commit https://github.com/vim/vim/commit/6dbf66aa3e2197ce41f2b1cc7602bb9c15840548 Author: Bram Moolenaar <Bram@vim.org> Date: Thu Dec 1 21:32:32 2016 +0100 patch 8.0.0116 Problem: When reading English help and using CTRl-] the language from 'helplang' is used. Solution: Make help tag jumps keep the language. (Tatsuki, test by Hirohito Higashi, closes #1249)

" 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<"