[LOG4J2-1169] PatternLayout: Possible variable substitution in equals substitution parameter

• Type: Improvement
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 2.4.1
• Fix Version/s: 2.6
• Component/s: Pattern Converters
• Assignee: Matt Sicker
• Reporter: Gerald Kritzinger
• Created: 22/Oct/15 06:18
• Updated: 09/Mar/16 20:15
• Resolved: 09/Mar/16 20:15

Description

Let the substitution parameter of the equals function also substitute variables.
E.g.:

%equals{%marker}{}{%msg} 

should print the message if the marker is empty, currently "%msg" is appended.