update packages

lisp/pdf-tools/pdf-util.el

@@ -607,12 +607,18 @@ string."
 ;; requires us :-(
 (defvar pdf-view-midnight-colors)
 
+(when (and (> emacs-major-version 28)
+           (not (boundp 'x-gtk-use-system-tooltips)))
+  ;; The x-gtk prefix has been dropped Emacs 29
+  (defvaralias 'x-gtk-use-system-tooltips 'use-system-tooltips))
+
 (defun pdf-util-tooltip-arrow (image-top &optional timeout)
   (pdf-util-assert-pdf-window)
   (when (floatp image-top)
     (setq image-top
           (round (* image-top (cdr (pdf-view-image-size))))))
-  (let* (x-gtk-use-system-tooltips ;allow for display property in tooltip
+  (let* ((x-gtk-use-system-tooltips nil)
+         ;; ^ allow for display text property in tooltip
          (dx (+ (or (car (window-margins)) 0)
                 (car (window-fringes))))
          (dy image-top)
@@ -901,21 +907,23 @@ frame's PPI is larger than 180. Otherwise, return 1."
     (executable-find "convert"))
   "Absolute path to the convert program."
   :group 'pdf-tools
-  :type 'executable)
+  :type '(choice (const :tag "Unset" nil) file))
 
 (defcustom pdf-util-fast-image-format nil
   "An image format appropriate for fast displaying.
 
-This should be a cons \(TYPE . EXT\) where type is the Emacs
-image-type and EXT the appropriate file extension starting with a
-dot. If nil, the value is determined automatically.
+This should be a cons (TYPE . EXT) where type is the Emacs
+`image-type' and EXT the appropriate file extension starting with
+a dot.  If nil, the value is determined automatically.
 
 Different formats have different properties, with respect to
 Emacs loading time, convert creation time and the file-size.  In
 general, uncompressed formats are faster, but may need a fair
 amount of (temporary) disk space."
   :group 'pdf-tools
-  :type '(cons symbol string))
+  :type '(choice
+          (const :tag "Determine automatically" nil)
+          (cons symbol string)))
 
 (defun pdf-util-assert-convert-program ()
   (unless (and pdf-util-convert-program