[Rpm-maint] [rpm-software-management/rpm] RFE: don't prevealuate lua macros (#556)

[Jeff Johnson]

@jasontibbitts: %luamacro would need to be implemented as a co-routine because of rpm's embedded  lua interpreter has a persistent global environment.

That is very different than shell code, where a sub-shell inherits but cannot change its parent's environment. With rpm+lua, all lua invocations run in the same globally persistent environment.

That is/was actually the intended feature so that variables in the lua context could be shared/passed between, say, %pre and %post scriptlets implemented using embedded lua.



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