> On 25 Jan 2017, Dave Abrahams wrote: > >> on Tue Jan 24 2017, Ben Rimmington wrote: >> >> Could you include the latest ICU alongside the Swift standard library? > > To what end?
When iOS 10 and macOS 10.12 were released (2016-09-13), their "libicucore" was based on ICU 57 (2016-03-23), with support for Unicode 8 (2015-06-17). They were using a Unicode standard from 15 months ago, instead of Unicode 9 from 3 months ago (2016-06-21). This can only be fixed by changing the ICU schedule. However, the Swift 4 libraries could include ICU 58 now. They'd have Unicode 9 conformance during implementation, and also when deployed back to iOS 7 or macOS 10.9. That's assuming you need ICU 58 for Unicode 9 conformance: <https://github.com/apple/swift/blob/master/docs/StringManifesto.md#unicode-9-conformance> > If Swift always uses the latest ICU it will sometimes behave > inconsistently with Foundation. If you want to use the latest ICU > yourself, you can always put it in your app bundle. I think Linux apps can bundle ICU for swift-corelibs-foundation. But a Swift 4 app deployed to iOS 7 or macOS 10.9 will be using ICU 51 with Unicode 6.2 support. -- Ben _______________________________________________ swift-evolution mailing list swift-evolution@swift.org https://lists.swift.org/mailman/listinfo/swift-evolution