From 57576de1f1fa332c62b60117049057a34f62f7b2 Mon Sep 17 00:00:00 2001
From: Gerard Vermeulen <gerard.vermeulen@posteo.net>
Date: Thu, 6 Jul 2023 07:33:58 +0200
Subject: [PATCH] Add LaTeX mode to the file variables for LaTeX export

---
 README.org | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/README.org b/README.org
index 86ab17a..b1e17c6 100644
--- a/README.org
+++ b/README.org
@@ -3,7 +3,7 @@
 #+latex_class: article-local
 #+latex_class_options: [11pt,a4paper,english,svgnames]
 #+macro: kbd (eval (by-backend-kbd-org-macro $1))
-#+options: ^:{}
+#+options: ^:{} timestamp:nil
 #+property: header-args:emacs-lisp :exports code :tangle init.el
 #+startup: showeverything
 #+begin_src latex :noweb yes :results raw
@@ -2440,6 +2440,8 @@ else:
 (with-eval-after-load 'ox-latex
   (setopt
    org-latex-compiler "lualatex"
+   org-latex-compiler-file-string
+   "%% -*- LaTeX; -*-\n%% Intended LaTeX compiler: %s\n"
    org-latex-hyperref-template "\\hypersetup{
   pdfauthor={%a},
   pdftitle={%t},
@@ -3354,6 +3356,9 @@ environments and non-floating breakable LaTeX environments by means of
   (make-variable-buffer-local '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