Re: [Bug-apl] Subtle bug in quad-tf

[Juergen Sauermann]

Hi David,

thanks. Hopefully fixed in SVN 218.

/// Jürgen


On 04/20/2014 05:03 AM, David B. Lamkins wrote:
> When using 2⎕tf to encode a nested array in which the last element is a
> character array of rank greater than one, the parentheses around the
> denotation of that element are incorrectly omitted.
>
>        zzzz←'elan' 77 (2 3⍴⍳2)
>        2⎕tf 'zzzz'
> zzzz←'elan' 77 (2 3⍴1 2 1 2 1 2)
>        zzzz←'elan' 77 (2 3⍴⍬)
>        2⎕tf 'zzzz'
> zzzz←'elan' 77 (2 3⍴0 0 0 0 0 0)
>        zzzz←'elan' 77 (2 3⍴'ab')
>        2⎕tf 'zzzz'
> zzzz←'elan' 77 2 3⍴'ababab'
>        zzzz←'elan' 77 (2 3⍴'')
>        2⎕tf 'zzzz'
> zzzz←'elan' 77 2 3⍴'      '
>
> The problem doesn't exist when the rank of the final element is less
> than two, since no parentheses are necessary to delimit the element's
> denotation:
>
>        zzzz←'elan' 77 'abc'
>        2⎕tf 'zzzz'
> zzzz←'elan' 77 'abc'
>        zzzz←'elan' 77 ''
>        2⎕tf 'zzzz'
> zzzz←'elan' 77 ''