array problem with double quotes

Hi,

Is there a way to create arrays without postgres adding double quotes when there are commas ?

select v1,v2 from (values ('co',array[['ab'],['ab,da']])) sub (v1,v2)

returns

"v1";"v2"

"co";"{{ab},{"ab,da"}}"

where I wanted

"co";"{{ab},{ab,da}}"

to match with the result of an array_agg which returns {ab,da}

In my case I then can't have {ab,da} @> {"ab,da"}

Thanks,

Olivier