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

[Nikolay Kudryavtsev <nikolay.kudryavtsev@gmail.com>]

Well, that's your call here.

But let me try and restate why I think there's a real problem. If we go 
at it from the perspective of a user who has no knowledge of 
electric-pair-mode internals, but now has the idea that the he wants a 
before-word predicate. A quick look through variables would allow him to 
discover the existence of electric-pair-inhibit-predicate. And just by 
the name alone it sounds like exactly the right thing. But unfortunately 
if the user looks into electric-pair-default-inhibit he'd notice that it 
wraps around either electric-pair-inhibit-if-helps-balance or 
electric-pair-conservative-inhibit. So, now the user needs to know what 
those functions actually do and whether anything would break if he 
removes them and replaces them with his own. Or a more careless 
user(like me) would roll out his own predicate and only then notice that 
it broke some advanced behavior. In the end, a reasonable user who just 
wants to add a simple thing is now burdened by all the cognitive load of 
learning numerous functions and use cases.

Thus electric-pair-inhibit-predicate in it's current state is not 
something really user-customizable, but more of an Emacs internal.

As for the add-function option, I think relying on those as the first 
option goes against the Emacs philosophy of providing real 
customizability wherever possible and avoiding littering the manuals(and 
user inits) with dirty hacks like this as a much as possible. Also, just 
from the user standpoint, in the above case the same user would probably 
go for add-function only after he already noticed that the 
electric-pair-inhibit-predicate is inadequate for his purposes.