Re: question about `while-no-input' in xemacs-base/subr-more.el

A blast from the past (March 2013). Michael Sperber writes: > ;;;###autoload > (defmacro while-no-input (&rest body) > "Execute BODY only as long as there's no pending input. > If input arrives, that ends the execution of BODY, > and `while-no-input' returns t. Quitting makes it return nil. > If BODY finishes, `while-no-input' returns whatever value BODY produced." > (declare (debug t) (indent 0)) > (let ((catch-sym (make-symbol "input"))) > `(with-local-quit > (catch ',catch-sym > (let ((throw-on-input ',catch-sym)) > (or (input-pending-p) > (progn ,＠body))))))) Does this actually work in XEmacs? AFAICS there's no symbol `throw-on-input' in XEmacs 21.5. Nor, again AFAICS, is there anything here that actually catches the `quit' signal.