Out-of-tree bindings:
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Ruby: See https://github.com/ged/linkparser/
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Perl: See http://search.cpan.org/~dbrian/Lingua-LinkParser/
Note: these out-of-tree perl bindings are better, cleaner, etc. than the in-tree bindings here! Use those, not these!
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Lisp: See also https://github.com/wvxvw/cl-link-grammar