commit https://github.com/vim/vim/commit/f3654827368e6204608036353a0360e9e7c21e02 Author: Bram Moolenaar <Bram@vim.org> Date: Fri Mar 4 22:12:23 2016 +0100 patch 7.4.1486 Problem: ":loadplugin" is not optimal, some people find it confusing. Solution: Only use ":packadd" with an optional "!".

" Vim filetype plugin file
" Language:	C++
" Maintainer:	Bram Moolenaar <Bram@vim.org>
" Last Change:	2001 Jan 15

" Only do this when not done yet for this buffer
if exists("b:did_ftplugin")
  finish
endif

" Behaves just like C
runtime! ftplugin/c.vim ftplugin/c_*.vim ftplugin/c/*.vim