commit https://github.com/vim/vim/commit/85b11769ab507c7df93f319fd964fa579701b76b Author: Bram Moolenaar <Bram@vim.org> Date: Sat Feb 27 18:13:23 2016 +0100 patch 7.4.1433 Problem: The Sniff interface is no longer useful, the tool has not been available for may years. Solution: Delete the Sniff interface and related code.

" Vim filetype plugin file
" Language:    SystemVerilog
" Maintainer:  kocha <kocha.lsifrontend@gmail.com>
" Last Change: 12-Aug-2013. 

if exists("b:did_ftplugin")
  finish
endif

" Behaves just like Verilog
runtime! ftplugin/verilog.vim