Consider using Java RegEx

[bockensm]

Would it be acceptable to replace the built-in regular expression functions with something like this?
https://github.com/bennadel/ColdFusion-JRegEx

CFML built-in regular expressions can't handle valid regular expressions that contain a negative lookbehind. The library linked above is more flexible and allows the provided patterns to be more creative.

[bdw429s]

So long as the feature is still backwards compatible with any existing regex, I'm open to it. keep in mind, the codechecker-core library needs to be compat with Adobe CF as well since it is included in the Coldbox app version of Codechecker which can be run anywhere.

[bockensm]

models/QueryParamScanner/jre-utils.cfc could probably be used instead. It has a getNoCase function that hops in to Java. I have this running locally at the moment, but my implementation is a bit slower than I'd like.