Regression: `String.data(using: .iso2022JP)` unexpectedly returns `nil` on non-Darwin. - Githubissues

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Regression: `String.data(using: .iso2022JP)` unexpectedly returns `nil` on non-Darwin. #1014

Open YOCKOW opened 2 weeks ago

YOCKOW commented 2 weeks ago

Given the following code:

import Foundation
print("Hello, world!".data(using: .iso2022JP) as Any)

Results are:

OS	Swift	Result
macOS	5.10	"Optional(13 bytes)"
Ubuntu	5.10	"Optional(13 bytes)"
macOS	6.0	"Optional(13 bytes)"
Ubuntu	6.0	"nil"

This is regression from Swift 6 on Linux. Note that ISO-2022-JP is often used for MIME(Email) in Japan.

Relates to: https://github.com/swiftlang/swift-foundation/issues/925