I need some piece of advice how to implement join in OVAL for variables if some of them are empty .
I'm looking at the existing example from master which uses <concat>-<split>. However this code doesn't work as expected for empty variable var_rfg_include_config_regex in <concat> - returned result "no value", while expected would be "%^/etc/rsyslog.conf$":
Note: UniqueFunctionType looks more applicable here, but it doesn't work as well with the same reason - returned result is "no value" when one of variables is empty.
Can any approach be suggested to avoid getting "no value" and return expected result for sample var_rfg_all_log_files_as_string_regex variable (with joined values from defined only variables/objects)?
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