patch 8.2.3686: filetype detection often mixes up Forth and F# Commit: https://github.com/vim/vim/commit/3d14c0f2b964195d08b34bb43f89ec5f99255194 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Nov 27 17:22:07 2021 +0000 patch 8.2.3686: filetype detection often mixes up Forth and F# Problem: Filetype detection often mixes up Forth and F#. Solution: Add a function to inspect the file contents. (Doug Kearns)