[Zope] Query Keyword Index unexpected behavior

[Yuri]

>
>
> Dieter Maurer wrote:
>
>>>>>should return objects that have both "foo" AND "bar". In my case, no objects 
>>>>>with "bar", but with "foo" a lot. The expr above returns ALL objects with 
>>>>>"foo". Is it expected behavior?
>>>      
>>>
>>> 
>>> A really long standing bug...
>>    
>>
>
>Is there a collector entry for this?
>
>cheers,
>
>Chris
>

Dear Chris,

 this is an "already discussed issue" :)

http://www.dzug.org/mailinglisten/zope-org-zope/archive/2003/2003-12/1070709691550/index_html

> The ZCatalog treats an empty *string* in a special way to support[...]
"AND"[...]

I've solved it in /PluginIndexes/common/util.py. When the param is a record,
around line 95, I've added:

if keys == ['']: keys = None

Is it correct? Seems to work with all indexes I've and KeywordIndexes, which


works also with AND as operator.

---

 Note: you also have to use lines to use the KeywordIndex:

<textarea name="COLL:lines"></textarea>

 That was my solution.

 I think the "ManagableIndex" with the KeywordIndex replacement should 
be added, maybe calling it KeywordIndexNG :)