patch 9.0.1438: .fs files are falsely recognized as forth files Commit: https://github.com/vim/vim/commit/065088d5549e7711668321cc5a77c9a9b684b142 Author: Johan Kotlinski <kotlinski@gmail.com> Date: Sun Apr 2 20:29:38 2023 +0100 patch 9.0.1438: .fs files are falsely recognized as forth files Problem: .fs files are falsely recognized as forth files. Solution: Check 100 lines for something that looks like forth. (Johan Kotlinski, closes #12219, closes #11988)

" Vim filetype plugin file
" Language:             libao.conf(5) configuration file
" Previous Maintainer:  Nikolai Weibull <now@bitwi.se>
" Latest Revision:      2008-07-09

if exists("b:did_ftplugin")
  finish
endif
let b:did_ftplugin = 1

let s:cpo_save = &cpo
set cpo&vim

let b:undo_ftplugin = "setl com< cms< fo<"

setlocal comments=:# commentstring=#\ %s formatoptions-=t formatoptions+=croql

let &cpo = s:cpo_save
unlet s:cpo_save