update packages

lisp/org/ox-latex.el

@@ -588,6 +588,7 @@ like that: \"%%\".
 Setting :latex-title-command in publishing projects will take
 precedence over this variable."
   :group 'org-export-latex
+  :safe #'stringp
   :type '(string :tag "Format string"))
 
 (defcustom org-latex-subtitle-format "\\\\\\medskip\n\\large %s"
@@ -597,6 +598,7 @@ which is replaced with the subtitle."
   :group 'org-export-latex
   :version "26.1"
   :package-version '(Org . "8.3")
+  :safe #'stringp
   :type '(string :tag "Format string"))
 
 (defcustom org-latex-subtitle-separate nil
@@ -604,6 +606,7 @@ which is replaced with the subtitle."
   :group 'org-export-latex
   :version "26.1"
   :package-version '(Org . "8.3")
+  :safe #'booleanp
   :type 'boolean)
 
 (defcustom org-latex-toc-command "\\tableofcontents\n\n"
@@ -4282,11 +4285,16 @@ Export is done in a buffer named \"*Org LATEX Export*\", which
 will be displayed when `org-export-show-temporary-export-buffer'
 is non-nil."
   (interactive)
-  (org-export-to-buffer 'latex "*Org LATEX Export*"
-    async subtreep visible-only body-only ext-plist
-    (if (fboundp 'major-mode-remap)
-        (major-mode-remap 'latex-mode)
-      #'LaTeX-mode)))
+  (defvar TeX-parse-self) ;; defined in tex.el
+  (let (;; FIXME: Working around LaTeX-mode being broken in non-file buffers.
+        ;; To be removed once we drop Emacs 30 and earlier, where the problem
+        ;; is not yet fixed.
+        (TeX-parse-self nil))
+    (org-export-to-buffer 'latex "*Org LATEX Export*"
+      async subtreep visible-only body-only ext-plist
+      (if (fboundp 'major-mode-remap)
+          (major-mode-remap 'latex-mode)
+        #'LaTeX-mode))))
 
 ;;;###autoload
 (defun org-latex-convert-region-to-latex ()