[Rpm-maint] [rpm-software-management/rpm] RFE: Handle disttag (#589)

[Jeff Johnson]

And to be ultra pedantic for parsing a pathological string that has missing N, E, V, and A but explicit R and D, there would need to be two dashes in front of "release:disttag" from the rules I just described:

rpm --query -- --R:D

Yes this is a pathological corner case that assumes that missing/unspecified values are interpreted as matching any value.

But I can definitely foresee a need to query all packages with a given DistTag which would become

Rpm --query -- --:D

The ugly syntax can be hidden in various ways: what is important is that the underlying parser is fed a well formed unambiguous query string which can be matched against existing NEVRDA package identifiers with possible missing values to retrieve a set of packages of interest.

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