Structured logging with emoji or objectdescription

Question

When running the code below, only the first entry gets logged. Structured logging seems not to work when there are emoticons or object descriptions in the message. Is this by design?

 let logger = Logger(subsystem: "TestSystem", category: "TestCategory")

        logger.log("👍") // Result = 👍
        
        let someEmoji:String = "👎"
        logger.log("\(someEmoji)") // Result = empty log line
        
        let someObjectDescription:String = String(describing:self)
        logger.log("\(someObjectDescription)") // Result = empty log line

754

Posted by

TheMisfit68

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Answer 1

Tested this again in the final release of Xcode 15 and it all works now as expected

Posted by

TheMisfit68

Yay!

—
eskimo

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Answer 2

It seems related to the privacy modifier

Posted by

TheMisfit

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Answer 3

How are you testing this? Your use of the wwdc2023-10226 tag suggests that you’re using Xcode 15 beta, so I ran something like your test here in my office and I didn’t see a problem. Specifically:

Using Xcode 15.0b6 on macOS 13.5, I created a new test project and wired up a button to the code below:

import Foundation
import os.log

func test() {
    // subsystem:com.example.Test735869
    let logger = Logger(subsystem: "com.example.Test735869", category: "tool")
    logger.log("thumbs up: 👍")
    let someEmoji = "👎"
    logger.log("thumbs down: \(someEmoji)")
}

I ran the app on the iOS 17.0 beta simulator.
I clicked my button.
Xcode’s console (View > Debug Area > Activate Console) shows both log lines.

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

Posted by

eskimo

I tried what you did and indeed both log lines show up. However, if you create the exact same thing in a Mac app instead of the iOS simulator only the first line is displayed.

—
TheMisfit68

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Answer 4

Tested this again in the final release of Xcode 15 and it all works now as expected

Posted by

TheMisfit68

Yay!

—
eskimo

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Structured logging with emoji or objectdescription

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