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From Robert Muir <>
Subject Re: Why release 3.0?
Date Tue, 17 Nov 2009 04:04:53 GMT
> That's an amazing number of changes, even when you ignore name changes.

DM, for your reference, I created another diff from 4.0->5.1, showing what
will happen with JDK7 here:

the problem is that as a search engine library, lucene cares about
properties and other semantics of characters that will change across
versions. so if we leave this up to the JDK, then when they upgrade unicode
it breaks back compat.

databases and other things don't much care about these properties and its
just utf8 bytes for the most part so it doesn't matter for them.

Robert Muir

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