string:trim-end
builtin-function
(string:trim-end str) (string:trim-end str &rest trim-chars) (string:trim-end str trim-chars-str)
(string:trim-end str)
(string:trim-end str &rest trim-chars)
(string:trim-end str trim-chars-str)
The third form is a Kiezellisp extension.
make-html > (.trim-end "abcdefefefef" "fe") it: "abcd"