[As reported on the user-list, where I was requested to make a bug report]

This groovy-file ...:

import ch.qos.logback.classic.PatternLayout
import ch.qos.logback.core.ConsoleAppender
import ch.qos.logback.core.encoder.LayoutWrappingEncoder

appender("STDOUT", ConsoleAppender) {
encoder(LayoutWrappingEncoder) {
layout(PatternLayout) {
pattern = "%d

{HH:mm:ss.SSS}

[%thread] %-5level %logger

{55}

.%M.%L - %msg%n"
}
}
}

root(ALL, ["STDOUT"])

... apparently crashes the configuration as such:

Failed to instantiate [ch.qos.logback.classic.LoggerContext]
Reported exception:
groovy.lang.MissingPropertyException: No such property: ALL for class: Script1
at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.unwrap(ScriptBytecodeAdapter.java:50)
at org.codehaus.groovy.runtime.callsite.PogoGetPropertySite.getProperty(PogoGetPropertySite.java:49)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGroovyObjectGetProperty(AbstractCallSite.java:231)
at Script1.run(Script1.groovy:13)
at Script1$run.call(Unknown Source)
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:42)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:108)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:112)
at ch.qos.logback.classic.gaffer.GafferConfigurator.run(GafferConfigurator.groovy:59)
at ch.qos.logback.classic.gaffer.GafferConfigurator$run.callCurrent(Unknown Source)
at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:46)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:133)
at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:141)
at ch.qos.logback.classic.gaffer.GafferConfigurator.run(GafferConfigurator.groovy:37)
at ch.qos.logback.classic.gaffer.GafferUtil.runGafferConfiguratorOn(GafferUtil.java:44)
at ch.qos.logback.classic.util.ContextInitializer.configureByResource(ContextInitializer.java:67)
at ch.qos.logback.classic.util.ContextInitializer.autoConfig(ContextInitializer.java:150)
at org.slf4j.impl.StaticLoggerBinder.init(StaticLoggerBinder.java:85)
at org.slf4j.impl.StaticLoggerBinder.<clinit>(StaticLoggerBinder.java:55)
at org.slf4j.LoggerFactory.bind(LoggerFactory.java:128)
at org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:108)
at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:279)
at XYZ.doLogConfig(XYZ.java:40)
at XYZ.main(XYZ:169)

The problem is obviously, as the error message states, the not-defined property "ALL".
The problem I am reporting is that this isn't caught.

The console-dump happens in the "We should never get here" catch block below:

void init() {
try {
try

{ new ContextInitializer(defaultLoggerContext).autoConfig(); }

catch (JoranException je)

{ Util.report("Failed to auto configure default logger context", je); }

StatusPrinter.printInCaseOfErrorsOrWarnings(defaultLoggerContext);
contextSelectorBinder.init(defaultLoggerContext, KEY);
initialized = true;
} catch (Throwable t)

{ // we should never get here Util.report("Failed to instantiate [" + LoggerContext.class.getName() + "]", t); }

}

Notice that the StatusManager does not know that the config failed:

13:32:07,643 |-INFO in ch.qos.logback.classic.LoggerContext[Emma logcontext] - Found resource [logback.groovy] at file:/XYZ/target/classes/logback.groovy
13:32:08,807 |-INFO in ch.qos.logback.classic.gaffer.ConfigurationDelegate@2111e072 - About to instantiate appender of type [ch.qos.logback.core.ConsoleAppender]
13:32:08,809 |-INFO in ch.qos.logback.classic.gaffer.ConfigurationDelegate@2111e072 - Naming appender as [STDOUT]