[rpg@tsathoggua defsystem-3.4i]$ diff -u -F '^(def' orig/defsystem-3.4i/defsystem.lisp defsystem.lisp --- orig/defsystem-3.4i/defsystem.lisp 2004-04-27 10:56:18.000000000 -0500 +++ defsystem.lisp 2004-06-14 16:07:24.000000000 -0500 @@ -1193,7 +1193,11 @@ (defparameter *defsystem-version* "3.4b ;;; Customizable System Parameters * ;;; ******************************** -(defvar *dont-redefine-require* nil +(defvar *dont-redefine-require* + #+(and allegro (version>= 6 2)) + t + #-(and allegro (version>= 6 2)) + nil "If T, prevents the redefinition of REQUIRE. This is useful for lisps that treat REQUIRE specially in the compiler.")