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SubjectRe: [PATCH 3/3] perf, tool: Add new event group management

* Peter Zijlstra <a.p.zijlstra@chello.nl> wrote:

> # echo {}
> {}
> # echo {en,dis}able
> enable disable
>
>
> It somehow special cases {}, which is horrible.

Oh, indeed: brace expansion and sequence expressions both use
curly braces:

$ echo foo-{a,b,c}-bar
foo-a-bar foo-b-bar foo-c-bar
$ echo {1..10}
1 2 3 4 5 6 7 8 9 10
Too bad, it would be rather intuitive. All the brace characters
are taken by Bash.

Maybe something like:

$ echo /minor-faults,major-faults/
/minor-faults,major-faults/

although it looks a bit weird.

So ... how about using another grouping operator, such as '+'?

Something like:

-e minor-faults+major-faults

While when comma separated they are not grouped, or so.

?

Thanks,

Ingo


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