> (lambda (start end &rest args) > (org-src-font-lock-fontify-block "latex" start end))))
Or a safer version: (lambda (start end prop face) (when (eq face 'org-latex-and-related) (org-src-font-lock-fontify-block "latex" start end))))) Also note that the advice doesn't avoid the double setting of (font-lock-multiline t). This is harmless but it's unnecessary nevertheless. It's just intended as a workaround and to show that it's pretty simple to extend native fontification to inline snippets.