non-intuitive metadata search interpretation

["Enrico Minack" <minack l3s de>]

Dear all,

while working on the metadata search feature of beagle (like 
title:something) we recognized that beagle interprets phrase queries in a 
non-intuitive way. It conserns usage of quotes. When you perform
   "title:communication protocol"
it does look for titles "communication protocol", which is right.

When you perform
   title:"communication protocol"
which should (intuitively) do the same, it does look for titles 
"communication" and for "protocol" as ordinary keyword.


See the --debug output of beagled for these two queries:

Debug: Parsed query 'title:communication protocol' as prop 
query:key=dc:title, value=communication protocol and property type=Text

Debug: Parsed query 'title:communication' as prop query:key=dc:title, 
value=communication and property type=Text
Debug: Parsed query 'protocol"' as text_query


Is this an known and open issue, a bug, or a feature?

Regards,
Enrico M.