For me the simplest approach to configuration files is to use perl syntax - and than directly build the datastructures by an eval. The substitution problem would be solved by an asignemnt in the built datastructure - something like this: 
 $config->{general-schedule} = $general-schedule-config

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Where the $general-schedule-config was built by an eval as well.

In reply to Re: Substituting tokens into configuration values by zby
in thread Substituting tokens into configuration values by dbush

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