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* zip arrays exclude empty elements
@ 2020-09-04 22:03 sergio
  2020-09-06  0:21 ` Bart Schaefer
  0 siblings, 1 reply; 2+ messages in thread
From: sergio @ 2020-09-04 22:03 UTC (permalink / raw)
  To: zsh-users

I have an input string in form of 'A[-][B]' that I'd like to translate 
as follows:

1: A-B    ->  -a A -b B
2: A-     ->  -a A
3: A      ->  -a A
4: -B     ->  -b B
5: empty  ->  empty

The solution I found:
echo ${tmp[1]:+-a $tmp[1]} ${tmp[2]:+-b $tmp[2]}

But possible there is clearer and simpler solution, like

o=(-a -b)
echo ${o:^tmp}

or even
echo ${(-a -b):^${(@s.-.)crop}}


^ permalink raw reply	[flat|nested] 2+ messages in thread

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2020-09-04 22:03 zip arrays exclude empty elements sergio
2020-09-06  0:21 ` Bart Schaefer


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