vim/runtime/ftplugin/jproperties.vim

" Vim filetype plugin
" Language:	Java properties file
" Maintainer:	None
" Last Change:	2019 Dec 01

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

setlocal formatoptions-=t
setlocal comments=:#,:!
setlocal commentstring=#\ %s

let b:undo_ftplugin = "setl cms< com< fo<"