[Rpm-maint] [rpm-software-management/rpm] RFE: handle lists/tuples within macro expansions (#503)

[Jeff Johnson]

There are three archetypal forms in computer languages: scalars, lists/tuples/arrays, and maps.

RPM macros only implement scalar key:value assignments. This RFE is a suggested extension to permit macro values to add syntax to expand a stack into a list with a common separator.

The suggested syntax uses a form like %{@F:S} where F is a stack of items created using %define, and S is a separator (like space or comma) to be used between items.

The expansion output should be FIFO (I.e. reversed stack pop order) like (digits represent the order of definition)

1S2S3S...N

Code supplied on request.

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