diff options
| author | Mattias Engdegård <mattiase@acm.org> | 2019-05-08 00:02:59 +0200 |
|---|---|---|
| committer | Mattias Engdegård <mattiase@acm.org> | 2019-05-18 14:16:21 +0200 |
| commit | 1943220d1b7ed28b2708c86acfe5493d5c6e3089 (patch) | |
| tree | 463bdfba333ec0637376d9fe4fc144fbc07bde0d /lisp/files.el | |
| parent | 4bf447bb912d73c4637f1094c265994dd99ff7e8 (diff) | |
| download | emacs-1943220d1b7ed28b2708c86acfe5493d5c6e3089.tar.gz | |
Don't use file notification on non-file buffers
Allow non-file buffers to declare that notification on their
default-directory is sufficient to know when auto-revert updates are
required by setting the new variable `buffer-auto-revert-by-notification'
to non-nil. If nil, the default, then auto-revert will poll
those buffers instead. (bug#35418).
Currently, only Dired sets that variable.
* lisp/autorevert.el (auto-revert-buffers):
Modify condition for using notification.
* lisp/files.el (buffer-auto-revert-by-notification): New variable.
* lisp/dired.el (dired-mode): Set buffer-auto-revert-by-notification.
* doc/emacs/arevert-xtra.texi (Non-File Buffers): Document new variable.
* etc/NEWS (Changes in Specialized Modes and Packages): Describe new variable.
Diffstat (limited to 'lisp/files.el')
| -rw-r--r-- | lisp/files.el | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lisp/files.el b/lisp/files.el index 8fa7f16de01..1dec0ed7ca9 100644 --- a/lisp/files.el +++ b/lisp/files.el @@ -5890,6 +5890,16 @@ This should not be relied upon. For more information on how this variable is used by Auto Revert mode, see Info node `(emacs)Supporting additional buffers'.") +(defvar-local buffer-auto-revert-by-notification nil + "Whether a buffer can rely on notification in Auto-Revert mode. +If non-nil, monitoring changes to the directory of the current +buffer is sufficient for knowing when that buffer needs to be +updated in Auto Revert Mode. Such notification does not include +changes to files in that directory, only to the directory itself. + +This variable only applies to buffers where `buffer-file-name' is +nil; other buffers are tracked by their files.") + (defvar before-revert-hook nil "Normal hook for `revert-buffer' to run before reverting. The function `revert-buffer--default' runs this. |