#3565 Trouble with Batch quit();

[Allan James Payne]

wxMaxima version: 19.05.7
using wxWidgets version: wxWidgets 3.1.0
Maxima version: 5.43.0
Maxima build date: 2019-06-01 18:55:31
Host type: x86_64-w64-mingw32
System type: Win32 10.0.17763 X86-64
Lisp implementation type: SBCL
Lisp implementation version: 1.4.14
wxMaxima's idea of the directory layout is:
User configuration dir: C:/Users/apayne/maxima/
Help dir: C:\maxima-5.43.0\wxMaxima/help
Using
cd C:\Users\apayne\Desktop
type C:\Users\apayne\Desktop\a4.txt |C:\maxima-5.43.0\bin\maxima.bat >C:\Users\apayne\Desktop\a1.txt
echo aaa

The echo is not executed

[Leo Butler]

The problem is created by the line

$quit();

near the bottom of the input file a4.txt. If that line is entered interactively, a syntax error is signaled, but if batched Maxima hangs (it appears to be trying to read a subsequent character).
If you remove that line, the code will be batched correctly. Note there is an irrevelant error on the first line, which refers to %.

I will leave this open, because there is a bug here in batch.

[Allan James Payne]

Hi Leo
Thanks for your help.
Rgds Allan Payne

Sent from my iPad

On 16 Jul 2019, at 04:09, Leo Butler l_butler@users.sourceforge.net wrote:

The problem is created by the line

$quit();
near the bottom of the input file a4.txt. If that line is entered interactively, a syntax error is signaled, but if batched Maxima hangs (it appears to be trying to read a subsequent character).
If you remove that line, the code will be batched correctly. Note there is an irrevelant error on the first line, which refers to %.

I will leave this open, because there is a bug here in batch.

[bugs:#3565] Trouble with Batch quit();

Status: open
Group: None
Labels: Quit battch
Created: Sun Jun 23, 2019 12:25 PM UTC by Allan James Payne
Last Updated: Sun Jun 23, 2019 12:25 PM UTC
Owner: nobody
Attachments:

a1.txt (16.6 kB; text/plain)
a4.txt (847 Bytes; text/plain)
wxMaxima version: 19.05.7
using wxWidgets version: wxWidgets 3.1.0
Maxima version: 5.43.0
Maxima build date: 2019-06-01 18:55:31
Host type: x86_64-w64-mingw32
System type: Win32 10.0.17763 X86-64
Lisp implementation type: SBCL
Lisp implementation version: 1.4.14
wxMaxima's idea of the directory layout is:
User configuration dir: C:/Users/apayne/maxima/
Help dir: C:\maxima-5.43.0\wxMaxima/help
Using
cd C:\Users\apayne\Desktop
type C:\Users\apayne\Desktop\a4.txt |C:\maxima-5.43.0\bin\maxima.bat >C:\Users\apayne\Desktop\a1.txt
echo aaa

The echo is not executed

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[Leo Butler]

Let me correct myself. Maxima does not hang, and batch does correctly handle a syntax error like that above. Rather, it is doing a very lengthy calculation in the preceding line. The problem is that you are giving eigenvectors a 4x4 matrix (of floats) to find the exact eigenvalues/vectors for.

You should look at dgeev in the lapack package.

Marking this as a wont-fix and closing.