DatePattern and the final rolled file name

[BPetro]

What I read seems to indicate that added characters to the datePattern will be just put into the final name without altering the periodicity of the rolling schedule. But adding .log doesn't seem to work... I can create my own version like MyDailyRollingFileAppender, but if its already there I don't want to go messing around with code. Any suggestions? What I want to accomplish is for the final rolled file to continue to end in ".log" instead of ending in a date. This could look like either:
instead of server.log.2008-11-04
we want:
server.log.2008-11-04.log
or
2008-11-04.server.log

So, other than copying and altering another named version of DailyRollingFileAppender any thoughts or ideas?