websearch_to_tsquery() and apostrophe inside double quotes

Hi all,

I am a little confused about what us being generated by websearch_to_tsquery() in the case of an apostrophe inside double quotes.

Here is an example of searching for a name containing an apostrophe.

The following works as expected:

select to_tsvector('peter o''toole') @@ websearch_to_tsquery('peter o''toole');
?column?
----------
t
(1 row)

When the name is in double quotes, the search fails:

select to_tsvector('peter o''toole') @@ websearch_to_tsquery('"peter o''toole"');
?column?
----------
f
(1 row)

In the first case, websearch_to_tsquery() returns:

select websearch_to_tsquery('peter o''toole');
websearch_to_tsquery
------------------------
'peter' & 'o' & 'tool'
(1 row)

which makes sense to me.

In the second case websearch_to_tsquery() returns something that I can't quite understand:

select websearch_to_tsquery('"peter o''toole"');
websearch_to_tsquery
------------------------------
'peter' <-> ( 'o' & 'tool' )
(1 row)

I am not quite sure what text this will actually match?

Best regards,

Alastair