I am having trouble setting the path values for home_path, desktop_path, root_path, and cdata_path to a relative path in Windows. I assume that pico.exe is using the config.txt in its own directory before looking in appdata/roaming, but after every variation of a relative path I have tried, the pico-8 folder is still created in appdata/roaming instead of the relative path.

Variations I have tried:

home_path .
home_path /
home_path ./

UPDATE:

I solved this by using the command line arguments -home . -desktop . in a BAT file.

UPDATE 2:

After troubleshooting a couple more pathing issues, here are my final settings that are working for a portable pico-8 directory I just keep in dropbox:

shortcut:

pico8.exe -home .

BAT file with dev console:

cmd /k start pico8.exe -home .

config.txt:

desktop_path desktop/
root_path carts/
cdata_path cdata/