[slf4j-dev] [JIRA] Updates for SLF4J-529: Platform Logging bridge should use MessageFormat but it's using String.format

[QOS.CH (JIRA)]

SLF4J / SLF4J-529 [Open]
Platform Logging bridge should use MessageFormat but it's using String.format

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View or comment on issue using this link
https://jira.qos.ch/browse/SLF4J-529

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 Issue created
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Taku Miyakawa created this issue on 22/Dec/21 2:11 PM
Summary:              Platform Logging bridge should use MessageFormat but it's using String.format
Issue Type:           Bug
Affects Versions:     2.0.0-alpha5
Assignee:             SLF4J developers list
Components:           Unspecified
Created:              22/Dec/21 2:11 PM
Environment:
  
   
Priority:             Major
Reporter:             Taku Miyakawa
External issue URL:   https://github.com/qos-ch/slf4j/pull/273
Description:
  [java.lang.System.Logger.log|https://docs.oracle.com/en/java/javase/17/docs/api/java.base/java/lang/System.Logger.html#log(java.lang.System.Logger.Level,java.lang.String,java.lang.Object...)] 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.
  
  h1. Expected and actual behavior
  
  {code:java}
  LoggerFinder finder = System.LoggerFinder.getLoggerFinder();
  Logger systemLogger = finder.getLogger("smoke", null);
  systemLogger.log(Level.INFO, "hello {0}", "world");
  {code}
   
  Expected output:
  
  {code}
  INFO smoke - hello world
  {code}
  
  Actual output:
  
  {code}
  INFO smoke - hello {0}
  {code}
   
  


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