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
