See the Search Attachments page on this site and the d.o. project page for details.
Thanks to lee20 for taking over this project.
Many users of search_attachments have requested being able to have search results from both node content and files in a single tab, as opposed to having separate tabs for each. Currently, any module that calls hook_search() and do_search(), both of which search_attachments does because it uses the core index tables, gets its search results placed in a separate tab.
In order to use search_attachments.module, you will need the appropriate helper apps on the same computer that Drupal is running on. These apps need to print out extracted text to standard output; currently, search_attachments cannot read extracted text that is saved to a file.
search_attachments version 5.x-4 and later comes with a built-in PHP helper for .txt and .csv files. No external helper is necessary.
I've updated the screencaps to show version 5.x-4. I'll be revising the other documentation over the next few days.
Update, 2008-02-21: Finally, the new version, 5.x-4-dev, that incorporates major changes to how this module works, is available. Follow the link to the right, in the updates block, for more info.
Update, 2008-01-03: I've updated the webfm.inc file included in the 2008-01-02 version of 5.x-3, to fix an error in the get_webfm_view_permission() function. If you use webfm, simply change the permission string from 'see webfm_attachments' to 'view webfm_attachments'. If you don't use webfm, you don't need to update the file. Thanks to Russell Keppner for reporting this.
Drupal user mroswell has created a screencast on installing search_attachments 5.x-4. Very cool!
Please note: This module is no longer supported. Drupal 6 users are encouraged to use Search Files, which incorporates much of the funcationality of Search Attachments.
[This is a duplicate of http://drupal.org/node/215646]
In order to make search_attachments respect access permissions better, I need to know what modules and/or access control configurations people are using to restrict access to nodes that files might be attached to.