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* files.el (file-remote-p): Fix docstring. (Bug#10319)

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Drew Adams 2011-12-21 19:33:38 +01:00 committed by Michael Albinus
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@ -1,3 +1,7 @@
2011-12-21 Drew Adams <drew.adams@oracle.com>
* files.el (file-remote-p): Fix docstring. (Bug#10319)
2011-12-21 Jérémy Compostella <jeremy.compostella@gmail.com>
* battery.el (battery-linux-sysfs): Add missing parameters from acpi.

47
lisp/files.el
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@ -917,24 +917,41 @@ See `load-file' for a different interface to `load'."
(defun file-remote-p (file &optional identification connected)
"Test whether FILE specifies a location on a remote system.
Returns nil or a string identifying the remote connection (ideally
a prefix of FILE). For example, the remote identification for filename
\"/user@host:/foo\" could be \"/user@host:\".
A file is considered \"remote\" if accessing it is likely to be slower or
less reliable than accessing local files.
Furthermore, relative file names do not work across remote connections.
A file is considered remote if accessing it is likely to
be slower or less reliable than accessing local files.
IDENTIFICATION specifies which part of the identification shall
be returned as string. IDENTIFICATION can be the symbol
`method', `user', `host' or `localname'; any other value is
handled like nil and means to return the complete identification
string.
`file-remote-p' never opens a new remote connection. It can
only reuse a connection that is already open.
If CONNECTED is non-nil, the function returns an identification only
if FILE is located on a remote system, and a connection is established
to that remote system.
Return nil or a string identifying the remote connection
\(ideally a prefix of FILE). Return nil if FILE is a relative
file name.
`file-remote-p' will never open a connection on its own."
When IDENTIFICATION is nil, the returned string is a complete
remote identifier: with components method, user, and host. The
components are those present in FILE, with defaults filled in for
any that are missing.
IDENTIFICATION can specify which part of the identification to
return. IDENTIFICATION can be the symbol `method', `user',
`host', or `localname'. Any other value is handled like nil and
means to return the complete identification. The string returned
for IDENTIFICATION `localname' can differ depending on whether
there is an existing connection.
If CONNECTED is non-nil, return an identification only if FILE is
located on a remote system and a connection is established to
that remote system.
Tip: You can use this expansion of remote identifier components
to derive a new remote file name from an existing one. For
example, if FILE is \"/sudo::/path/to/file\" then
\(concat \(file-remote-p FILE) \"/bin/sh\")
returns a remote file name for file \"/bin/sh\" that has the
same remote identifier as FILE but expanded; a name such as
\"/sudo:root@myhost:/bin/sh\"."
(let ((handler (find-file-name-handler file 'file-remote-p)))
(if handler
(funcall handler 'file-remote-p file identification connected)