unconditionally remove WINDOW's buffer from WINDOW's list of previous buffers and push it if and only if it is a live minibuffer (Bug#72487). Do not run 'buffer-list-update-hook' if WINDOW is a minibuffer window. (push-window-buffer-onto-prev): Make it an alias of 'record-window-buffer' so it will run the latter's checks. (replace-buffer-in-windows): Handle minibuffer windows and rewrite doc-string accordingly. * doc/lispref/windows.texi (Buffers and Windows): Explain handling of minibuffer windows in 'replace-buffer-in-windows'.
This commit is contained in:
Martin Rudalics
parent
74ea24233c
commit
fc3a7f4529
@ -2353,6 +2353,12 @@ buffers (@pxref{Window History}) of all windows (including dead windows
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that are only referenced by window configurations) and remove any
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@code{quit-restore} or @code{quit-restore-prev} parameters
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(@pxref{Window Parameters}) referencing that buffer.
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This function does not replace the buffer specified by
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@var{buffer-or-name} in any minibuffer window showing it, nor does it
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delete minibuffer windows or minibuffer frames. It removes, however,
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that buffer from the lists of previous and next buffers of all
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minibuffer windows.
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@end deffn
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By default, @code{replace-buffer-in-windows} deletes only windows
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@ -1059,6 +1059,7 @@ the `left' or `right' when one of the standard modes is used."
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(defun calculator-update-display (&optional force)
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"Update the display.
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If optional argument FORCE is non-nil, don't use the cached string."
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(when (buffer-live-p calculator-buffer)
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(set-buffer calculator-buffer)
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;; update calculator-stack-display
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(when (or force (not (eq (car calculator-stack-display)
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@ -1101,7 +1102,7 @@ If optional argument FORCE is non-nil, don't use the cached string."
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(set-buffer-modified-p nil)
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(goto-char (if calculator-display-fragile
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(1+ (length calculator-prompt))
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(1- (point)))))
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(1- (point))))))
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;;;---------------------------------------------------------------------
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;;; Stack computations
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@ -1553,6 +1554,7 @@ a multiplication."
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(defun calculator-quit ()
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"Quit calculator."
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(interactive)
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(when (buffer-live-p calculator-buffer)
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(set-buffer calculator-buffer)
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(let ((inhibit-read-only t)) (erase-buffer))
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(unless calculator-electric-mode
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@ -1563,7 +1565,7 @@ a multiplication."
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(message "Calculator done.")
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(if calculator-electric-mode
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(throw 'calculator-done nil) ; will kill the buffer
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(setq calculator-buffer nil)))
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(setq calculator-buffer nil))))
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(defun calculator-save-and-quit ()
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"Quit the calculator, saving the result on the `kill-ring'."
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124
lisp/window.el
124
lisp/window.el
@ -4469,46 +4469,66 @@ This may be a useful alternative binding for \\[delete-other-windows]
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;;; Windows and buffers.
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;; `prev-buffers' and `next-buffers' are two reserved window slots used
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;; 'prev-buffers' and 'next-buffers' are two reserved window slots used
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;; for (1) determining which buffer to show in the window when its
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;; buffer shall be buried or killed and (2) which buffer to show for
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;; `switch-to-prev-buffer' and `switch-to-next-buffer'.
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;; 'switch-to-prev-buffer' and 'switch-to-next-buffer'.
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;; `prev-buffers' consists of <buffer, window-start, window-point>
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;; 'prev-buffers' consists of <buffer, window-start, window-point>
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;; triples. The entries on this list are ordered by the time their
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;; buffer has been removed from the window, the most recently removed
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;; buffer's entry being first. The window-start and window-point
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;; components are `window-start' and `window-point' at the time the
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;; components are 'window-start' and 'window-point' at the time the
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;; buffer was removed from the window which implies that the entry must
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;; be added when `set-window-buffer' removes the buffer from the window.
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;; be added when 'set-window-buffer' removes the buffer from the window.
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;; `next-buffers' is the list of buffers that have been replaced
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;; recently by `switch-to-prev-buffer'. These buffers are the least
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;; preferred candidates of `switch-to-prev-buffer' and the preferred
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;; candidates of `switch-to-next-buffer' to switch to. This list is
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;; 'next-buffers' is the list of buffers that have been replaced
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;; recently by 'switch-to-prev-buffer'. These buffers are the least
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;; preferred candidates of 'switch-to-prev-buffer' and the preferred
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;; candidates of 'switch-to-next-buffer' to switch to. This list is
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;; reset to nil by any action changing the window's buffer with the
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;; exception of `switch-to-prev-buffer' and `switch-to-next-buffer'.
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;; `switch-to-prev-buffer' pushes the buffer it just replaced on it,
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;; `switch-to-next-buffer' pops the last pushed buffer from it.
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;; exception of 'switch-to-prev-buffer' and 'switch-to-next-buffer'.
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;; 'switch-to-prev-buffer' pushes the buffer it just replaced on it,
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;; 'switch-to-next-buffer' pops the last pushed buffer from it.
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;; Both `prev-buffers' and `next-buffers' may reference killed buffers
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;; if such a buffer was killed while the window was hidden within a
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;; window configuration. Such killed buffers get removed whenever
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;; `switch-to-prev-buffer' or `switch-to-next-buffer' encounter them.
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;; The following function is called by 'set-window-buffer' _before_ it
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;; replaces the buffer of the argument window with the new buffer. It
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;; does not record a non-minibuffer buffer (like the one created by
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;; 'calculator' in Electric mode) in a minibuffer window since the code
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;; in minibuf.c cannot handle that. The minibuf.c code calls this
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;; function exclusively to arrange minibuffers shown in minibuffer
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;; windows.
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(defun record-window-buffer (&optional window)
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"Record WINDOW's buffer.
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Add the buffer currently shown in WINDOW to the list of WINDOW's
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previous buffers. WINDOW must be a live window and defaults to the
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selected one.
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;; The following function is called by `set-window-buffer' _before_ it
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;; replaces the buffer of the argument window with the new buffer.
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(defun push-window-buffer-onto-prev (&optional window)
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"Push entry for WINDOW's buffer onto WINDOW's prev-buffers list.
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WINDOW must be a live window and defaults to the selected one.
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If WINDOW is not a minibuffer window, do not record insignificant
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buffers (buffers whose name starts with a space). If WINDOW is a
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minibuffer window, record its buffer if and only if that buffer is a
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live minibuffer (`minibufferp' with LIVE argument non-nil must return
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non-nil for it).
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Any duplicate entries for the buffer in the list are removed."
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Run `buffer-list-update-hook' if and only if WINDOW is not a minibuffer
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window."
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(let* ((window (window-normalize-window window t))
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(mini (window-minibuffer-p window))
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(buffer (window-buffer window))
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(w-list (window-prev-buffers window))
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(entry (assq buffer w-list)))
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(prev-buffers (window-prev-buffers window))
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(entry (assq buffer prev-buffers)))
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(when entry
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(setq w-list (assq-delete-all buffer w-list)))
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(setq prev-buffers (assq-delete-all buffer prev-buffers)))
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;; Reset WINDOW's next buffers. If needed, they are resurrected by
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;; `switch-to-prev-buffer' and `switch-to-next-buffer'.
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(set-window-next-buffers window nil)
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;; For minibuffer windows record live minibuffers only. For normal
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;; windows do not record insignificant buffers.
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(when (if mini
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(minibufferp buffer t)
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(not (eq (aref (buffer-name buffer) 0) ?\s)))
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(let ((start (window-start window))
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(point (window-point window)))
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(setq entry
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@ -4523,21 +4543,12 @@ Any duplicate entries for the buffer in the list are removed."
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;; Preserve window-point-insertion-type
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;; (Bug#12855)
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point window-point-insertion-type))))))
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(set-window-prev-buffers window (cons entry w-list)))))
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(set-window-prev-buffers window (cons entry prev-buffers))
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(defun record-window-buffer (&optional window)
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"Record WINDOW's buffer.
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WINDOW must be a live window and defaults to the selected one."
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(let* ((window (window-normalize-window window t))
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(buffer (window-buffer window)))
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;; Reset WINDOW's next buffers. If needed, they are resurrected by
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;; `switch-to-prev-buffer' and `switch-to-next-buffer'.
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(set-window-next-buffers window nil)
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(unless mini
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(run-hooks 'buffer-list-update-hook))))))
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;; Don't record insignificant buffers.
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(when (not (eq (aref (buffer-name buffer) 0) ?\s))
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(push-window-buffer-onto-prev window)
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(run-hooks 'buffer-list-update-hook))))
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(defalias 'push-window-buffer-onto-prev 'record-window-buffer)
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(defun unrecord-window-buffer (&optional window buffer all)
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"Unrecord BUFFER in WINDOW.
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@ -5160,10 +5171,19 @@ parameters naming it."
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;; If a window doesn't show BUFFER, unrecord BUFFER in it.
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(unrecord-window-buffer window buffer t)))))
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;; Conceptually, 'replace-buffer-in-windows' would not have to touch the
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;; list of previous buffers of a minibuffer window: As a rule,
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;; minibuffers are never deleted and any other buffers shown in a
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;; minibuffer window are not recorded by 'record-window'. To be on the
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;; safe side, 'replace-buffer-in-windows' now scans minibuffer windows
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;; too to make sure that any killed buffer gets removed from all lists
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;; of previous and next buffers. 'replace-buffer-in-windows' still does
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;; _not_ replace the buffer itself in any minibuffer window showing it.
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;; That case is still handled only in 'kill-buffer' itself.
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(defun replace-buffer-in-windows (&optional buffer-or-name)
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"Replace BUFFER-OR-NAME with some other buffer in all windows showing it.
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BUFFER-OR-NAME may be a buffer or the name of an existing buffer and
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defaults to the current buffer. Minibuffer windows are not considered.
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defaults to the current buffer.
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If the option `kill-buffer-quit-windows' is nil, behave as follows: With
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the exception of side windows, when a window showing BUFFER-OR-NAME is
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@ -5180,21 +5200,29 @@ In either case, remove the buffer denoted by BUFFER-OR-NAME from the
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lists of previous and next buffers of all windows and remove any
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`quit-restore' or `quit-restore-prev' parameters mentioning it.
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This function does not replace the buffer specified by BUFFER-OR-NAME in
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any minibuffer window showing it, nor does it delete minibuffer windows
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or minibuffer frames. It removes, however, that buffer from the lists
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of previous and next buffers of all minibuffer windows.
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If, for any window showing BUFFER-OR-NAME running the abnormal hook
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`window-deletable-functions' returns nil, do not delete that window but
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show some other buffer in that window.
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This function is called by `kill-buffer' which kills the buffer
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specified by `buffer-or-name' afterwards. It never kills a buffer by
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itself."
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This function is called by `kill-buffer' which effectively kills the
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buffer specified by `buffer-or-name' afterwards. It never kills a
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buffer by itself."
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(interactive "bBuffer to replace: ")
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(let ((buffer (window-normalize-buffer buffer-or-name)))
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;; Scan all windows. We have to unrecord BUFFER-OR-NAME in those
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;; not showing it.
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(dolist (window (window-list-1 nil nil t))
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;; Scan all windows including minibuffer windows. We have to
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;; unrecord BUFFER-OR-NAME even in those not showing it.
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(dolist (window (window-list-1 nil t t))
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(when (eq (window-buffer window) buffer)
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(if kill-buffer-quit-windows
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(quit-restore-window window 'killing)
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(cond
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((window-minibuffer-p window))
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(kill-buffer-quit-windows
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(quit-restore-window window 'killing))
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(t
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(let ((dedicated-side (eq (window-dedicated-p window) 'side)))
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(when (or dedicated-side (not (window--delete window t 'kill)))
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;; Switch to another buffer in that window.
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@ -5212,7 +5240,7 @@ itself."
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;; element of the parameter, 'quit-restore-window' cannot
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;; possibly show BUFFER instead; so this parameter becomes
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;; useless too.
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(unrecord-window-buffer window buffer t)))))
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(unrecord-window-buffer window buffer t))))))
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(defcustom quit-window-hook nil
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"Hook run before performing any other actions in the `quit-window' command."
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@ -160,16 +160,15 @@ zip_minibuffer_stacks (Lisp_Object dest_window, Lisp_Object source_window)
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set_window_buffer (dest_window, sw->contents, 0, 0);
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Fset_window_start (dest_window, Fwindow_start (source_window), Qnil);
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Fset_window_point (dest_window, Fwindow_point (source_window));
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dw->prev_buffers = sw->prev_buffers;
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wset_prev_buffers (dw, sw->prev_buffers);
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set_window_buffer (source_window, nth_minibuffer (0), 0, 0);
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sw->prev_buffers = Qnil;
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wset_prev_buffers (sw, Qnil);
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return;
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}
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if (live_minibuffer_p (dw->contents))
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call1 (Qpush_window_buffer_onto_prev, dest_window);
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if (live_minibuffer_p (sw->contents))
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call1 (Qpush_window_buffer_onto_prev, source_window);
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call1 (Qrecord_window_buffer, dest_window);
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call1 (Qrecord_window_buffer, source_window);
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acc = merge_c (dw->prev_buffers, sw->prev_buffers, minibuffer_ent_greater);
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if (!NILP (acc))
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@ -180,8 +179,9 @@ zip_minibuffer_stacks (Lisp_Object dest_window, Lisp_Object source_window)
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Fset_window_start (dest_window, Fcar (Fcdr (d_ent)), Qnil);
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Fset_window_point (dest_window, Fcar (Fcdr (Fcdr (d_ent))));
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}
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dw->prev_buffers = acc;
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sw->prev_buffers = Qnil;
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wset_prev_buffers (dw, acc);
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wset_prev_buffers (sw, Qnil);
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set_window_buffer (source_window, nth_minibuffer (0), 0, 0);
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}
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@ -688,8 +688,8 @@ read_minibuf (Lisp_Object map, Lisp_Object initial, Lisp_Object prompt,
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Fframe_first_window (MB_frame), Qnil);
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}
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MB_frame = XWINDOW (XFRAME (selected_frame)->minibuffer_window)->frame;
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if (live_minibuffer_p (XWINDOW (minibuf_window)->contents))
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call1 (Qpush_window_buffer_onto_prev, minibuf_window);
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call1 (Qrecord_window_buffer, minibuf_window);
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record_unwind_protect_void (minibuffer_unwind);
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if (read_minibuffer_restore_windows)
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12
src/window.c
12
src/window.c
@ -3647,9 +3647,17 @@ replace_buffer_in_windows (Lisp_Object buffer)
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call1 (Qreplace_buffer_in_windows, buffer);
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}
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/* If BUFFER is shown in a window, safely replace it with some other
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buffer in all windows of all frames, even those on other keyboards. */
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/** If BUFFER is shown in any window, safely replace it with some other
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buffer in all windows of all frames, even those on other keyboards.
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Do not delete any window.
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This function is called by Fkill_buffer when it detects that
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replacing BUFFER in some window showing BUFFER has failed. It
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assumes that ‘replace-buffer-in-windows’ has removed any entry
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referencing BUFFER from any window's lists of previous and next
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buffers and that window's ‘quit-restore’ and 'quit-restore-prev'
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parameters.
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*/
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void
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replace_buffer_in_windows_safely (Lisp_Object buffer)
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{
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