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get keys of an associative array?

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From: Jens Elkner <jel+zsh@xxxxxxxxxxxxxxxxxxx>
To: zsh-workers@xxxxxxx
Subject: get keys of an associative array?
Date: Sun, 26 Mar 2017 21:18:28 +0200
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Hi,

I've KSH_ARRAYS (beside KSH_GLOB KSH_TYPESET KSH_OPTION_PRINT) set,
however, getting the key set of an array via ${!vname[@]} (as usually
done within ksh or bash) does not work (bad substitution). Couldn't find
anything else, except the @k flag, but this doesn't work as well, e.g.

unset A; typeset -A A; A['a']=1; A['b']=2; A['c']=3 ; print "${(@k)A}"

should print 'a b c' but prints '3'. Bug, feature? Hmmm, any hints?

Thanx,
jel.
-- 
Otto-von-Guericke University     http://www.cs.uni-magdeburg.de/
Department of Computer Science   Geb. 29 R 027, Universitaetsplatz 2
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Follow-Ups:
- Re: get keys of an associative array?
  - From: Peter Stephenson

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