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master e3207b13ce5: Fix behavior of client frames when 'find-alternate-f
From: |
Eli Zaretskii |
Subject: |
master e3207b13ce5: Fix behavior of client frames when 'find-alternate-file' is used |
Date: |
Sat, 19 Aug 2023 03:34:53 -0400 (EDT) |
branch: master
commit e3207b13ce5acbae89441e06c19ae4df7988004e
Author: Eli Zaretskii <eliz@gnu.org>
Commit: Eli Zaretskii <eliz@gnu.org>
Fix behavior of client frames when 'find-alternate-file' is used
* lisp/files.el (find-alternate-file-dont-kill-client): New var.
(find-alternate-file): Bind it to a special value when invoking
kill-buffer-hook.
* lisp/server.el (server-delete-client): If NOFRAME is
'dont-kill-client', don't kill the client and its terminals.
(server-buffer-done): Pass 'find-alternate-file-dont-kill-client'
to 'server-delete-client'. (Bug#65277)
---
lisp/files.el | 5 ++++-
lisp/server.el | 23 ++++++++++++++++-------
2 files changed, 20 insertions(+), 8 deletions(-)
diff --git a/lisp/files.el b/lisp/files.el
index 68c0a10792d..3466a53d165 100644
--- a/lisp/files.el
+++ b/lisp/files.el
@@ -1998,6 +1998,8 @@ INHIBIT-BUFFER-HOOKS non-nil.
Note: Be careful with let-binding this hook considering it is
frequently used for cleanup.")
+(defvar find-alternate-file-dont-kill-client nil
+ "If non-nil, `server-buffer-done' should not delete the client.")
(defun find-alternate-file (filename &optional wildcards)
"Find file FILENAME, select its buffer, kill previous buffer.
If the current buffer now contains an empty file that you just visited
@@ -2044,7 +2046,8 @@ killed."
;; save a modified buffer visiting a file. Rather, `kill-buffer'
;; asks that itself. Thus, there's no need to temporarily do
;; `(set-buffer-modified-p nil)' before running this hook.
- (run-hooks 'kill-buffer-hook)
+ (let ((find-alternate-file-dont-kill-client 'dont-kill-client))
+ (run-hooks 'kill-buffer-hook))
;; Okay, now we can end-of-life the old buffer.
(if (get-buffer " **lose**")
(kill-buffer " **lose**"))
diff --git a/lisp/server.el b/lisp/server.el
index ba7e02d2555..10f15598221 100644
--- a/lisp/server.el
+++ b/lisp/server.el
@@ -330,6 +330,9 @@ ENV should be in the same format as `process-environment'."
(defun server-delete-client (proc &optional noframe)
"Delete PROC, including its buffers, terminals and frames.
If NOFRAME is non-nil, let the frames live.
+If NOFRAME is the symbol \\='dont-kill-client, also don't
+delete PROC or its terminals, just kill its buffers: this is
+for when `find-alternate-file' calls this via `kill-buffer-hook'.
Updates `server-clients'."
(server-log (concat "server-delete-client" (if noframe " noframe")) proc)
;; Force a new lookup of client (prevents infinite recursion).
@@ -366,23 +369,28 @@ Updates `server-clients'."
(set-frame-parameter frame 'client nil)
(delete-frame frame))))
- (setq server-clients (delq proc server-clients))
+ (or (eq noframe 'dont-kill-client)
+ (setq server-clients (delq proc server-clients)))
;; Delete the client's tty, except on Windows (both GUI and
;; console), where there's only one terminal and does not make
;; sense to delete it, or if we are explicitly told not.
(unless (or (eq system-type 'windows-nt)
+ ;; 'find-alternate-file' caused the last client
+ ;; buffer to be killed, but we will reuse the client
+ ;; for another buffer.
+ (eq noframe 'dont-kill-client)
(process-get proc 'no-delete-terminal))
(let ((terminal (process-get proc 'terminal)))
;; Only delete the terminal if it is non-nil.
(when (and terminal (eq (terminal-live-p terminal) t))
(delete-terminal terminal))))
- ;; Delete the client's process.
- (if (eq (process-status proc) 'open)
- (delete-process proc))
-
- (server-log "Deleted" proc))))
+ ;; Delete the client's process (or don't).
+ (unless (eq noframe 'dont-kill-client)
+ (if (eq (process-status proc) 'open)
+ (delete-process proc))
+ (server-log "Deleted" proc)))))
(defvar server-log-time-function #'current-time-string
"Function to generate timestamps for `server-buffer'.")
@@ -1590,7 +1598,8 @@ FOR-KILLING if non-nil indicates that we are called from
`kill-buffer'."
;; frames, which might change the current buffer. We
;; don't want that (bug#640).
(save-current-buffer
- (server-delete-client proc))
+ (server-delete-client proc
+ find-alternate-file-dont-kill-client))
(server-delete-client proc))))))
(when (and (bufferp buffer) (buffer-name buffer))
;; We may or may not kill this buffer;
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