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From: "Lawrence Velázquez" <larryv@zsh.org>
To: "Zach Riggle" <zachriggle@gmail.com>
Cc: zsh-users@zsh.org
Subject: Re: Setting GLOB_DOTS for a single command
Date: Sun, 21 Nov 2021 00:28:23 -0500	[thread overview]
Message-ID: <719906ad-5f27-4eaf-ba34-f559ebcad523@www.fastmail.com> (raw)
In-Reply-To: <CAMP9c5mXzK=HHqZjwJdRSraf_LF3vLp0chMjpD-VnaurZ3z2Wg@mail.gmail.com>

On Sat, Nov 20, 2021, at 11:46 PM, Zach Riggle wrote:
> I recently learned about GLOB_DOTS, which is pretty useful in some 
> scenarios, e.g.
>
>> echo *(md-1)
>
> To show all files modified within the last day.  However, in some cases 
> I want to see hidden files (e.g. ./.foo) as well.  The globdots option 
> is excellent for this!
>
> Is there an easy way to set this for a single expression?

Yes, the "D" glob qualifier.

    % touch {.,}{a..c}
    % print -r -- *   
    a b c
    % print -r -- *(D)
    .a .b .c a b c

> I know I can use a function / anonymous function combined with 
> LOCAL_OPTIONS to get this, but I wondered if there's something more 
> clever.
>
> [...]
>
> I expect that there's something I can do for scripts that I fully 
> control, to declare some function ('globdots') which is invoked with 
> noglob, and can then internally set the flag, and then trigger 
> expansion of each argument in "$@".  
>
> [...]
>
> I can just invoke "eval" on something that I KNOW will be a glob 
> expression to get it to expand, but blindly calling eval will execute 
> things that are NOT glob expressions, and I only want filename 
> expansion.
>
> What I have found that DOES work (but overkill and a hack) is just to 
> shell out to zsh again, while passing in all options that are currently 
> set -- plus globdots.
>
> [...]
>
> Then there's also the issue of causing filename expansion to occur when 
> unintended -- for example, if '*' is indeed just a string argument, and 
> should not be subject to expansion.  I think this corner case I can 
> ignore, as any user will explicitly be asking for glob expansion.

What verve!  Fortunately you don't have to do any of this :)

> Finally, I wanted to say that I genuinely appreciate the help and 
> answers I've gotten from this community.  You're all very welcoming, 
> experienced, and get down to the point / answers quickly.

On behalf of the actual helpful people, you're quite welcome.

> If there's any way that I can help support Zsh development or the
> community around it, please let me know.

I think your using zsh is already quite supportive!

-- 
vq


  parent reply	other threads:[~2021-11-21  5:37 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-21  4:46 Zach Riggle
2021-11-21  5:11 ` FW: " agkozak
2021-11-21  5:20   ` Bart Schaefer
2021-11-21  5:28 ` Lawrence Velázquez [this message]
2021-11-24  2:20   ` Zach Riggle
2021-11-21  5:36 ` Bart Schaefer
2021-11-21  5:38   ` Bart Schaefer

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