[logback-user] Janino not found after logback 0.9.27

[Joel Uckelman]

I have this in my logback.xml:

<configuration>
  <contextName>${VASSAL.id:-0}</contextName>

  <appender name="FILE" class="ch.qos.logback.core.FileAppender">
    <if condition='property("os.name").toLowerCase().startsWith("windows")'>
      <then>
        <file>${user.home}/VASSAL/errorLog</file>
      </then>
      <else>
        <file>${user.home}/.VASSAL/errorLog</file>
      </else>
    </if>
    <encoder>
      <pattern>%date [%contextName-%thread] %-5level %logger - %msg%n</pattern>
    </encoder>
    <prudent>true</prudent>
  </appender>

  <root level="ALL">
    <appender-ref ref="FILE" />
  </root>
</configuration>

It works properly with logback 0.9.27 and earlier. With every version
after 0.9.27, I get the following output to stderr and no logfile is
written:

22:07:09,571 |-INFO in ch.qos.logback.classic.LoggerContext[0] - Could NOT find resource [logback.groovy]
22:07:09,572 |-INFO in ch.qos.logback.classic.LoggerContext[0] - Could NOT find resource [logback-test.xml]
22:07:09,572 |-INFO in ch.qos.logback.classic.LoggerContext[0] - Found resource [logback.xml] at [jar:file:/home/uckelman/projects/VASSAL/VASSAL-src/lib/Vengine.jar!/logback.xml]
22:07:09,590 |-INFO in ch.qos.logback.core.joran.spi.ConfigurationWatchList at 7f2ad19e - URL [jar:file:/home/uckelman/projects/VASSAL/VASSAL-src/lib/Vengine.jar!/logback.xml] is not of type file
22:07:09,784 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - debug attribute not set
22:07:09,800 |-INFO in ch.qos.logback.classic.joran.action.ContextNameAction - Setting logger context name as [0]
22:07:09,800 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type [ch.qos.logback.core.FileAppender]
22:07:09,803 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as [FILE]
22:07:09,805 |-ERROR in ch.qos.logback.core.joran.conditional.IfAction - Could not find Janino library on the class path. Skipping conditional processing.
22:07:09,824 |-ERROR in ch.qos.logback.core.joran.spi.Interpreter at 16:14 - no applicable action for [encoder], current pattern is [[configuration][appender][encoder]]
22:07:09,824 |-ERROR in ch.qos.logback.core.joran.spi.Interpreter at 17:16 - no applicable action for [pattern], current pattern is [[configuration][appender][encoder][pattern]]
22:07:09,825 |-ERROR in ch.qos.logback.core.joran.spi.Interpreter at 19:14 - no applicable action for [prudent], current pattern is [[configuration][appender][prudent]]
22:07:09,825 |-ERROR in ch.qos.logback.core.FileAppender[FILE] - "File" property not set for appender named [FILE].
22:07:09,825 |-WARN in ch.qos.logback.core.joran.action.AppenderAction - The object at the of the stack is not the appender named [FILE] pushed earlier.
22:07:09,825 |-INFO in ch.qos.logback.classic.joran.action.RootLoggerAction - Setting level of ROOT logger to ALL
22:07:09,825 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [FILE] to Logger[ROOT]
22:07:09,828 |-INFO in ch.qos.logback.classic.joran.JoranConfigurator at 54281d4b - Registering current configuration as safe fallback point

Specifically, I'm concerned about the the first error, which claims that
Janino can't be found in the classpath, because I'm certain that
janino.jar is in the classpath (and logback 0.9.27 seems to find it).

What changed in 0.9.28 that's causing this? Is it something that I need
to adjust in my own code, or is this a bug in logback?

-- 
J.