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 indent file
" Language:      BibTeX
" Maintainer:    Dorai Sitaram <ds26@gte.com>
" URL:		 http://www.ccs.neu.edu/~dorai/vimplugins/vimplugins.html
" Last Change:   2005 Mar 28

" Only do this when not done yet for this buffer
if exists("b:did_indent")
  finish
endif
let b:did_indent = 1

setlocal cindent

let b:undo_indent = "setl cin<"