Perl verson: 5.12.3
Operating System: Mac OS X 10.7.3 (Lion) Darwin 11.3.0 Darwin Kernel Version 11.3.0 x86_64
It appears that the maintainers of Parse::RecDescent did a Very Bad Thing and changed the API by adding a new argument to _parserepeat() in the middle of existing arguments (rather than the end, which would have been much more Perlish). The attached patch for CSS/Parse/CompiledGrammar.pm appears to resolve the issue.
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