The Common Lisp identifier names are the only standard I need. For my own personal use, I am not going to accept anything other then the Lisp naming conventions

The Common Lisp identifier names are the only standard I need. For my own personal use, I am not going to accept anything other then the Lisp naming conventions, which use lower case characters separated by dashes for identifiers. As such string-upper will continue to do just fine as it has been for decades.