patch 8.1.1447: not allowed to create an empty popup commit https://github.com/vim/vim/commit/7b29dd850752b975baef47b66c590f5e978ad847 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Jun 2 13:22:11 2019 +0200 patch 8.1.1447: not allowed to create an empty popup Problem: Not allowed to create an empty popup. Solution: Remove restriction that there is some text. (closes https://github.com/vim/vim/issues/4470)

" Vim compiler file
" Compiler:	javac
" Maintainer:	Doug Kearns <dougkearns@gmail.com>
" Last Change:	2004 Nov 27

if exists("current_compiler")
  finish
endif
let current_compiler = "javac"

if exists(":CompilerSet") != 2		" older Vim always used :setlocal
  command -nargs=* CompilerSet setlocal <args>
endif

CompilerSet makeprg=javac

CompilerSet errorformat=%E%f:%l:\ %m,%-Z%p^,%-C%.%#,%-G%.%#