After running a cell a white dot appears on the file tab.

[smithy49]

Hi,
I'm running VSCode 1.69 on Windows 10.
When running certain cells a white dot appears in the file tab.
After saving the file the dot disappears and re-appears after running the cell again.
This happens when the code below is executed.

''.join(["hello", "world"])

Thanks for any help.

[amunger]

the execution count is stored in the text of the ipynb, so every execution will change the underlying file. If I know which white dot you are referring to, that just means the file has unsaved changes.

[amunger]

I haven't seen that before, do you have another extension that could be adding it? From the behavior in the original description, it sounds like a dirty indicator, but I don't know why it would show there.
Is it only for specific files (.ipynb) and only for executing that specific code?

[oscar-defelice]

yes, that one is the "unsaved changes" sign.
A ipynb file is ultimately a json file. There is an execution counter field for each cell. So if you run a cell you are changing the file.

[smithy49]

I've been doing some experimentation and this is what I've discovered.
I tried VSCode on Ubuntu 20.04 and executed the same cell and the dirty indicator show up momentarily which implies that the file was auto saved.
I then installed VSCode from scratch on Windows 10 in a virtual machine and running the same cell produced the dirty indicator until I manually saved the file. Should I raise a bug?

[amunger]

auto-save is off by default, so that sounds like it's working as intended as long as your Ubuntu install has auto-save enabled. Files: auto save in settings or files.autoSave in the settings.json

[smithy49]

@amunger Thanks for your tip. The dirty indicator now gone after setting auto-save.