patch 8.2.0833: mapping <C-bslash> doesn't work in the GUI Commit: https://github.com/vim/vim/commit/ca5bc746073b6fd4b7651bc02f7a18b1b43bd4ca Author: Bram Moolenaar <Bram@vim.org> Date: Wed May 27 22:08:34 2020 +0200 patch 8.2.0833: mapping <C-bslash> doesn't work in the GUI Problem: Mapping <C-bslash> doesn't work in the GUI. Solution: Reset seenModifyOtherKeys when starting the GUI. (closes https://github.com/vim/vim/issues/6150)

" 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<"