Hi,
A simple path to reproduce the reported ")Copy bug" :
)clear
CLEAR WS
)copy Editor
SAVED 2025-02-10 09:15:01 (GMT-6)
E∆Edit 'E∆Edit'
At all prompts you can type 'end' to exit or backup to the previous
question.
You can often type 'help' to get help.
Enter your edit command? edit
Enter the line numbers you wish to change, or [a,b,r]? 2
SYNTAX ERROR
E∆Piv[18] →(0=⍴t)/0
^^
)reset
→(0=⍴,0)/0
SYNTAX ERROR+
→(0=⍴0)/0
^
The difference!!! <⍴,0> vs <⍴0>
Best Regards
Hans-Peter
Am 10.02.25 um 15:34 schrieb Blake McBride:
I just checked. None of the problems I reported were corrected with
this change.
Thanks.
Blake
On Mon, Feb 10, 2025 at 7:53 AM Dr. Jürgen Sauermann
<mail@jürgen-sauermann.de <mailto:mail@j%C3%BCrgen-sauermann.de>> wrote:
Hi,
latest news: I have corrected an error in the ∇-editor. *SVN 1833*.
I am currently working on fixing a border case for function headers.
Not entirely stable yet. Your problem might be related to specific
function header cases.
Best Regards,
Jürgen
On 2/10/25 13:55, Dr. Jürgen Sauermann wrote:
Hi,
I am definitely not arguing that the problem is outside GNU APL.
However,
it is very difficult for me to troubleshoot a problem that only
occurs in the context
of a workspace that I am not familiar with. So please help to
simplify the issue
to a smaller size.
Thanks,
Jürgen
On 2/9/25 20:09, Blake McBride wrote:
In case I haven't been clear, as far as I can tell, all of the
problems are with GNU APL and none are with the Editor code. At
some earlier date, this exact editor code worked fine under GNU
APL. The editor code hasn't changed but no longer works; as
reported.
If errors in the editor are found, I am happy to correct them.
Thanks.
Blake
On Sun, Feb 9, 2025 at 12:22 PM Blake McBride
<blake1...@gmail.com> wrote:
The help message should be printed by the first line
of E∆Pim. I checked it and the code is correct. It just
doesn't run.
If I cut/paste the code into GNU APL it works fine. But it
doesn't run inside a function.
Just FYI, this Editor WS was used in a
production environment, on a daily basis, for years on other
APL systems. When moving it to GNU APL I had to type it in
so typos are possible. Other than typos, however, the code
is solid.
Thanks.
Blake
On Sun, Feb 9, 2025 at 11:51 AM Blake McBride
<blake1...@gmail.com> wrote:
Greetings,
I haven't been using GNU APL for a while - just because
I had other things I needed to do. Now, trying to debug
this issue I am finding several issues. Here is the first:
)load Editor
SAVED 2025-02-09 10:13:37 (GMT-6)
⎕IO←0
(⎕CR 'E∆Edit')[31;]
EN1:→(2↑bv←qq E∆Pim'Enter your edit command')/END,EN1
E∆Edit 'E∆Edit'
At all prompts you can type 'end' to exit or backup to
the previous question.
You can often type 'help' to get help.
Enter your edit command? help
Enter your edit command? end
SYNTAX ERROR
E∆Edit[31] →(2↑bv←qq E∆Pim 'Enter your edit command')/31 34
^^
1. It shouldn't show "31 34". It should show "END,EN1".
2. Syntax error. Really? Where?
3. When I typed 'help' it should have seen a help
message. I haven't traced this through because of the
syntax error.
This code worked fine as-is when it was released.
I'll see what I can do with #3.
Thanks!
Blake
On Sun, Feb 9, 2025 at 10:07 AM Blake McBride
<blake1...@gmail.com> wrote:
Hello,
I have been watching this thread. My impression is
that it is not my code but a bug in GNU APL. If it
is my code, I am very happy to fix it. I will take
a look.
Thanks.
Blake
On Sun, Feb 9, 2025 at 9:08 AM Dr. Jürgen Sauermann
<mail@jürgen-sauermann.de
<mailto:mail@j%C3%BCrgen-sauermann.de>> wrote:
Hi Paul,
maybe Blake has an idea. For me it is very
difficult to fix
workspaces that were contributed by other users.
For the
author of the workspace fixing problems is far
more easy.
Best Regards,
Jürgen
On 2/8/25 19:48, Paul Rockwell wrote:
Unfortunately, I haven't been able to get this
reproduced with anything simpler. I can
reliably reproduce this using Blake's APL
Editor found here:
https://github.com/blakemcbride/APLEditor
I don't believe it to be an error in the
functions themselves. I can )LOAD the original
workspace and "fix up" problematic functions
that I know have thrown the syntax error in the
past by simply opening and immediately closing
the funcion (no other changes) with the ∇
editor. Things work fine after that.
II )SAVE the workspace, and then )LOAD the
saved copy, and the error re-appears.
I've validated the variables in the offending
statement each time the error appears. All
appears normal - there's no syntax error
apparent in the expression, so I have no idea
why the interpreter is throwing an error. If
the function/workspace had problems, to me it
seems as a result of the )save,)load,)copy
mechanisms. Only the ∇ editor gets me around
the issue - ⎕FX ⎕CR 'function-name' does not.
Any ideas on how I can help track this down?
- Paul
On Feb 8, 2025, at 11:34 AM, Dr. Jürgen
Sauermann <mail@jürgen-sauermann.de>
<mailto:mail@jürgen-sauermann.de> wrote:
Hi Paul,
that very much looks like an error in the
Editor workspace, doesn't it?
Can you reproduce the fault in plain APL?
Best Regards,
Jürgen
On 2/6/25 19:14, Paul Rockwell wrote:
I've been seeing syntax errors being thrown
on functions copied from another workspace.
I've imported Blake McBride's APL editor from
his GitHub site (linked to by the GNU APL
Community pages). It seems to be reasonably
up to date.
Once I have the workspace created containing
the editor application, I )SAVE it. I then
create a new workspace and )COPY the
functions in the editor workspace into my
current workspace. Then I attempt to use it
to edit a function (an alternative to the ∇
editor).
What I see is that the copied editor function
will fail with a syntax error on branch
statements within the function:
)copy Editor
SAVED 2025-01-19 15:03:52 (GMT-5)
E∆Edit 'asd'
At all prompts you can type 'end' to exit or
backup to the previous question.
You can often type 'help' to get help.
Enter the line numbers you wish to change, or
[a,b,r]? 2
SYNTAX ERROR
E∆Piv[18] →(0=⍴t)/0
^^
However, if you look at the variables
involved, there should be nothing that should
cause this syntax error
t
2
⍴t
1
0=⍴t
0
0/0
⍴0/0
0
The strange thing about this is that if I
open the offending function in the ∇ editor
and save it (making no changes), the error
goes away... at least for that function:
)si
∇E∆Piv
[51] ∇
E∆Edit 'asd'
At all prompts you can type 'end' to exit or
backup to the previous question.
You can often type 'help' to get help.
Enter your edit command? edit
Enter the line numbers you wish to change, or
[a,b,r]? 2
24
Enter your edit command? end
SYNTAX ERROR
E∆Edit[31] →(2↑bv←qq E∆Pim 'Enter your edit
command')/31 34
^^
As you can see, another function is
exhibiting the same error. Like the E∆Piv
function, opening the E∆Edit function seems
to "fix"the issue.
What doesn't seem fix the issue is using ⎕CR
and ⎕FX as an alternative to the ∇ editor.
)reset
⎕FX ⎕CR 'E∆Edit'
E∆Edit
E∆Edit 'asd'
At all prompts you can type 'end' to exit or
backup to the previous question.
You can often type 'help' to get help.
Enter your edit command? edit
Enter the line numbers you wish to change, or
[a,b,r]? 2
24
Enter your edit command? end
SYNTAX ERROR
E∆Edit[31] →(2↑bv←qq E∆Pim 'Enter your edit
command')/31 34
^^
As you can see, that didn't fix the problem.
Now open E∆Edit with the ∇ editor and see
what happens:
)reset
∇E∆Edit
[41] ∇
E∆Edit 'asd'
At all prompts you can type 'end' to exit or
backup to the previous question.
You can often type 'help' to get help.
Enter your edit command? edit
Enter the line numbers you wish to change, or
[a,b,r]? 2
24
Enter your edit command? end
As I said, this is very strange behavior. I
can work around it, but quite honestly it's a
pain because I have no idea when the issue is
going to crop up again.
- Paul Rockwell
