BUG #11021: How to extract text value from json scalar?

The following bug has been logged on the website:

Bug reference:      11021
Logged by:          Alexey
Email address:      kolmyk@hotmail.com
PostgreSQL version: 9.3.4
Operating system:   Windows 8.0
Description:

I'm using json_each function for iterate keys and values in my function, but
string values contains quotes.
I can use json_each_text, but sometimes I need to json value.
Can I extract text value from json scalar?

Now I'm using this alternative script:
('[' || value ||']')::json->>0

Example:
select key, value, ('[' || value ||']')::json->>0 from
json_each('{"a":123,"b":"first"}');