Re: bin:shift

Am 18.12.2020 um 12:28 schrieb Joel Kalvesmaki:
> In using bin:shift() I am getting some unexpected results.
>
> bin:shift(xs:base64Binary($i),1)
>
> $i = 'AfgA'
> expected = 'A/AA'
> actual = '//AA'
>
> Perhaps better seen in binary:
> input   : 000000 011111 100000 000000
> expected: 000000 111111 000000 000000
> actual  : 111111 111111 000000 000000
>
> I've gotten this error with $i as Af4= and some other test values
> that begin Af, but AgAA returns what I expect (BAAA).
>
> I'm not certain if the problem is my own head (frequent occurrence) or
> Saxon's implementation of bin:shift(). Any ideas out there?

In such cases I tend to look at the result of other implementations,
BaseX for

let $i := 'AfgA'
return bin:shift(xs:base64Binary($i),1)

agrees with you: "A/AA"



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