bug#18891: Doesn't handle pwd = /C: very well

[Stefan Monnier]

> That's probably something Emacs should do _before_ invoking the
> handler, no?  I mean, the decision whether to let the handler do this
> job is outside the scope of the handler.

The jka-compr and epa handlers apply to files that are accessible
locally, so I don't think we can decide it before running the handler.


        Stefan