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From: Eric Niebler (eric_at_[hidden])
Date: 2004-12-28 12:13:59

Dave Gomboc wrote:
>> "The Hapy library would not exist if Spirit would generate correct
>>parsers by default..."
>>Whoa. Them's fightin' words!
> I believe the author is referring to incomplete backtracking (not
> backtracking past an accepted token when there's a failure later on). It's
> something the Spirit gurus have taken into consideration for Spirit 2,
> Dave

xpressive (in the boost sandbox) is a Spirit-like regex/parser engine
that has exhaustive backtracking. I have offered to share what I have
learned while implementing this beast to Joel. We plan to collaborate to
build Spirit-2 and xpressive on a common core, so that Spirit-2 can have
(optional?) exhaustive backtracking. That was the plan, at least.

Eric Niebler
Boost Consulting
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