On Oct 20, 2007, at 4:59 PM, Vincent Bray wrote:
Hullo, I'm attempting to document this module but can't figure out what the f (flatten) flag does (bucket brigade munging makes my eyes cross). Any clues?
Say you are looking for 'foo' and have a bucket that contains 'jimfoojag'. The fast way to handle this would be to split off 3 buckets from this, one containing 'jim', the other containing 'jag' and the middle one that contains the substitute for 'foo' (say it's 'bar'). The rub is that the pattern matching looks at buckets only, so you wouldn't see a full bucket that contains 'jimbarjag' and so if you had a search for 'mbarj', it would be missed using the "fast way". In the slow way (flattening), instead of creating the 3 buckets, you go ahead and smash them all together resulting in the single bucket that now contains 'jimbarjag'. Now the search for 'mbarj' would succeed.
Here's a start anyway: http://people.apache.org/~noodl/mod_substitute.xml -- noodl
