When using the uu-mv with multiple sources, if one of the specified sources does not exist, the error message produced by uu-mv differs from GNU's mv.

Example:

touch a; mkdir d;
mv  a b d/

GNU’s mv produces the following message:

mv: cannot stat 'b': No such file or directory

Whereas uu-mv outputs:

mv: cannot move 'b' to 'd/b': No such file or directory