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() ?