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Re: what is truth?
On 2015-10-09 at 20:24 -0700, Ray Andrews wrote:
>
> test ()
> {
> [[ "$1" = <-> ]] && echo true
> }
>
> I don't have a clue what to make of ' <-> '. What value
> would work?
Any number.
Well, okay, any non-negative integer.
It's a glob operator:
----------------------------8< cut here >8------------------------------
<[x]-[y]>
Matches any number in the range x to y, inclusive. Either of
the numbers may be omitted to make the range open-ended; hence
`<->' matches any number. To match individual digits, the [...]
form is more efficient.
----------------------------8< cut here >8------------------------------
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