I am using the RollingFileAppender and the Size rollingStyle. By default it creates backup files with a numbered extension, this drives me nuts. Is it possible to change it so it always uses a defined extension (say .txt or .log) and inserts the number as part of the file name. For example:

myapp.log
myapp.1.log
myapp.2.log
myapp.3.log

Here is my current configuration:

        <appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
        <file value="myapp.log"/>
        <appendToFile value="true"/>
        <rollingStyle value="Size"/>
        <maximumFileSize value="1MB"/>
        <maxSizeRollBackups value="10"/>
        <staticLogFileName value="true"/>
        <layout type="log4net.Layout.PatternLayout">
            <conversionPattern value="%date{ISO8601} [%3thread] %-5level %logger{3}: %message%newline" />
        </layout>
    </appender>