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Re: Expand array into multiple elements per item?
- X-seq: zsh-users 16337
- From: Mikael Magnusson <mikachu@xxxxxxxxx>
- To: Zsh Users <zsh-users@xxxxxxx>
- Subject: Re: Expand array into multiple elements per item?
- Date: Tue, 13 Sep 2011 12:19:55 +0200
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On 13 September 2011 10:57, Peter Stephenson <Peter.Stephenson@xxxxxxx> wrote:
>> Why does neither (i) nor (ii) work?
> The main problem is that globbing flags rely on globbing; if there's no
> matching file, it doesn't work. You'd probably want "oN" in the
> globbing flags to turn off sorting if you did have files.
>> 3. I thought I recalled a relatively recent addition to parameter
>> expansion flags for just this use-case. But I can't seem to find the
>> flag in zsh-4.3.12 patchlevel 1.5346. Still interested in the answer to
>> the rest, regardless.
> You might be thinking of the globbing flag, P. If you did have files,
> *(P:-id:) would have done what you wanted. But you don't. The actual
> effect is a bit bizarre (turning off nomatch):
> a b(P:-id:)
> d e(P:-id:)
One fun thing you can do is use .(e,'reply=(foo bar baz)',) if you
want to use some other globbing flags on your data. It's not
applicable for this problem, at least I can't think of a way. I did
suggest it on irc once for sorting an array by the basename:
22:39 <offbyone> I want to sort this by basename so that I order the
elements in this pair of expansions asciibetically regardless of the
directory they're found in.
22:39 <offbyone> (so, for example, if I had A/02_something
B/01_something B/03_something, it'd come out as B/01_something
22:47 <Mikachu> a=( oneglob anotherglob )
22:47 <Mikachu> echo .(e:'reply=($a)':oe,'REPLY=$REPLY:t',)
It would be nice to have a similar mechanism for sorting arrays maybe :).
Oh wait, I just realized it does work, just do this:
% print -l - .(e:'reply=($somelist)':P:-id:)
Obviously, this does qualify in the 'a bit of a hack' category. (And
yes, it does fail if $PWD is chmoded -x, maybe / is a safer bet.)
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