: no-vocab-found ( name -- empty )
{ } 2array ;
-: [is-used?] ( hash-set -- quot )
- '[ nip [ _ in? ] any? ] ; inline
-
: reject-unused-vocabs ( assoc hash-set -- seq )
- [is-used?] assoc-reject keys ;
+ '[ [ _ in? ] any? ] reject-values keys ;
:: print-new-header ( seq -- )
"Use the following header to remove unused imports: " print