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• Strings
• String-upcase

String-upcase-gen

Upcase any string (even ones with non-standard characters).

;; Convert the characters in STR from upper to lower case, leaving
;; non-upper-case-letters unchanged.
(defund string-upcase-gen (str)
  (declare (xargs :guard (stringp str)))
  (coerce (chars-upcase-gen (coerce str 'list) nil) 'string))