trucate user / group name before '\'

[Jaehaks]

• os: windows 10
• lsd --version: v1.1.1
• echo $TERM: windows terminal - cmd.exe
• echo $LS_COLORS:

Can I truncate user / group name after specific marker?
or example, my username is DESKTOP-619H44D\USER , and it is very long, can I truncate by marekr '" ?

GNU ls show the user name only USER.
In Current, I can truncate username depending on number of characters