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 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