latexenc-find-file-coding-system
latexenc-find-file-coding-system is an autoloaded Lisp function in `latexenc.el
'.
(latexenc-find-file-coding-system ARG-LIST)
Determine the coding system of a LaTeX file if it uses "inputenc.sty".
The mapping from LaTeX's "inputenc.sty" encoding names to Emacs
coding system names is determined from `latex-inputenc-coding-alist'.