Re: Filtering array on index

[Sebastian Gniazdowski <sgniazdowski@xxxxxxxxx>]

On Tue, 23 Jul 2019 at 09:42, Sebastian Gniazdowski
<sgniazdowski@xxxxxxxxx> wrote:
> I wonder what's going on? The code looks OK. Maybe it's a bug?

So it seems that the ++idx within the ::=-treated array brackets is
executed twice. This might get considered a bug, but there's a chance
that this is how the code is arranged. After moving ++idx outside, the
code works:

% a=(-v filter1 -v filter2 )
% idx=0; olen=$#a+1; : ${a[@]/(#m)*/$((++idx))${a[idx]::=${a[idx % 2 ?
olen : idx]}}}
% print $a
filter1
filter2

Of course the empty elements are still there so an empty-element
eradicating use like above is needed.
-- 
Sebastian Gniazdowski
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