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1. SLF4J
2. SLF4J-529

Platform Logging bridge should use MessageFormat but it's using String.format

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Details

• Type: Bug
• Resolution: Fixed
• Priority: Major
• Affects Version/s: 2.0.0-alpha5

Description

java.lang.System.Logger.log is specified to accept the message format of MessageFormat. However, the current SLF4JPlatformLogger implementation uses String.format instead of MessageFormat. As a result, the current implementation cannot format the message correctly.

Expected and actual behavior

LoggerFinder finder = System.LoggerFinder.getLoggerFinder(); Logger systemLogger = finder.getLogger("smoke", null); systemLogger.log(Level.INFO, "hello {0}", "world");

Expected output:

Actual output:

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