Mathias Bynens replied to Nova Patch: >> [...] Based on my past research for Unicode Regular Expression >> Engines at IUC38, I suspect that there might not be any regex engine >> that actually supports syntax like Script=IsGreek as described in >> UAX44-LM3! If anybody knows otherwise, I’d love to hear about it. > > This seems like a cut-and-dried case of reality not matching the > specification, which is not helpful in any way. The sensible thing to > do is to update the specification accordingly, as proposed.
Rather than changing the spec based on anecdotal evidence, an even more sensible thing to do would be to make this a Public Review Issue: "We're considering simplifying this matching rule and need to know if any implementers rely on the part we're planning to delete. Please send feedback by $date." There must have been some basis for including the "is" case in the first place. It seems irresponsible to assume now that nobody anywhere needs it. -- Doug Ewell | http://ewellic.org | Thornton, CO 🇺🇸
