ceki/logback — comment on commit c0d9b3b41b6cac04daa19d30f7a262ba81e8e319
File: logback-core/src/main/java/ch/qos/logback/core/rolling/SizeAndTimeBasedFNATP.java line 65
By trothwell:

Highest index search should return the highest of any CompressionMode: NONE, GZ, GZIP regardless of what is currently configured. No state is needed, just perform at init.