Hi, I've polished some raw ideas that I shared here a few days ago, and I have written this little package:
https://gitlab.com/maciaschain/org-font-spec-preview org-font-spec-preview allows you to preview arbitrary text strings in a chosen font (or generate a complete specimen) as well as test opentype features in real time. The preview is done in a temporary buffer, by executing org-latex-preview, and must be compiled with LuaTeX, since LuaTeX allows to load fonts that are not installed in the system. Two user commands are provided: - ofsp-system-font: Run ido and choose the candidate font from a list of fonts installed on the system; - ofsp-dired-font: Preview a font file in Dired. Feedback welcome! Best regards, Juan Manuel