[Dovecot] Search for substring in header?

[Michael M Slusarz]

Quoting Dave Abrahams <dave at boostpro.com>:

> on Mon Oct 15 2012, Dave Abrahams <dave-AT-boostpro.com> wrote:
>
>> on Sun Oct 14 2012, Michael M Slusarz <slusarz-AT-curecanti.org> wrote:
>>
>>> Quoting Dave Abrahams <dave at boostpro.com>:
>>>
>>>> Hi,
>>>>
>>>> According to the IMAP spec (http://tools.ietf.org/html/rfc2060#page-37),
>>>> if I do a search for "TO isocpp.org" it should find all the messages
>>>> whose To: field contains the string "isocpp.org", but dovecot is
>>>> returning me an empty list.  However, a search for "TO tm at isocpp.org"
>>>> produces a long list of messages.  What am I doing wrong?
>>>
>>> First, you referenced the wrong RFC - RFC 2060 has been obsoleted  
>>> by RFC 3501.
>>
>> Thanks for pointing me to the right one.
>>
>>> Second, your assumption is correct - TO should do a substring search.
>>> But this works fine for me (using version 2.1.10).
>>
>> Using 2.1.6 and 2.1.9 built --with-clucene --with-libstemmer, I get the
>> same empty result with either of these two commands:
>>
>>   UID SEARCH TO isocpp.org
>>
>>   UID SEARCH TO "isocpp.org"
>>
>> Am I formatting the command wrongly?
>
> Incidentally, if I turn of fts_lucene and turn on fts_squat, I get the
> same result.

Lucene for sure does not support subtext searching.  Squat used to...  
but IIRC things may have changed for v2.1.  Try the wiki.

michael