Flag is a specific term used in this context, and the user may not know what it refers to. The UG does not explain the term 'flag' as well. The error command could have been clearer, e.g., "unknown friend command -- please type --add, --edit, or ....."
To reproduce:
friend --n
Result: "Unknown friend flag"
Flag is a specific term used in this context, and the user may not know what it refers to. The UG does not explain the term 'flag' as well. The error command could have been clearer, e.g., "unknown friend command -- please type --add, --edit, or ....."