[Rpm-maint] [rpm-software-management/rpm] Implement %foreach builtin to iterate over arguments (PR #1828)

[Panu Matilainen]

Oh, right, you need to "call" the macro yourself, which is the way it should be, to pass options and all. So that does work, and so does

> ./rpm --define "dofoo() >%{1}<" --define "iter hello world %{quote:good bye}" --eval "%{foreach iter %dofoo %1}"

I suppose the catch with %1 there is that automatic macros are only looked up on the same level (but didn't look/think too closely, haven't slept enough for that). Perhaps this is simply a matter of documentation - which btw is missing in this PR, please add that.

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