Re: contrib promotion?

> tsearch2 is functionality that definitely should be in core eventually,
> but even Oleg still says it's not done.  Aside from the documentation
> issue, it's not clear that we've got a stable API for it.

Issues/TODO to move tsearch2 into core (by fast look)
* memory management. Dictionaries and tsearch2 itself cache a lot  of data in memory allocated by
malloc/palloc(TopContext)and  not all can be correctly freed by reset_tsearch() function.
 
* tsearch2 doesn't automatically reinit dictionary/configuration  after configuration changes
* Also, dictionary doesn't automatically recompile its files if they  were changed
* It will be good to store shared information (such as  dictionary's structure) in shared memory. For example,  ispell
dicttakes for compile its files about 1-5 seconds, sharing  should help
 
* I suppose, at least snowball stemmers should be compiled in  postgresql or compiled them into separate *.so libs.
Sources of all snowball's files take ~1Mb on disk. The goal is easier  configuration for end-user. Ispell dict's files
take1-3 Mb per  language.
 
* Now database can be created with another encoding then cluster was  initialized, but locale can't be changed.
Tsearch2depends on locale  because of lower/upper casing and isalpha(and somr another is*). So,  it's possible to get
unworkingtsearch2 configuration.
 


I'm going to vacation tomorrow for two week, so I havn't time to resolve 
that issues before feature freeze, sorry.