patch 8.2.1030: reducing size of a terminal window may cause a crash Commit: https://github.com/vim/vim/commit/da58134eedf43ae4b9013c93ecbdf55e4da4b8a3 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Jun 21 17:57:32 2020 +0200 patch 8.2.1030: reducing size of a terminal window may cause a crash Problem: Reducing size of a terminal window may cause a crash. Solution: Make sure the row and column don't become negative. (closes https://github.com/vim/vim/issues/6273)

" Vim filetype plugin file
" Language:	Diff
" Maintainer:	Bram Moolenaar <Bram@vim.org>
" Last Change:	2005 Jul 27

" Only do this when not done yet for this buffer
if exists("b:did_ftplugin")
  finish
endif
let b:did_ftplugin = 1

let b:undo_ftplugin = "setl modeline<"

" Don't use modelines in a diff, they apply to the diffed file
setlocal nomodeline