> interest. Some time ago Stefan Monnier changed add-to-list by pushnew, I
> don't know what the motivation was, probably somebody had complained
> that add-to-list was taking too much time.
add-to-list doesn't work on lexical variables.
> However these are not functionally equivalent, pushnew will skip the
> replacement only if the node name is already there on top of the list,
> while add-to-list will skip it if it is already there at any place.
Not so: (cl-)pushnew looks at the whole list as well.
I don't have much opinion on this function in general, since I don't
use it. All I care about is to not re-introduce the
add-to-list abomination (it's fine for use in a user's ~/.emacs to add
some element to a global variable, but definitely not when operating on
a let-bound variable).
Stefan
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