Hi Zhe-Xi,

In 2002 Scott A. Crosby implemented full text search for Squeak. Unfortunately it was never integrated and Scott left the community. See the following post:
http://lists.squeakfoundation.org/pipermail/squeak-dev/2002-April/037964.html

If you search the mailing list for posts from around that time you will probably find more information.

The code seems to be on SqueakMap:
http://map.squeak.org/package/6e65267d-53e0-46b0-a4dd-7cb349e18f23
and on SqueakSource:
http://www.squeaksource.com/@Xjs1PWixYhd_s5Y1/nsS7RXdi

Most likely some work would be needed in order to make it run.

Cheers,
Bernhard

Am 30.12.2010 um 20:37 schrieb Zhe-Xi Lim:
> I am planning to implement a search engine just like Google to ease the
> searching of smalltalk codes in Squeak. The current available search in
> Squeak has drawbacks in the sense that it goes by the conventional way of
> information retrieval. I would like to index all the classes, comments and
> methods in Squeak image to provide an intelligent, faster and efficient way
> of searching facility in Squeak. This will also help in promoting codes
> re-usability in the development of Smalltalk.
> 
> And then I would like to know if there is a search engine or information
> retrieval algorithms written in Smalltalk that already made available. If
> there is such a routine in Smalltalk, could anyone show it to me so that
> redundant work can be avoided?