Emacs: dired-preview version 0.5.0
This is a simple package to automatically preview in a window the file at point in Dired buffers. Preview windows are closed when they are no longer relevant, while preview buffers are killed if they have not been used for other purposes beside previewing. The package provides several customisation options to control its behaviour.
- Package name (GNU ELPA):
dired-preview - Official manual: https://protesilaos.com/emacs/dired-preview
- Git repositories:
- Backronym: Directories Invariably Render Everything Decently … preview; dired … PDFs Require Extra Viewing Instructions for Emacs to Work.
Below are the release notes
Version 0.5.0 on 2025-04-09
This version contains a few bug fixes and minor refinements that should improve the behaviour of the package.
Revised how preview windows are deleted
In the past, dired-preview-mode could delete windows that held
another buffer, thus undoing the window layout that was present before
a preview buffer was displayed. Now dired-preview-mode makes sure to
only delete windows that have not had another buffer shown in them,
i.e. windows that were created just for preview purposes.
Directories no longer get misunderstood as “large files”
We tweaked how we test the type of the buffer-to-be-preview such that directories are not mistaken for “large files”. This was an issue for Mac computers that Sean Devlin brought to my attention in issue 27: https://github.com/protesilaos/dired-preview/issues/27.
The dired-preview-delay has a 0.1 second minimum to avoid instability
A value of 0 could lead to a noticeably degraded experience while navigating the Dired buffer. Thanks to Yiyu Zhou for reporting the matter in issue 2 on the GitLab mirror: https://gitlab.com/protesilaos/dired-preview/-/issues/2.
Files without an extension can also be ignored
The user option dired-preview-ignored-extensions-regexp will now
also match files without an extension, such as the .DS_Store on Mac
computers.
Thanks to Sean Devlin for the contribution in pull request 26: https://github.com/protesilaos/dired-preview/pull/26. The change is within the ~15-line limit, meaning that Sean does not need to assign copyright to the Free Software Foundation.
The preview buffer is the “other window” for scrolling purposes
The commands which scroll the other window, such as
scroll-other-window now operate on the preview buffer when that is
displayed. Thanks to Karthik Chikmagalur for proposing this in issue
24: https://github.com/protesilaos/dired-preview/issues/24.
This is in addition to the commands we already provided for scrolling
the preview window, namely, dired-preview-page-up and dired-preview-page-down.
Do M-x describe-keymap and then search for dired-preview-mode-map:
it is in effect when dired-preview-mode is enabled.