Description:
In vimfiles/archlinux.vim, the line
silent !install -d -m 700 ~/.vim/swap/ 2>&1 > /dev/null
causes vim to improperly clean up after itself after exit in xterm (and every other terminal emulator I have tried). When vim exits, the cursor jumps to the bottom of the screen, leaving extraneous blank lines.

This also happens with silent !true, so the issue isn't related to the specific command used.

Additional info:
* package version: 8.0.1531-1

Steps to reproduce:
- Open a new instance of xterm (or one where the cursor has not yet reached the bottom of the screen)
- Run vim +q
- Observe the blank lines that fill the screen between the two shell prompts.

Steps to produce desired behavior:
- Open new instance of xterm
- Run vim --clean +q (or remove offending line from archlinux.vim)
- Observe no blank lines between the prompts