On Dec 27, 2007, at 1:06 PM, Ralf S. Engelschall wrote:

> On Thu, Dec 27, 2007, Ralf S. Engelschall wrote:
>
>> [...]
>> YES, YES, YES! Exactly *THIS* would be what we really need! I was not
>> aware that the old values are still preserved on a stack.
>> [...]
>
> Just tried it:
>
> | $ rpm --define 'foo bar' --eval '%foo' --define 'foo baz' --eval  
> '%foo' --undefine 'foo' --eval '%foo'
> | bar
> | baz
> | bar
>
> Very nice, very nice. I cannot just wait until I see Jeff's commit
> to support this:
>
> | $ rpm --define 'foo foo' --define 'foo bar' --define 'foo quux' -- 
> eval "%{@foo:\n}"
> | foo
> | bar
> | quux

Thanks for the syntax hint ;-)

>
> Very interesting what rather cool functionalities are under the hat
> of RPM and which nobody beside Jeff seems to know about at all. I
> guess there are even more those cool things which we just have to
> discovered... ;-)

Hehe. With arbitrary tags, I hope for "Specfile Sonnets" ala black  
perl poetry.

Larry Wall beware, there's Artistic competition ;-)

73 de Jeff