Hi,
It's nice to have apachesolr_attachments if you want to index documents with Tika, but there are many other ways one might process attached documents. For example, a document could be passed through a XSLT processing pipeline before being sent to Solr, or passed to a specific request handler to commence a complicated processing chain, and so forth. Tika extraction certainly doesn't exhaust what one might want to do with attachments.
Maybe a module like "apachesolr_attachments_delegate" could plug-in and override the handling of certain attachments. I'm going to look into the code base now, not sure if suitable hooks exist already. For now, anyway, I'm just wondering, does anybody else out there have similar use cases? (And if so, what are you doing now?)
Edward