Bug 399294

Summary: [Maxima] Evaluating the work sheet breaks on the first conversion
Product: [Applications] cantor Reporter: Albert Astals Cid <aacid>
Component: maxima-backendAssignee: Alexander Semke <alexander.semke>
Status: RESOLVED FIXED    
Severity: normal CC: alexanderrieder, warquark
Priority: NOR    
Version First Reported In: 18.08   
Target Milestone: ---   
Platform: Other   
OS: Linux   
Latest Commit: https://commits.kde.org/cantor/01261aff0ea86a9350e7a2f61a9aca38ffa8f434 Version Fixed/Implemented In: 18.12
Sentry Crash Report:

Description Albert Astals Cid 2018-10-01 22:07:09 UTC 
Cantor 18.08.1

STEPS TO REPRODUCE
1. open cantor
2. open the maxima tutorial for beginners file
3. Press evaluate the work sheet

OBSERVED RESULT

The evaluation doesn't get past the first operation (9+7), sometimes it gives "T" as output and sometimes it's empty.

I have the feeling it may be the latex conversion script failing/hanging?

SOFTWARE VERSIONS
Qt Version: 5.11.2

ADDITIONAL INFORMATION
Maxima 5.41.0
Comment 1 Nikita Sirgienko 2018-10-02 20:38:45 UTC 
About 'T': I don't know that is it, but I sometiems (rarely) found 'T' not only in Cantor, but in maxima cli too.
So, that you reproduced this problem - good news for me, I now know, that this is real problem.
Comment 2 Nikita Sirgienko 2018-11-18 17:32:47 UTC 
I have found a cause of the problem. Thanks, Albert, your hypothesis was very helpfull.
Comment 3 Nikita Sirgienko 2018-11-20 12:48:08 UTC 
Git commit 35c3e15d6c3c0faeb867d4b2f14a36025f4bc450 by Nikita Sirgienko.
Committed on 20/11/2018 at 12:44.
Pushed by sirgienko into branch 'master'.

Fix bug, when "T" and "NIL" sometimes appearing in output
FIXED-IN: 18.12

M  +9    -2    src/backends/maxima/maximasession.cpp

https://commits.kde.org/cantor/35c3e15d6c3c0faeb867d4b2f14a36025f4bc450
Comment 4 Nikita Sirgienko 2018-11-20 12:48:59 UTC 
Git commit 01261aff0ea86a9350e7a2f61a9aca38ffa8f434 by Nikita Sirgienko.
Committed on 20/11/2018 at 12:47.
Pushed by sirgienko into branch 'Applications/18.12'.

Fix bug, when "T" and "NIL" sometimes appearing in output
FIXED-IN: 18.12
(cherry picked from commit 35c3e15d6c3c0faeb867d4b2f14a36025f4bc450)

M  +9    -2    src/backends/maxima/maximasession.cpp

https://commits.kde.org/cantor/01261aff0ea86a9350e7a2f61a9aca38ffa8f434