From: Clinton Bunch <cdb_zsh@zentaur.org>
To: zsh-users@zsh.org
Subject: Re: why is eval needed?
Date: Sat, 19 Nov 2022 12:02:10 -0600 [thread overview]
Message-ID: <fa96928a-ffb9-4821-9ce3-7f064a69cd3f@zentaur.org> (raw)
In-Reply-To: <fda15801-21cb-4916-daae-b816c73f1ab0@eastlink.ca>
On 11/19/2022 11:02 AM, Ray Andrews wrote:
>
> On 2022-11-19 06:43, Roman Perepelitsa wrote:
>> With the default options this this the same as this:
>> tree '-L 2'
>>
>> Is it clear why it doesn't work?
>
> Actually yes ... but that was only my last effort. With double quotes
> the error is:
>
> > -L 2 [error opening dir]
>
> ... and with no quotes it's:
>
> > test:local:5: not valid in this context: -L
>
> ... to correct myself, it's really the double quoted offering that I'd
> expect to work. I'm pretty sure this is an invisible grouping of
> arguments but I don't know what to do about it other than 'eval'. I'm
> thinking that when tree sees: " -L 2 " it's seeing that not as a
> switch followed by a number, but as a single syntactic element which
> it's trying to interpret as a directory name. Which sorta is
> semi-understandable since the quotes make " -L 2 " into 'one thing'
> whereas tree want's it to be 'two things'. How to drop that variable
> in there so that tree is happy with it? Is this perhaps a bit of
> crabbiness on the part of tree? Should " -L 2 " be an array?? Sheesh,
> that might keep tree happy. And ...
>
> local level=( -L 2 )
> tree $level
>
> ...
>
> Success! Ha! You give me enough feedback that I can talk myself out
> of the problem :-)
Another option is
local level='-L 2'
tree $=level
Word splitting level gives the results you want
>
>
>
>
>
>
next prev parent reply other threads:[~2022-11-19 18:03 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 [this message]
2022-11-19 18:18 ` Roman Perepelitsa
2022-11-19 16:48 ` Stephane Chazelas
2022-11-19 19:12 ` Ray Andrews
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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