A little while ago, Basant Kukreja published mod_sed under the Apache license. He's now also written a blog entry that could become the basis for a tutorial into how mod_sed is much more than a mere string-or-regexp search-and-replace filter:
http://blogs.sun.com/basant/entry/using_mod_sed_to_filter I happen to know that Basant and Sun will be happy for us to adopt mod_sed, and I think that with that blog entry reworked into a howto doc, it'll add real value to httpd. Any thoughts on dropping it in to trunk, with a view to including it as standard in 2.4 in due course? -- Nick Kew Application Development with Apache - the Apache Modules Book http://www.apachetutor.org/
