Re: [Bug-apl] defn error with ⍝

[Juergen Sauermann]

Hi,

the original post was referring to the behavior of IBM APL2.

I just re-checked it, and IBM APL2 closes an open function if you enter ∇, even if the
∇ belongs to a comment.

In a way ∇ has a special meaning for the editor, just like ESC in vi.

/// Jürgen

On 01/29/2017 03:59 PM, address@hidden wrote:

Hi Juergen,

I looked at the http://lists.gnu.org/archive/html/bug-apl/2014-07/msg00249.html   and that is what i am 'using' as a programming technique - that ∇ is in a uncommented line

my 2nd ∇ is in a comment and should be ignored 

this is more how i use it in code    i would uncomment the 2nd line   ⍝ '⊂⌸⋸' ∇  and comment the 3rd line   'aaa' ∇

this is more like how i would code 

∇im
⍝ '⊂⌸⋸' ∇
 'aaa' ∇


∇im
  '⊂⌸⋸' ∇
⍝ 'aaa' ∇


On Sun, 29 Jan 2017 14:08:06 +0100
Juergen Sauermann <address@hidden> wrote:

Hi,

which one?

The first ∇ opens function im

The second ∇ is at the end of the comment and closes the function and                           <---- it is at the end of a comment and should not close the function
brings you back to immediate execution.

The third ∇ is the one below the comment line. It opens a function without a name,
which raised the DEFN error, just like:

      ∇
DEFN ERROR+
      ∇
      ^
      )MORE
Bad function header

In earlier versions of GNU APL the ∇ in the comment would belong to the function and
be ignored by the ∇-editor.

But then there was a request in bug-apl that a ∇ in a line of an open function should
not be parsed but instead close the function, which it now does. See

http://lists.gnu.org/archive/html/bug-apl/2014-07/msg00249.html

/// Jürgen


On 01/29/2017 02:20 AM, address@hidden wrote:

could someone give me a heads up why the ⍝ doesn't cover the ∇ in the line?

#! im

∇im
 ⍝ '⊂⌸⋸' ∇
∇

)copy im
DUMPED 2017-01-28 18:17:02 (GMT-7)
DEFN ERROR+
      ∇
      ^