Shell Auto-completion

I feel it is too late for me to realize that auto-completion using ESCAPE ESCAPE is actually came from a shell variable, $EDITOR

EDITOR=`which vi`; export EDITOR

Few servers gave me hard times on stty important function. So I:

echo "stty erase ^H
stty kill ^U
stty intr ^C
TERM=vt100
EDITOR=`which vi`
export TERM EDITOR" >> ~/.profile