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From: Ray Andrews <rayandrews@eastlink.ca>
To: zsh-users@zsh.org
Subject: Re: why is eval needed?
Date: Sat, 19 Nov 2022 11:12:43 -0800	[thread overview]
Message-ID: <352823cc-954a-fa79-d830-d69d593b1c02@eastlink.ca> (raw)
In-Reply-To: <20221119164852.hwujmufa6hn5lotr@chazelas.org>


On 2022-11-19 08:48, Stephane Chazelas wrote:
> And you're calling tree with only one "-L 2" argument while you
> want to call it with 2 arguments: -L and 2.

Right, that's what I figured out.  The hard part is 'seeing' these 
invisible boundaries.  But I'm pleased with myself that I did sort it out.

Clinton:

Another option is

     local level='-L 2'

     tree $=level


Word splitting level gives the results you want

     Excellent.  Yes, that's understandable.  Main thing is to realize 
that 'tree' want's two arguments there, not the intuitive single argument.

Roman:


You can do the reverse transformation--from array to scalar--like this:

     local array=(...)
     local scalar=${(@q)array}


... Finally I see a use of '(q)' that makes sense to me.



  reply	other threads:[~2022-11-19 19:13 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-11-19 14:34 Ray Andrews
2022-11-19 14:43 ` Roman Perepelitsa
2022-11-19 17:02   ` Ray Andrews
2022-11-19 17:10     ` Roman Perepelitsa
2022-11-19 18:02     ` Clinton Bunch
2022-11-19 18:18       ` Roman Perepelitsa
2022-11-19 16:48 ` Stephane Chazelas
2022-11-19 19:12   ` Ray Andrews [this message]
2022-11-19 19:50     ` Lawrence Velázquez
2022-11-19 22:21       ` Ray Andrews
2022-11-20  8:55         ` Stephane Chazelas
2022-11-20 13:47           ` Ray Andrews
2022-11-20 15:08             ` Stephane Chazelas
2022-11-20 16:27               ` Ray Andrews
2022-11-20 20:16                 ` Stephane Chazelas
2022-11-20 22:31                   ` Bart Schaefer
2022-11-21  2:13                     ` Ray Andrews
2022-11-20 22:47                   ` Ray Andrews

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