Error detected while processing function <SNR>80_ReloadFolds:

[huangyingw]

Not easy to reproduce, I haven't found the 100% scenario to reproduce this issue. But I am sure it happened at my side 4-5 times daily.
I only saw this issue when open/close PROJECTROOT/.git/index repeatedly.
.git/index file is a special file under .git folder. Its content is dynamically changed in background.
Not sure whether it is related to neovim.
I am using neovim, vim is too too too slow for me. And transfer from vim to neovim is very very easy.

Bellowing are the neovim output:

Error detected while processing function 80_ReloadFolds:
line 14:
E121: Undefined variable: b:anyfold_ind_actual
Press ENTER or type command to continue
Error detected while processing function 80_ReloadFolds:
line 14:
E116: Invalid arguments for function len
Press ENTER or type command to continue
Error detected while processing function 80_ReloadFolds:
line 14:
E15: Invalid expression: line('$') - len(b:anyfold_ind_actual)
Press ENTER or type command to continue
Error detected while processing function 80_ReloadFolds:
line 14:
E121: Undefined variable: b:anyfold_ind_actual
Press ENTER or type command to continue
Error detected while processing function 80_ReloadFolds:
line 14:
E116: Invalid arguments for function len
Press ENTER or type command to continue
Error detected while processing function 80_ReloadFolds:
line 14:
E15: Invalid expression: line('$') - len(b:anyfold_ind_actual)

[throskam]

I can reproduce it when closing and reopening a buffer (e.g. :bd|e#)

[pseewald]

@huangyingw I hope my fix resolves the issue, please let me know in case you run into this again.

[huangyingw]

@pseewald yes, great thanks, if I see this again, certainly I will let you know.