(define-native byte    :bind-to "string.byte"    :pure)
(define-native char    :bind-to "string.char"    :pure)
(define-native dump    :bind-to "string.dump"    :pure)
(define-native find    :bind-to "string.find"    :pure)
(define-native format  :bind-to "string.format"  :pure)
(define-native gsub    :bind-to "string.gsub"    :pure)
(define-native len     :bind-to "string.len"     :pure)
(define-native lower   :bind-to "string.lower"   :pure)
(define-native match   :bind-to "string.match"   :pure)
(define-native rep     :bind-to "string.rep"     :pure)
(define-native reverse :bind-to "string.reverse" :pure)
(define-native sub     :bind-to "string.sub"     :pure)
(define-native upper   :bind-to "string.upper"   :pure)
