bug#73688: [PATCH] electric-pair-mode - preserve balance in conservative mode

[Nikolay Kudryavtsev]

OR seems like the natural solution for multiple predicates in this case. 
And if you need AND for a subset of predicates, you can easily roll out 
your own predicate implementing that.
Obviously there's nothing really wrong with add-function hacks in 
practice, but, in my opinion, if we're relying on them in places for 
which a proper customization ability was already designed and 
implemented, it's a telling sign that it is inadequate.