bug#12576: 24.2.50; Shouldn't `find-file-use-dired' control completion candidates too?

["Drew Adams" <drew.adams@oracle.com>]

I might be missing something, and would be glad to learn, but shouldn't
`find-file' exclude directories from being completion candidates when
`find-file-use-dired' is nil?  Currently, we offer dirs as candidates,
and when you choose one raise an error.  That seems odd.

emacs -Q

M-x set-variable find-file-use-dired nil

C-x C-f  ; Choose a directory - error raised.

In GNU Emacs 24.2.50.1 (i386-mingw-nt5.1.2600)
 of 2012-10-02 on DANI-PC
Bzr revision: 110346 cyd@gnu.org-20121002152147-6a46skux2i4t0n2c
Windowing system distributor `Microsoft Corp.', version 5.1.2600
Configured using:
 `configure --with-gcc (4.7) --no-opt --enable-checking --cflags
 -I../../libs/libxpm-3.5.8/include -I../../libs/libxpm-3.5.8/src
 -I../../libs/libpng-1.4.10 -I../../libs/zlib-1.2.6
 -I../../libs/giflib-4.1.4-1/include -I../../libs/jpeg-6b-4/include
 -I../../libs/tiff-3.8.2-1/include
 -I../../libs/libxml2-2.7.8-w32-bin/include/libxml2
 -I../../libs/gnutls-3.0.16/include
 -I../../libs/libiconv-1.14-2-mingw32-dev/include'