Description:

This module provides support for indexing a collection of documents, for
searching the collection, and displaying the sorted results, together with
contextual excerpts of the original document.

Documents
As far as this module is concerned, a _document_ is just a buffer of
plain text, together with a unique identifying number. The caller is
responsible for supplying unique numbers, and for converting the
original source (HTML, PDF, whatever) into plain text. Documents could
also contain more information (other fields like date, author, Dublin
Core, etc.), but this must be handled externally, in a database or any
other store. A candidate for storing metadata about documents could be
File::Tabular, which uses the same query parser.

Search syntax
Searching requests may include plain terms, "exact phrases", '+' or '-'
prefixes, boolean operators and parentheses. See the
Search::QueryParser manpage for details.