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

[Ingo Molnar <mingo@kernel.org>]

* 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