How to get char indices from text parser | tsvector?

[Roman Gurinovich <roman.gurinovich@xxxxxxxxxx>]

Hi all, 

is there any possibility to get char "coordinates", not only token "coordinates" from tsvector or, basically, text parser? Like in Elasticsearch 

GET _analyze?text=This fox is brown&analyzer=english
{
"tokens": [
{
  "token": "fox",
  "start_offset": 5,
  "end_offset": 8,
  "type": "",
  "position": 1
}

while in PostgreSQL 

SELECT to_tsvector('This fox is brown')

'brown':4 'fox':2 'is':3 'this':1

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Best Regards,
Roman Gurinovich