commit https://github.com/vim/vim/commit/f0e86a0dbddc18568910e9e4aaae0cd88ca8087a Author: Bram Moolenaar <Bram@vim.org> Date: Sat Mar 19 19:38:12 2016 +0100 patch 7.4.1607 Problem: Comparing a function that exists on two dicts is not backwards compatible. (Thinca) Solution: Only compare the function, not what the partial adds.

" 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<"