bug#7034: 24.0.50; Visit a remote file fails on windows

[Dani Moncayo <dmoncayo@gmail.com>]

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I'm reopening this bug report, because I'm experiencing it with the
latest Windows build of Emacs, on a Windows 7 system (real, not
virtualized).

0. emacs -Q.
1. C-x C-f /ftp@ftp.mozilla.org:/pub/mozilla.org/README

I don't understand why Emacs is unable to visit that file, given that:
 * My browser can show the contents of the file without problem.
 * I also can get the file using the standard windows ftp client (I
sign in with user="ftp" and pass="ftp").
 * My network connection has nothing special: An ethernet port
connected to a cable modem.

I've attached the contents of the ftp session buffer.

TIA.

In GNU Emacs 24.0.50.1 (i386-mingw-nt6.1.7600)
 of 2011-05-31 on 3249CTO
Windowing system distributor `Microsoft Corp.', version 6.1.7600
configured using `configure --with-gcc (4.5) --no-opt --cflags -Ic:/build/includ

-- 
Dani Moncayo

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Invalid help command foo.
open ftp.mozilla.org
Connected to ftp.zlb-ftp.sj.mozilla.com.
220-
220-   ftp.mozilla.org / archive.mozilla.org - files are in /pub/mozilla.org
220-
220-   Notice: This server is the only place to obtain nightly builds and needs to
220-   remain available to developers and testers. High bandwidth servers that
220-   contain the public release files are available at ftp://releases.mozilla.org/
220-   If you need to link to a public release, please link to the release server,
220-   not here. Thanks!
220-
220-   Attempts to download high traffic release files from this server will get a
220-   "550 Permission denied." response.
220 
user "ftp" Turtle Power!
331 Please specify the password.
230-
230-   ftp.mozilla.org / archive.mozilla.org - files are in /pub/mozilla.org
230-
230-   Notice: This server is the only place to obtain nightly builds and needs to
230-   remain available to developers and testers. High bandwidth servers that
230-   contain the public release files are available at ftp://releases.mozilla.org/
230-   If you need to link to a public release, please link to the release server,
230-   not here. Thanks!
230-
230-   Attempts to download high traffic release files from this server will get a
230-   "550 Permission denied." response.
230 Login successful.
hash
Hash mark printing On  ftp: (2048 bytes/hash mark) .
pwd
257 "/"
cd "/pub/mozilla.org/README/"
550 Failed to change directory.
cd "/pub/mozilla.org/README/"
550 Failed to change directory.
cd "/pub/mozilla.org/"
250 Directory successfully changed.
ls -al c:/Users/Dani/AppData/Local/Temp/ange-ftp4024Qjv
200 PORT command successful. Consider using PASV.
150 Here comes the directory listing.
#226 Directory send OK.
ftp: 2600 bytes received in Seconds Kbytes/sec.
ls -al c:/Users/Dani/AppData/Local/Temp/ange-ftp4024Qjv
0,002600,00200 PORT command successful. Consider using PASV.
cd "/pub/mozilla.org/README/"
150 Here comes the directory listing.
#226 Directory send OK.
ftp: 2600 bytes received in Seconds Kbytes/sec.
cd "/pub/mozilla.org/README/"
0,002600,00550 Failed to change directory.
cd "/pub/mozilla.org/"
550 Failed to change directory.
cd "/pub/mozilla.org/"
250 Directory successfully changed.
ls -al c:/Users/Dani/AppData/Local/Temp/ange-ftp4024P3E
250 Directory successfully changed.
cd "/pub/mozilla.org/README/"
200 PORT command successful. Consider using PASV.
150 Here comes the directory listing.
#226 Directory send OK.
ftp: 2600 bytes received in Seconds Kbytes/sec.
cd "/pub/mozilla.org/README/"
0,002600,00550 Failed to change directory.
cd "/pub/mozilla.org/README/"
550 Failed to change directory.
cd "/pub/mozilla.org/README/"
550 Failed to change directory.
cd "/pub/mozilla.org/"
550 Failed to change directory.
cd "/pub/mozilla.org/"
250 Directory successfully changed.
ls -al c:/Users/Dani/AppData/Local/Temp/ange-ftp40242VX
250 Directory successfully changed.
cd "/pub/mozilla.org/README/"
200 PORT command successful. Consider using PASV.
150 Here comes the directory listing.
#226 Directory send OK.
ftp: 2600 bytes received in Seconds Kbytes/sec.
cd "/pub/mozilla.org/README/"
0,002600,00550 Failed to change directory.
cd "/pub/mozilla.org/README/"
550 Failed to change directory.
cd "/pub/mozilla.org/README/"
550 Failed to change directory.
cd "/pub/"
550 Failed to change directory.
cd "/pub/"
250 Directory successfully changed.
ls -al c:/Users/Dani/AppData/Local/Temp/ange-ftp4024d0p
250 Directory successfully changed.
cd "/pub/mozilla.org/"
200 PORT command successful. Consider using PASV.
150 Here comes the directory listing.
#226 Directory send OK.
ftp: 2600 bytes received in Seconds Kbytes/sec.
cd "/pub/mozilla.org/"
0,002600,00250 Directory successfully changed.
250 Directory successfully changed.