modules for optimizing regular expressions
DescriptionThis contains two modules, Regexp::List and Regexp::Optimizer. Regexp::List offers a method which turns a list of words into an optimized regular expression which matches all words therein. The optimized regular expression is much more efficient than a simple-minded '|'-concatenation. Regexp:Optimizer factors out common suffices/prefices in regular expressions (trie optimization). Currently, the user has to optimize "foo|far" and "foo|goo" into "f(?:oo|ar)" and "[fg]oo" by hand; this module does it automatically.
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