Re: Splitting variable into two numbers

[ikhxcsz7y xmbott]

_=\{51,25\} p=${_#?} q=${p#*,} p=${p%,*} q=${q%?}
printf 'p=%s q=%s\n' "$p" "$q"

On Tue, Jul 20, 2021 at 8:21 PM <lisa-asket@perso.be> wrote:

> The multi-input is always enclosed within braces with no whitespaces.
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> Thus "{5,8}", "{13,21}"
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> In general input is "{p,q}" with no whitespaces
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> Nothing more than that.
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> Then p=5; q=8 and p=13; q=21
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> From: Greg Wooledge <greg@wooledge.org>
> To: help-bash@gnu.org
> Subject: Re: Splitting variable into two numbers
> Date: 20/07/2021 19:05:01 Europe/Paris
>
> On Tue, Jul 20, 2021 at 06:15:32PM +0200, lisa-asket@perso.be wrote:
> > I would like to split a variable containing two numbers delimited by a
> comma
> >
> > and transfer the two numbers into two variables p and q.
>
> p=${input%,*} q=${input#*,}
>
> > Input:
> >
> > var="{5,8}"
>
> STOP!
>
> All of a sudden, this is an X-Y problem. You don't have "two numbers
> delimited by a comma". You have something else entirely. There are
> curly braces now. I wonder what else is in there.
>
> Is it really JSON?
>
> What's the *actual* goal here? Where does this input come from, what
> does it *really* look like (before any mangling you've already done
> on the X-Y path), and what are you trying to do with it?
>
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>