patch 8.1.1015: quickfix buffer shows up in list, can't get buffer number commit https://github.com/vim/vim/commit/647e24ba3dbf7ff448aa471b1a659a18267ae056 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Mar 17 16:39:46 2019 +0100 patch 8.1.1015: quickfix buffer shows up in list, can't get buffer number Problem: Quickfix buffer shows up in list, can't get buffer number. Solution: Make the quickfix buffer unlisted when the quickfix window is closed. get the quickfix buffer number with getqflist(). (Yegappan Lakshmanan, closes #4113)

" Vim filetype plugin file
" Language:	groovy
" Maintainer:	Justin M. Keyes <justinkz@gmail.com>
" Last Change:	2016 May 22

if exists('b:did_ftplugin')
  finish
endif
let b:did_ftplugin = 1

let s:cpo_save = &cpo
set cpo-=C

let b:undo_ftplugin = 'setlocal commentstring<'

setlocal commentstring=//%s

let &cpo = s:cpo_save
unlet s:cpo_save