If settings.json in portable settings folder (or folder itself) is not writeable WT will crash if you try to save settings

[PGomersall]

Windows Terminal version

1.22.250314001 Portable (probably other versions as well)

Windows build number

10.0.26100.4061

Other Software

N\A

Steps to reproduce

Open settings UI, make a change click save > WT crashes

Expected Behavior

An error should be raised if settings.json is not writeable, but WT should not crash.

Actual Behavior

WT Crashes. If folder is writeable but not the settings.json file a settings.json.tmp is created

[Zeroes1]

canary terminal-1.24.1351.0 same.

[DHowett]

Thanks! I could have sworn we had a duplicate for this, but it appears that we don't. Congrats!

Though: why is it not writable? 🙃

[PGomersall]

Though: why is it not writable?

@DHowett I had a script to automate updating and or creation of the portable in C:\WT which runs as system. On some systems the default permissions on C:\ and therefore the inherited C:\WT did not give users more than read and execute. I added code in my script to deal with this, but wt should not crash regardless trying to write to the settings file that is effectively locked, hence my bug ticket.