Its one of the things about exiting Vim. If you type :q, and there are unsaved changes it will prompt you to save it first and not let you quit. So most people

Its one of the things about exiting Vim. If you type :q, and there are unsaved changes it will prompt you to save it first and not let you quit. So most people do :wq so that it saves and then quit or do :q! to quit without saving changes. Most people stop using :q.