Bug 391587

Summary: Reverse Debugging; record changes in vars at every step.
Product: [Applications] rkward Reporter: D G <rain8dome9>
Component: R ConsoleAssignee: RKWard Team <rkward-devel>
Status: CONFIRMED ---    
Severity: wishlist CC: thomas.friedrichsmeier
Priority: NOR    
Version First Reported In: unspecified   
Target Milestone: ---   
Platform: Other   
OS: Microsoft Windows   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description D G 2018-03-08 22:25:04 UTC 
I hope something like reverse debugging exists in an R. All you really need to do is write down the changes in variables at every step. str() would be best. Crash. Automatically highlight vars involved, and user can add more. Var change window moves highlighted vars to left. Keep scrolling up to catch whenever the NAs or structure changes show up first and there is my bug 2/3 times. Maybe this is called record-replay debugging. 

https://stackoverflow.com/questions/14159806/reverse-debugging-for-languages-other-than-c-c
Comment 1 Justin Zobel 2022-11-15 22:58:33 UTC 
Thank you for reporting this issue in KDE software. As it has been a while since this issue was reported, can we please ask you to see if you can reproduce the issue with a recent software version?

If you can reproduce the issue, please change the status to "REPORTED" when replying. Thank you!
Comment 2 Thomas Friedrichsmeier 2022-11-16 16:18:16 UTC 
It's a wishlist item, really, but still a valid one.