Hi Ian,
I don’t think Max has put up that PR against the swift-corelibs-foundation
implementation, but we should.
- Tony
> On Aug 9, 2017, at 9:04 AM, Ian Partridge via swift-corelibs-dev
> <swift-corelibs-dev@swift.org> wrote:
>
> I've noticed this current difference in behaviour.
>
> Darwin:
>
> $ swift
> Welcome to Apple Swift version 4.0-dev (LLVM 2dedb62a0b, Clang b9d76a314c,
> Swift 6b4756bd93). Type :help for assistance.
> 1> import Foundation
> 2> "abc".range(of: "a")!.lowerBound..<"abc".range(of: "a")!.upperBound
> $R0: Range<String.Index> = {
> lowerBound = {
> _compoundOffset = 0
> _cache = utf16
> }
> upperBound = {
> _compoundOffset = 4
> _cache = utf16
> }
> }
>
> Linux:
>
> $ swift
> Welcome to Swift version 4.0-dev (LLVM 2dedb62a0b, Clang b9d76a314c, Swift
> 6b4756bd93). Type :help for assistance.
> 1> import Foundation
> 2> "abc".range(of: "a")!.lowerBound..<"abc".range(of: "a")!.upperBound
> $R0: CountableRange<String.Index> = {
> lowerBound = {
> _compoundOffset = 0
> _cache = utf16
> }
> upperBound = {
> _compoundOffset = 4
> _cache = utf16
> }
> }
>
> I think this might be because some changes made in the overlay
> (NSStringAPI.swift) haven't been ported across to swift-corelibs-foundation:
>
> https://github.com/apple/swift/commit/5f1c3f702189f8197e297479d464dc454330be80
>
> <https://github.com/apple/swift/commit/5f1c3f702189f8197e297479d464dc454330be80>
>
> Is my suspicion right, and is there any work in progress to bring this into
> sync before Swift 4?
>
> --
> Ian Partridge
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