* lisp/image/image-dired.el (image-dired-tags-db-file): Rename
from 'image-dired-db-file'. Update all uses and make old name
into an obsolete variable alias.
* lisp/image/wallpaper.el (wallpaper--default-commands)
(wallpaper--check-command, wallpaper-command): Add support for Unity,
Pantheon, Budgie, LXQt, and LXDE. Also add support for Lubuntu,
Xubuntu, and Pop!_OS.
* lisp/image/wallpaper.el (wallpaper--default-commands): Rearrange
order to prioritize desktop environment specific commands before
general Wayland commands like "wbg" or even "swaybg". (Bug#57781)
* lisp/image/image-dired.el (image-dired-thumb-width)
(image-dired-thumb-height): Make obsolete.
(image-dired-thumb-size): Clean up and improve docstring.
* lisp/image/image-dired-external.el (image-dired-thumb-size): Use
'image-dired-thumb-size' instead of above obsolete variables.
(image-dired-create-thumb-1): Support %s format specifier for size.
(image-dired-cmd-create-thumbnail-options): Document %s format
specifier.
(image-dired--thumb-size): Rename function from
'image-dired-thumb-size' and make old name into an obsolete alias.
Update all callers.
* lisp/image/image-dired.el
(image-dired--file-name-regexp): New function.
(image-dired-display-thumbnail-original-image): Clean up.
(image-dired-display-image): Support visiting PDF files.
* lisp/image/image-dired-dired.el
(image-dired-dired-toggle-marked-thumbs):
* lisp/image/image-dired.el (image-dired-get-thumbnail-image)
(image-dired-show-all-from-dir): Use above new function instead of
'image-file-name-regexp'.
* lisp/image/image-dired-external.el (image-dired-create-thumb-1):
Display command and arguments when debugging.
* lisp/image/image-dired-util.el (image-dired-debug): Rename from
'image-dired-debug-message'.
* lisp/image/image-dired.el
(image-dired--on-file-in-dired-buffer): Move call to
'image-dired-thumb-update-marks' from here...
(image-dired--do-mark-command): ...to here. Add new optional
argument UPDATE to control calling it. Update callers.
(image-dired-mouse-toggle-mark-1): Fix performance bug by setting
above new optional argument to nil. (Bug#53599)
* lisp/image/wallpaper.el (wallpaper-command):
Include nil in the type since that is a valid value for the variable,
and may be the default value. This should fix test-custom-opts.
* lisp/image/wallpaper.el (wallpaper--default-commands)
(wallpaper-command): Support macOS using "osascript".
(wallpaper-set): Display image name when wallpaper-debug is t.
* src/w32fns.c (Fw32_set_wallpaper): New primitive.
(syms_of_w32fns): Defsubr it.
(globals_of_w32fns): Attempt to load SystemParametersInfoW from
its DLL at run time.
* lisp/image/wallpaper.el (wallpaper-set): Support MS-Windows by
calling 'w32-set-wallpaper'.
* etc/NEWS: Update and simplify wording of the 'wallpaper-set'
entry.
* lisp/image/image-crop.el (image-crop-elide-command): Adjust to
allow specifying the color.
(image-elide): Prompt for a color.
(image-crop--crop-image-update): Pass the color along.
* lisp/image/image-crop.el (image-crop): New group.
(image-crop-crop-command, image-crop-resize-command)
(image-crop-elide-command, image-crop-crop-command): Make into
defcustoms.
* lisp/image/image-crop.el (image-crop-buffer-text-function):
Allow modes to alter the textual representation.
(image-crop): Delete the complete image data without assuming it's
all on one line (which isn't the case in image-mode, for instance).
(image-crop--crop-image-update, image-crop--insert-image-data):
Use image-crop-buffer-text-function.
(image-crop--default-buffer-text): New default action -- don't
alter the buffer contents (bug#57793).
