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Many limitations on parser size have been removed. A GLR parser output is available, which makes it possible to parse any context free grammar, included ambiguous grammars. This typically allows one to parse "naturally'' contrived grammars such as C++'s. The machinery has been revamped to ease the creation of new kinds of parsers.
Filename clashes are now detected. A warning is
now given when a rule is missing an ';' at the
end. DJGPP support was added. Test suite
portability problems were fixed.