Fix mouse can't select text with vi in Debian 9

Just create the file ~/.vimrc with the content set "mouse=":

Insert in ~/.vimrc:

vi ~/.vimrc
set mouse=

Make it take effect

source ~/.vimrc

You can now select text with the mouse in Debian 9.

From: https://unix.stackexchange.com/questions/318824/vim-cutpaste-not-working-in-stretch-debian-9/387776#387776