Major Section: SWITCHES-PARAMETERS-AND-MODES
See override-hints for a discussion of override-hints. Here we describe how
to extend the list of override-hints. Note that the effects of
add-override-hints events are local to the books or
encapsulate events in which they reside; see add-override-hints! to
avoid that restriction. Also see set-override-hints to set a new list of
override-hints to it, ignoring the present list rather than adding to it.
General Forms: (add-override-hints form) (add-override-hints form :at-end t) (add-override-hints form :at-end nil) ; default for :at-endwhere
formevaluates to a list of computed hint forms. The effect of this event is to extend the current list of override-hints by appending the result of that evaluation. The default is to append the evaluation result to the front of the current list of override-hints, but if
:at-end tis specified, then the evaluation result is appended to the end of the current list.