@samp{wget -O - http://foo > file}; @file{file} will be truncated
immediately, and @emph{all} downloaded content will be written there.
+For this reason, @samp{-N} (for timestamp-checking) is not supported
+in combination with @samp{-O}: since @var{file} is always newly
+created, it will always have a very new timestamp. A warning will be
+issued if this combination is used.
+
+Similarly, using @samp{-r} or @samp{-p} with @samp{-O} may not work as
+you expect: Wget won't just download the first file to @var{file} and
+then download the rest to their normal names: @emph{all} downloaded
+content will be placed in @var{file}. This was disabled in version
+1.11, but has been reinstated (with a warning) in 1.11.2, as there are
+some cases where this behavior can actually have some use.
+
Note that a combination with @samp{-k} is only permitted when
-downloading a single document, and combination with any of @samp{-r},
-@samp{-p}, or @samp{-N} is not allowed.
+downloading a single document, as in that case it will just convert
+all relative URIs to external ones; @samp{-k} makes no sense for
+multiple URIs when they're all being downloaded to a single file.
@cindex clobbering, file
@cindex downloading multiple times
same time. Neither option is available in Wget compiled without IPv6
support.
-@item --prefer-family=IPv4/IPv6/none
+@item --prefer-family=none/IPv4/IPv6
When given a choice of several addresses, connect to the addresses
-with specified address family first. IPv4 addresses are preferred by
-default.
+with specified address family first. The address order returned by
+DNS is used without change by default.
This avoids spurious errors and connect attempts when accessing hosts
that resolve to both IPv6 and IPv4 addresses from IPv4 networks. For
using the @samp{--ftp-user} and @samp{--ftp-password} options for
@sc{ftp} connections and the @samp{--http-user} and @samp{--http-password}
options for @sc{http} connections.
+
+@item --ask-password
+Prompt for a password for each connection established. Cannot be specified
+when @samp{--password} is being used, because they are mutually exclusive.
@end table
@node Directory Options
@section Directory Options
-@table @samp
+@table @samp
@item -nd
@itemx --no-directories
Do not create a hierarchy of directories when retrieving recursively.
@var{file} in the request body. The same as
@samp{--post-file=@var{file}}.
-@item prefer_family = IPv4/IPv6/none
+@item prefer_family = none/IPv4/IPv6
When given a choice of several addresses, connect to the addresses
-with specified address family first. IPv4 addresses are preferred by
-default. The same as @samp{--prefer-family}, which see for a detailed
-discussion of why this is useful.
+with specified address family first. The address order returned by
+DNS is used without change by default. The same as @samp{--prefer-family},
+which see for a detailed discussion of why this is useful.
@item private_key = @var{file}
Set the private key file to @var{file}. The same as