bug#54405: 27.1; How to reset connection-local variable

[Drew Adams]

> File-local, directory-local and connection-local variables are set
> independently. All of them are implemented as buffer-local variables,
> that means, if a given variable is both file-local and connection-local
> (or directory-local), there might be conflicts.
> 
> Until now, there is no mechanism to avoid this (AFAIK).

Good to know.  Thx.

I haven't checked the doc for each of those kinds
of var.  But do we mention what you say in the
doc?

E.g., do we say that a var that's local in more
than one of these ways might be problematic ("there
might be conflicts")?  Should the doc say clearly
what happens (e.g., what determines the order or
priority)?