Re: [Bug-apl] )COPY should not copy ⎕PW

[Juergen Sauermann]

Hi,

I have changed the code so that ⎕PW is not copied when no objects are specified
in the )COPY command, SVN

As much as I like IBM APL2 compatibility there is a limit to it when it begins
to make no sense anymore.

For example if I would say:

      )COPY some_WS A B ⎕PW

then IBM APL2 would copy A and B but not ⎕PW. This is rather counter-intuitive and
I take the freedom to copy ⎕PW in GNU APL even though IBM APL2 would not.

When it comes to commands, the ISO standard explicitly leaves a lot of freedom
to their implementation.

/// Jürgen


On 07/02/2014 05:01 AM, Blake McBride wrote:

As I've stated before, I am not smart enough to understand that spec.  IBM's language manual is readable, and it is clear about how it works.  Also, I just tested IBM APL 2.  It works as I describe.

On Tue, Jul 1, 2014 at 9:48 PM, Elias Mårtenson <address@hidden> wrote:

The standard spec is not entirely clear on this, but the way I read it suggests that everything it supposed to be copied.

Regards,

Elias

On 2 July 2014 09:58, Blake McBride <address@hidden> wrote:

According to the IBM APL2 Programming Language Reference (page 423), the )COPY command should not copy ⎕PW.  The manual states:  "The only system objects that can be copied are ⎕CT, ⎕FC, ⎕IO, ⎕LX, ⎕PP, ⎕PR, and ⎕RL.

Current GNU APL:

      )CLEAR

CLEAR WS

      ⎕PW←80

      )save ws1

2014-07-01  20:57:00 (GMT-5)

      ⎕PW←132

      )COPY ws1

SAVED 2014-07-02 -4:57:00 (GMT-5)

      ⎕PW

80