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Disable desktop-restore-frames by default on Android

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* lisp/desktop.el (desktop-restore-frames): Default to nil when
\(featurep 'android).

* doc/emacs/misc.texi (Saving Emacs Sessions): Adjust to match.
This commit is contained in:
Po Lu 2025-04-05 10:30:30 +08:00
parent 2bced74aa9
commit d582ed9dc9
3 changed files with 22 additions and 8 deletions
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13
doc/emacs/misc.texi
View file

@ -2924,11 +2924,14 @@ can use @kbd{M-x desktop-read} to restore a previously-saved desktop
if the current Emacs session didn't load any desktop yet.
@vindex desktop-restore-frames
By default, the desktop tries to save and restore the frame and
window configuration. To disable this, set
@code{desktop-restore-frames} to @code{nil}. (See that variable's
documentation for some related options that you can customize to
fine-tune this behavior.)
By default, the desktop tries to save and restore the frame and window
configuration.@footnote{Except on Android, where this option defaults to
@code{nil} because the window manager (@pxref{Android Windowing}) is too
prohibitive to admit of restoring frame configurations.} To disable or
enable this, set @code{desktop-restore-frames} to @code{nil} or any
non-@code{nil} value respectively. (See that variable's documentation
for some related options that you can customize to fine-tune this
behavior.)
@vindex frameset-filter-alist
When the desktop restores the frame and window configuration, it

7
etc/NEWS
View file

@ -2085,6 +2085,13 @@ Put differently, this enables input events to be read and recursive
editing sessions to be started from non-main threads. The only platform
where this remains unsupported is Nextstep (GNUstep or Mac OS).
---
** 'desktop-restore-frames' has been disabled by default on Android systems.
Restrictions imposed on clients by the window manager on these systems
are too prohibitive to admit of restoring frame configurations, and on
the same account many window management facilities are unimplemented by
Emacs also.
---
** 'NSSpeechRecognitionUsageDescription' now included in "Info.plist" (macOS).
Should Emacs (or any built-in shell) invoke a process using macOS speech

10
lisp/desktop.el
View file

@ -423,13 +423,17 @@ host is off-line."
:type '(repeat symbol)
:group 'desktop)
(defcustom desktop-restore-frames t
(defcustom desktop-restore-frames (not (featurep 'android))
"When non-nil, save and restore the frame and window configuration.
See related options `desktop-restore-reuses-frames',
`desktop-restore-in-current-display', and `desktop-restore-forces-onscreen'."
`desktop-restore-in-current-display', and `desktop-restore-forces-onscreen'.
This option is enabled by default elsewhere than on Android, where it is
disabled by default as programs are too handicapped by the window
manager for frames to be restored."
:type 'boolean
:group 'desktop
:version "24.4")
:version "31.1")
(defcustom desktop-restore-in-current-display t
"Controls how restoring of frames treats displays.