RE: Replacing ido with iswitchb results in not being able to get to "/c/" in Emacs

[Drew Adams]

> I noticed that it complained that "iswitchb" is obsolete, so I
> switched to "ido", which is apparently recommended to replace it.

Actually it is Icomplete mode that is intended to replace IswitchB mode.
`C-h N' (NEWS) shows this:

  ** Obsolete packages
  +++
  *** iswitchb.el; use icomplete-mode.

(And yes, the doc string for `iswitchb-mode' mentions `ido-mode' also.)

IMO, you *should* be able to nevertheless continue to use IswitchB as
before, if you like: deprecation should not immediately remove the
functionality from the product.

However, you cannot even get the package from the GNU package archive -
it was simply removed.  You can still find it, though - here, for example:
http://cvs.savannah.gnu.org/viewvc/*checkout*/emacs/emacs/lisp/iswitchb.el