bug#19394: 25.0.50; mpc does not handle MPD_HOST=socket

[Mark Oteiza <mvoteiza@udel.edu>]

Mark Oteiza <mvoteiza@udel.edu> writes:

> Eli Zaretskii <eliz@gnu.org> writes:
>
>>> From: Mark Oteiza <mvoteiza@udel.edu>
>>> Date: Sun, 02 Aug 2015 14:36:37 -0400
>>> 
>>> Here's a patch for handling the MPD_HOST being a socket.
>>
>> Thanks.
>>
>>> +                                             :remote (if (string-prefix-p "/" host)
>>> +                                                         host))
>>
>> This looks wrong to me, the proper test for a remote file name is
>> file-remote-p (if this is what you want to test here).
>
> Yeah you're right, I was abusing this wording for :remote
>
>   When specified for a client process, the FAMILY, HOST, and SERVICE
>    args are ignored.
>
> when I should have been using :family and :service together. This should
> be better:
>
>>From 83d7ef4cc27580248c6584d2f141afa50624c951 Mon Sep 17 00:00:00 2001
> From: Mark Oteiza <mvoteiza@udel.edu>
> Date: Sun, 2 Aug 2015 17:44:27 -0400
> Subject: [PATCH] mpc.el (mpc--proc-connect): support UNIX addresses
>  (Bug#19394)
>
> ---
>  lisp/mpc.el | 8 +++++++-
>  1 file changed, 7 insertions(+), 1 deletion(-)
>
> diff --git a/lisp/mpc.el b/lisp/mpc.el
> index 76c08db..396e067 100644
> --- a/lisp/mpc.el
> +++ b/lisp/mpc.el
> @@ -253,6 +253,7 @@ defaults to 6600 and HOST defaults to localhost."
>  
>  (defun mpc--proc-connect (host)
>    (let ((port 6600)
> +        local
>          pass)
>  
>      (when (string-match "\\`\\(?:\\(.*\\)@\\)?\\(.*?\\)\\(?::\\(.*\\)\\)?\\'"
> @@ -267,6 +268,8 @@ defaults to 6600 and HOST defaults to localhost."
>                  (if (string-match "[^[:digit:]]" v)
>                      (string-to-number v)
>                    v)))))
> +    (when (string-prefix-p "/" host)
> +      (setq local t))
>  
>      (mpc--debug "Connecting to %s:%s..." host port)
>      (with-current-buffer (get-buffer-create (format " *mpc-%s:%s*" host port))
> @@ -279,7 +282,10 @@ defaults to 6600 and HOST defaults to localhost."
>        (let* ((coding-system-for-read 'utf-8-unix)
>               (coding-system-for-write 'utf-8-unix)
>               (proc (condition-case err
> -                       (open-network-stream "MPC" (current-buffer) host port)
> +                       (make-network-process :name "MPC" :buffer (current-buffer)
> +                                             :host (unless local host)
> +                                             :service (if local host port)
> +                                             :family (if local 'local))
>                       (error (user-error (error-message-string err))))))
>          (when (processp mpc-proc)
>            ;; Inherit the properties of the previous connection.

I've been rolling with this patch for a while and have tested with mpd
configured for socket and for port.  Could this please be applied?