neovim/runtime/ftplugin/groovy.vim

" Vim filetype plugin file
" Language:	groovy
" Maintainer:	Justin M. Keyes <justinkz@gmail.com>
" Last Change:	2016 May 22
" 		2024 May 24 by Riley Bruins <ribru17@gmail.com> ('commentstring')

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