gistfile1.txt

# Load the system properties
system=[method://java.lang.System.getProperties()]

# Define the environment and language based on the system properties, 
# with sensible defaults.
#  (these likely came in as -D options on the command line)
lang=${system->lang|english}
env=${system->env|dev}

# Include language based properties
languages={
   english=[english.properties]
   spanish=[spanish.properties]
}

# Include environment specific properties
environments={
   dev=[development.properties]
   test=[test.properties]
   prod=[prod.properties]
}

current.lang=${languages->${lang}}
current.env=${environment->${env}}

hello.world="${current.lang->hello} ${current.lang->world}"

# Allow for possible local overrides
[/etc/local.properties|failonerror=false]