Regexp + spaces PG 9.1

Hi guys,

I've got a column which stores the file name on it, the column is character
varying(255). I'm selecting that value in a CTE query; basically:

test1 AS (

SELECT

regexp_matches(name, '((main|medium).name/\d+.\d+)') as filename,

*

from test1;

)

select

filename[1]

from test1

Example here: http://sqlfiddle.com/#!15/5f4f0/4

As you can see on the example:

- if the file is a image (jpg), then it will have 2 variations
(main|medium).
- If the file is a pdf, then it will only have 1 variation (main).

I basically need a regexp_matches expression that only gets me the file
name, after the main.name/ for example.

On the example I gave there are 2 problems:

1. I can only get the jpg file name
2. I don't get only the file name but the rest as well, which is not
what I need

How to do that?

Thanks!
Patrick