Re: [Bug-apl] ⎕EC return values are incorrect for user-defined errors

[Juergen Sauermann]

Hi David,

thanks, fixed in SVN 306.

/// Jürgen


On 05/31/2014 07:51 PM, David B. Lamkins wrote:
> See the IBM Reference, page 280, paragraph 3.
>
> When ⎕EC executes an expression that signals a user-defined error, the
> second and third items of the result should be the same as the
> expression's ⎕ET (which would be 0 1 in this case) and ⎕EM. GNU APL
> returns 0 0 and 'User defined error'.
>
> Note also that ⎕ET must not be changed by ⎕EC. GNU APL already does this
> correctly.
>
> It's not clear from the IBM Reference whether ⎕EM should also not be
> changed by ⎕EC. It seems reasonable to assume that *not* changing ⎕EM is
> the correct behavior; the whole point of ⎕EC is to execute an expression
> in a controlled manner. If so, GNU APL is already correct in this
> regard.
>
>
>        ⎕es 'foo'
> foo
>        ⎕ES 'foo'
>        ^
>        ⎕em
> foo
>        ⎕ES 'foo'
>        ^
>        ⎕et
> 0 1
>        ⎕ec '⎕es ''foo'''
>   0  0 0  User defined error
>        ⎕em