Re: have you feel anything when you read this ?

Alvaro Herrera wrote:
> Eugene E. wrote:
>
>>Alvaro Herrera wrote:
>
>
>>>text is not bytea.
>>
>>source says:
>>
>>typedef text varlena;
>>typedef bytea varlena;
>
>
> This means that as far as the C type system is concerned, both bytea and
> text are treated as "struct varlena". It doesn't mean that they are
> processed by the same input/output functions, which they aren't.
>
> NUL bytes are preserved in bytea, and used as terminators in text. I
> don't find this surprising at all, do you?

I do found surprising it.
since both (text and bytea) I/O functions has CSTRING arguments and
resut type. - this only means a user should perform some unescaping on
the bytea value he got. THE SAME THING he should do with a string value
if he decide to use type text and to escape NUL-bytes before input.
then what a difference bitween those types except strlen() ?