Auto-complete gives me more

[(रेवंत) Revant Nandgaonkar]

When ever i use [Tab] for auto-complete in bash, if the output is more
than the screen buffer, it automatically starts it under more

e.g.

$cd [tab][tab]
x/
y.log
z/
a.out
b/
c/
--More--

Can anyone tell me, How can I change this more to less so that it can be
<[tab][tab]> | less
instead of
<[tab][tab]> | more

$cd [tab][tab]
x/
y.log
z/
a.out
b/
c/
:_