Simplify `org-latex-engraved-source-block-filter'

README.org

@@ -2215,14 +2215,6 @@ configuration objectives:
 #+caption: Set =latex= options.
 #+name: lst:set-latex-options
 #+begin_src emacs-lisp -n :results silent
-(autoload 'LaTeX-mode "latex"
-  "Major mode in AUCTeX for editing LaTeX files.
-See info under AUCTeX for full documentation.
-
-Entering LaTeX mode calls the value of `text-mode-hook',
-then the value of `TeX-mode-hook', and then the value
-of `LaTeX-mode-hook'." 'interactive)
-
 (with-eval-after-load 'latex
   (setopt LaTeX-electric-left-right-brace t
           LaTeX-section-hook '(LaTeX-section-heading
@@ -2879,7 +2871,9 @@ def __org_babel_python_format_value(result, result_file, result_params):
    org-latex-pdf-process (list (concat "latexmk -f -pdf -%latex"
                                        " -interaction=nonstopmode"
                                        " -shell-escape -outdir=%o %f"))
-   org-latex-prefer-user-labels t))
+   org-latex-prefer-user-labels t)
+
+  (put 'org-latex-toc-command 'safe-local-variable 'stringp))
 #+end_src
 
 #+caption[Setup =org-latex-classes= for backwards compatibility]:
@@ -3500,21 +3494,13 @@ environment and an unbreakable Code (floating) environment."
                         org-latex-engraved-preamble)
     (user-error "`org-latex-engraved-preamble' defines no `Breakable' environment"))
   (when (eq org-latex-src-block-backend 'engraved)
-    (let ((enter "^\\\\begin{Code}\n\\\\begin{Verbatim}")
-          (leave "^\\\\end{Verbatim}\n\\\\end{Code}"))
-      ;; Transform only blocks matching the enter regexp at position 0.
-      ;; Do not transform blocks that are listing environments.
-      (when (and (string-match enter data) (eql 0 (match-beginning 0)))
-        (setq data (replace-match
-                    "\\begin{Breakable}\n\\begin{Verbatim}" t t data))
-        (when (string-match leave data (match-end 0))
-          (setq data (replace-match
-                      "\\end{Verbatim}\n\\end{Breakable}" t t data))
-          (when (string-match enter data)
-            (user-error "The `enter' regexp `%s' should not match" enter))
-          (when (string-match leave data)
-            (user-error "The `leave' regexp `%s' should not match" leave))
-          data)))))
+    ;; Transform only blocks matching at position 0.  Therefore, do
+    ;; not transform blocks that are listing environments.
+    (when (string-match "\\`\\\\begin{Code}\n" data)
+      (setq data (replace-match "\\begin{Breakable}\n" t 'literal data))
+      (if (string-match "^\\\\end{Code}\n" data)
+          (setq data (replace-match "\\end{Breakable}\n" t 'literal data))
+        (error "Match `^\\\\end{Code}' failure")))))
 #+end_src
 
 #+caption[Smart LaTeX engraving of =org-src-mode= blocks]:
@@ -3576,9 +3562,6 @@ environments and non-floating breakable LaTeX environments by means of
   (make-local-variable 'org-export-filter-src-block-functions)
   (add-to-list 'org-export-filter-src-block-functions
                'org-latex-engraved-source-block-filter)
-  (make-variable-buffer-local 'org-latex-compiler-file-string)
-  (setq org-latex-compiler-file-string
-        "%% -*- mode: LaTeX; -*-\n%% Intended LaTeX compiler: %s\n")
   (when (fboundp 'smart-latex-engrave-org-source-blocks)
     (smart-latex-engrave-org-source-blocks)))
 #+end_src
@@ -3702,7 +3685,9 @@ The listings below implement or reimplement three groups of =org-link= types:
 #+name: lst:define-org-pdfview-link-type
 #+begin_src emacs-lisp -n :results silent
 (with-eval-after-load 'ol
-  (autoload 'pdf-view-goto-page "pdf-view" nil t)
+  (autoload 'pdf-view-goto-page
+    "Go to PAGE in PDF with optional WINDOW to go to PAGE in all windows."
+    nil t)
   (org-link-set-parameters "pdfview"
                            :follow #'org-pdfview-open
                            :export #'org-pdfview-export