| (: Name: WhereExpr018 :) | |
| (: Description: Use of undefined variable in 'where' clause :) | |
| (: insert-start :) | |
| declare variable $input-context external; | |
| (: insert-end :) | |
| for $file in ($input-context//Folder)[1]/File | |
| where $undefined | |
| return $file/FileName |